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2003 Consumer Confidence Report of Water Quality |
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To
Our Water Customers, July,
2004 |
| The
City of Daly City is pleased to present to
you, our customers, the 2003 Consumer Confidence
Report (CCR). We want you to know about the
City’s water supply; where it comes from,
how it is handled to insure your health and
safety, upcoming changes to the system and
the results of ongoing water quality monitoring.
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Top
Quality Water Resource |
| Your
drinking water is top quality and undergoes
a rigorous monitoring program to comply with
prescribed regulations, as mandated by the
State Department of Health Services (DHS)
and EPA standards. The water delivered to
your home, business or school is safe and
of high quality. Only under rare circumstances
specifically involving persons with identified
health concerns, such as being on dialysis
or having significantly compromised immune
systems, is there a need for specially treated,
filtered or prepared water. There is more
technical information regarding our monitoring
and water quality results later in this report.
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| Contacts
for your Questions |
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If
you have any questions regarding your water
bill, water quality, or this report, please
use the following numbers to get answers to
your inquiries. |
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answer any questions concerning your bill,
starting or stopping service, contact Utility
Billing at:
(650) 991-8082
To report a leak or other problems (24 hours
a day), get water quality information or other
technical data, or to ask any water related
questions, please call the Department of Water
and Wastewater Resources at: (650)
991-8200
The main contact person for water quality
information issues, or for anything specifically
related to this report, is Patrick Sweetland,
Director of the Department of Water and Wastewater
Resources: (650) 991-8200
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| How
The Public Can Be Involved |
| Meetings
of the City Council of the City of Daly City
begin at 7:00 pm on the second and fourth
Monday of each month and are open to the public.
Meetings are held in the City Council Chamber
located on the second floor of the Daly City
Civic Center, 333-90th Street.
We welcome your comments and suggestions on
how to improve our water system or methods
to better preserve our resources. Contact
Patrick Sweetland of the Department of Water
and Wastewater Resources for information regarding
future public meetings, to voice concerns
regarding service or delivery of your water.
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New
Activities:
Chloramine Conversion
& Fluoridation
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Chloramine
Conversion
The City of Daly City successfully
converted the drinking water disinfectant
from chlorine to chloramine during the first
week of February 2004. Converting to chloramine
allows the City to provide water that meets
the stringent drinking water standards for
disinfection byproducts, specifically the
federal and state Disinfectant/Disinfection
Byproducts Rule (D/DBP Rule).
Chloramine, a combination of 5 parts chlorine
and 1 part ammonia, is a more stable disinfectant,
lasts longer in water, and produces lower
levels of disinfection byproducts called trihalomethanes,
suspected carcinogens. While the current standard
is a maximum trihalomethane level of 80 parts
per billion, Daly City water currently tests
at 70.5 parts per billion. By switching from
chlorine to chloramine, the trihalomethane
level will decrease even further. In the first
quarter of 2004, the trihalomethane level
was 28.8 parts per billion, a decrease of
over 50%.
According to the EPA, approximately one-third
of all water suppliers in the United States
are already using chloramine as a drinking
water disinfectant. Local agencies include
the East Bay Municipal Utility District, Alameda
County Water District, Santa Clara Valley
Water District, Contra Costa Water District
and Marin Municipal Water District. The City
of Denver, Colorado, has chloraminated their
water supply for 90 years. Everything known
about chloramine points to the fact that it
enhances public safety in the drinking water
supply.
Just as they had with chlorine, three groups
need to take precautions with chloramine.
Those groups include kidney dialysis patients,
businesses requiring highly processed water,
and owners of fish, amphibians and reptiles
that live in water. Owners of fish, amphibians
and reptiles can utilize special treatment
methods, either drops or tablets, or a biological
filter combined with a chemical agent to neutralize
chloramine. However, these same precautions
need not be taken for any other household
use of drinking water. Chloraminated water
is safe for people and animals to drink, cook
with, bathe in, and for all other general
uses. Again, the three groups mentioned above
will not be doing anything different by removing
the drinking water disinfectant prior to use;
they will now just use a different method
of removal.
Fluoridation
The San Francisco Public
Utilities Commission (SFPUC) has fluoridated
treated drinking water for more than 50
years. Depending on your location in Daly
City, you may currently receive the optimum
level of fluoride content at 1.0 mg/L (parts
per million), while other areas may be receiving
water with fluoride levels as low as 0.3
mg/L. Beginning in June 2004, Daly City
will fluoridate the blended water supply
throughout the entire community, in keeping
with optimum standards established by the
California State Department of Health Services
(DHS).
Assembly Bill (AB) 733 authorizes the DHS
to require large water systems to fluoridate
the public water supply once funding became
available. The City of Daly City has entered
into an agreement with the California Dental
Association Research Fund, Inc. to reimburse
the City for design, purchase and installation
of equipment and for operation and maintenance
expenses to augment fluoridation throughout
our community.
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| Where
Your Water Comes From
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The
Daly City water system is supplied about equally
from two sources, the San Francisco Water Department
and local Daly City wells. San Francisco is
supplied exclusively by their surface water
system which is mostly reliant on the Hetch
Hetchy Watershed, and to a lesser degree local
reservoirs.
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| Hetch
Hetchy Watershed |
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The Hetch
Hetchy watershed is a 459 square mile area
located in Yosemite National Park at the headwaters
of the Tuolumne River. It provides approximately
80 percent of the San Francisco Public Utilities
Commission (SFPUC) supply.
The Hetch Hetchy system captures water inflows
from the watershed in the Hetch Hetchy Reservoir.
This reservoir, the primary source for the
system, is filled by spring snowmelt, runoff
and the Tuolumne River. Water in the Hetch
Hetchy Reservoir is treated but not filtered
because it is of such high quality.
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| Alameda
and Peninsula Watersheds |
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Alameda and Peninsula watersheds provide the
remaining 20 percent of the SFPUC water system.
The Alameda watershed is located in the East
Bay, and represents about ten percent of the
total water supply, with water captured and
stored in two reservoirs: Calaveras and San
Antonio.
The Peninsula watershed, representing the
remaining ten percent of the SFPUC supply,
captures runoff in four reservoirs, Crystal
Springs, San Andreas and the smaller Pilarcitos
and Stone Dam reservoirs.
The six reservoirs in the Alameda and Peninsula
watersheds capture rain, local runoff and
some also store Hetch Hetchy water for use
by the SFPUC.
Water from the Hetch Hetchy Reservoir that
is stored locally is treated and filtered,
as is any local water source.
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| Nitrate |
| Nitrate
in drinking water at levels above 45 mg/L
is a health risk for infants of less than
six months of age. High nitrate levels in
drinking water can interfere with the capacity
of an infant's blood to carry oxygen, resulting
in serious illness; symptoms include shortness
of breath and blueness of the skin. High nitrate
levels may also affect the ability of the
blood to carry oxygen in other individuals,
such as pregnant women and those with certain
specific enzyme deficiencies. Nitrate levels
may rise quickly for short periods of time
because of rainfall or agricultural activity.
If you are caring for an infant, or you are
pregnant, you should seek advice from your
health care provider.
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| Weekly
Water Sampling by Certified City Water Operators
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Daly
City maintains 35 sampling sites located
throughout the community that are tested
weekly for microbiological contaminants.
Tests are run by the City’s contract
laboratory, Sequoia Laboratory in Morgan
Hill, for maximum contaminant levels
of certain types of bacteria.
Coliforms
Coliforms are bacteria that are naturally
present in the environment and are
used as an indicator that other, potentially
harmful, bacteria may be present.
In 2003, certified Water Operators
collected 1,410 samples of which there
were 13 instances of a positive test
for coliform that equates to just
0.9 percent of all samples taken.
Upon re-sampling of the locations,
all tests came back negative for coliform,
and on no occasion did a test detect
the presence of fecal coliform or
E. Coli.
Lead and Copper
Lead in amounts in excess of established
action levels in drinking water can
cause delayed physical and/or mental
development in infants and attention
span and learning deficits in children.
In adults it can cause kidney problems
and possible high blood pressure.
Because of these concerns the EPA
mandated in 1993 that lead and copper
monitoring be conducted by all water
systems. Daly City completed the required
monitoring and corrosion study in
1994. The results of the study were
well under any action levels and met
all quality standards. Due to these
favorable results, Daly City was reduced
to triennial monitoring (every three
years).
In 1998, under advisement from the
EPA, DHS required local water systems
to complete their studies. A joint
effort was organized by the SFPUC
for collection and analysis by the
member agencies.
Since Daly City had previously conducted
the study, an agreement was reached
with DHS to do a special water quality
study to determine the aggressiveness
(corrosivity) of our well water and
determine ways to meet the requirements
for corrosion control in our water
system.
The study was performed in September
1999, and the results of the second
Daly City study showed results were
again under any action levels and
met all quality standards.
In December 2001, lead and copper
samples were collected and this third
Daly City study showed results remained
under any action levels. The results
of the second and third Daly City
studies indicate that the well water
blend with Hetch Hetchy supply provided
a buffering effect, which lowered
the corrosivity of the water. The
next round of testing will take place
in August 2004.
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| Microbiological
Information |
Monitoring
for bacteriological constituents in
the distribution system is required
to determine the presence of microbiological
contaminants such as coliforms, fecal
coliforms, and E. Coli.
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| Minimum
number of monthly samples |
100 |
| Maximum
number of positive samples allowed (MCL) |
5% |
| Yearly
number of samples taken |
1,410 |
| Highest
monthly number of positive coliform
samples (December 2003) |
10 |
| Total
number of positive fecal coliform or
E. Coli samples |
0 |
In December 2003, ten out of 155 samples
(6.4%) tested positive for coliform.
All thirty re-samples came back negative;
no fecal or E. Coli was detected.
There was a public hearing on these
test result exceedances on June 14,
2004. Copies of the Exceedance Report
are available by calling the Department
of Water and Wastewater Resources
at (650) 991-8200.
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| How
Drinking Water Sources Become Polluted |
The
sources of drinking water (both tap and bottled)
include rivers, lakes, streams, ponds, reservoirs,
springs and wells. As water travels over the
surface of the land or through the ground,
it dissolves naturally occurring minerals
and in some cases even radioactive material.
Surface waters in particular can be susceptible
to substances resulting from the presence
of animals or human activity. Contaminants
that may be present in source waters include:
Microbial
Contaminants such as viruses and
bacteria that may come from septic systems,
agricultural livestock operations and wildlife.
Inorganic
Contaminants such as salts and
minerals which can be naturally occurring
or result from urban stormwater runoff,
industrial or domestic wastewater discharges,
oil and gas production, mining or farming.
Organic
Chemical Contaminants including
synthetic and volatile organics which are
by-products of industrial processes and
petroleum production and can also come from
septic systems, urban stormwater runoff,
and agricultural chemicals such as chemical
fertilizers and gas stations.
MTBE,
a gasoline additive, has become a recent
water quality concern. This organic contaminant
has rapidly been made a primary contaminant
by DHS and is regularly monitored. All test
results for MTBE in the City's wells and
distribution system have been rated "non-detect".
Radioactive
Contaminants which can be naturally
occurring, or the result of oil and gas
production and mining activities.
Pesticides
and Herbicides may come from a
variety of sources such as agriculture,
urban stormwater runoff and residential
uses.
Unregulated
Contaminant Monitoring helps the
U.S. EPA and the State Department of Health
Services (DHS) to determine where certain
contaminants occur and whether the contaminants
need to be regulated. During 2000, the SFPUC
monitored for twelve unregulated contaminants
including MTBE, perchlorate, herbicides,
and pesticides. These contaminants were
not detected in any of Daly City's or SFPUC’s
supplies.
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How
Do We Know Our Water is Safe? |
In
order to insure that tap water is safe to
drink, the U.S. EPA and the State Department
of Health Services (DHS) prescribe regulations,
which limit the amount of certain contaminants
in water provided by public water systems.
DHS regulations also establish limits for
contaminants in bottled water that must provide
the same protection for public health.
Drinking water, including bottled water, may
reasonably be expected to contain at least
small amounts of some contaminants. The presence
of contaminants does not necessarily indicate
that water poses a health risk.
| For
more information about contaminants
and potential health effects, call
the U.S. EPA's Safe Drinking Water
Hotline at
1-800-426-4791. |
Some
people may be more vulnerable to contaminants
in drinking water than the general population.
Immuno-compromised persons, such as persons
with cancer undergoing chemotherapy, persons
who have undergone organ transplants, people
with HIV/AIDS or other immune system disorders,
some elderly, and infants can be particularly
at risk from infections. These people should
seek advice about drinking water from their
health care providers. EPA/Centers for Disease
Control guidelines on appropriate means to
lessen the risk of infection by Cryptosporidium
and other microbial contaminants are available
from the Safe Drinking Water Hotline (800-426-4791)
or on the U.S. EPA’s website www.epa.gov/safewater/hfacts.html.
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New regulations
required that in 2002 Water Operators not
only needed a water treatment certificate
but also a distribution certificate. As of
December 2001, Daly City received interim
Distribution certification for all of our
Water Operators good until 2007. After this
date, the Operators must take a test to receive
a permanent Distribution certificate. The
increased regulations also include that to
maintain certification, employees must complete
16 to 24 contact hours of education during
a span of two years.
Daly City has always taken pride in the technical
knowledge of the water system operators and
water distribution system crews and, with
the increased regulations, staff will gain
a greater educational advantage to better
serve you, the customer.
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| Important
Definition for Understanding This Water Quality
Report |
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Public Health Goal
(PHG): The level of a contaminant
in drinking water for which there is no known
or expected associated health risk. PHG's
are non-enforceable targets set by the California
Environmental Protection Agency (Cal EPA).
Maximum
Contaminant Level Goal (MCLG): The
level of a contaminant in drinking water for
which there is no known or expected health
risk. MCLG's are set by the U.S. Environmental
Protection Agency (U.S. EPA).
Maximum
Contaminant Level (MCL): The highest
level of a contaminant that is allowed in
drinking water. Primary MCL's are set as close
to the PHG's and MCLG's as is economically
and technically feasible. Secondary MCL's
are set to protect odor, taste and appearance
of drinking water.
Primary
Drinking Water Standard: MCL's for
contaminants that affect health along with
their monitoring and reporting requirements
and water treatment requirements.
Variances
and Exemptions: State or EPA permission
not to meet an MCL or a treatment technique
under certain conditions. Daly City and the
SFPUC have no variance or exemption for MCL’s.
Treatment
Technique: A required process intended
to reduce the level of a contaminant in drinking
water.
Regulatory
Action Level: The concentration of
a contaminant which, if exceeded, triggers
treatment or other requirements which a water
system must follow.
Waiver:
Permission from the State Department of Health
Services (DHS) to decrease the frequency for
a particular contaminant. This decision is
based on previous monitoring indicating a
firm belief that the contaminant does not
exist in the system. Waivers are for defined
periods of time and require an application
for extension.
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| TTHM
& HAA5 |
Trihalomethane
(TTHM) and Haloacetic acids (HAA5) are naturally
occurring by-products of the disinfection
process.
As part of the new regulation governing disinfection
byproducts, the U.S. Environmental Protection
Agency (U.S. EPA) has developed a new drinking
water standard for a group of five haloacetic
acids (HAA5) and lowered the current standard
for a group of four trihalomethanes (TTHM).
Water systems were required to meet these
new standards starting in January 2002. Currently,
while operating under optimum conditions,
the San Francisco Regional Water Systems (SFRWS),
the system from which Daly City purchases
roughly half of its water supply, could not
meet the new standard on a consistent basis.
To address this, the San Francisco Public
Utilities Commission (SFPUC), which operates
the SFRWS, embarked on a project to build
new chloramination facilities. Unfortunately,
a project of this size takes several years
to complete, and the facilities became operational
in February 2004. Under the new regulation,
EPA allows for a two-year extension to comply
with the new standard if capital improvements
are necessary. Daly City applied for and received
a two-year extension, although Daly City was
still required to meet all monitoring requirements
and notify the public if the state standard
for TTHM was exceeded. Daly City has been
below the new standard of 80 ppb (70.5 ppb)
for TTHM.
This disinfection conversion resulted in a
significant decrease in the disinfection by-products
in the first quarter of 2004, and assures
a safe and clean water supply for the future.
An operational consideration associated with
the use of chloramination is to avoid stagnant
water within the system. Chloramination retains
a modal contact time of up to 28 days. Stagnant
water increases the possibility of taste and
odor complaints associated with nitrification.
Part of the City’s response to the
chloramine conversion involved a citywide
flushing program completed in Fall 2003. The
flushing program will become an annual program
to clear out naturally occurring sediment
from water mains. Crews flush the system by
exercising fire hydrants throughout local
neighborhoods. Residents will receive advanced
flyers announcing when flushing will occur
in their area. In addition to clearing water
lines, the flushing program enables staff
to better assess the condition of water valves
in the system and fire flows throughout the
community.
To better assure water circulation, operational
parameters on filling and draining reservoirs
have been modified. A major capital improvement
was completed at Reservoir 5B on Margate Court
to improve circulation within this 10.3 million
gallon storage facility. Crews will also be
installing blow offs along dead-end mains
to improve circulation and water quality.
Finally, the City has cleaned all of its reservoirs
and has instituted an annual cleaning program.
Source Protection is the
primary barrier to water pollution. A contaminant
that does not get into the water source does
not need to be removed. SFPUC maintains a
comprehensive watershed control and management
program to protect source water. The water
from Hetch Hetchy Reservoir in Yosemite National
Park is so well protected that the Hetch Hetchy
water supply is one of only six major water
supplies in the country that is exempt from
filtration. SFPUC controls activities on the
watershed lands around their East Bay reservoirs,
limiting activities to those compatible with
maximum protection of the water quality.
Daly City, through proper design, construction,
operation, maintenance and source control
monitoring, achieves the same high level of
source protection at the five active wells.
The quality of the water supplied by local
wells is high enough so as to not require
further treatment other than disinfection
for your protection. The City is committed
to providing the highest quality, safe water
from its system to our customers.
Water
Treatment is the next protective
barrier. Water from the remote Hetch Hetchy
reservoir and our wells is unfiltered because
it meets all state and federal requirements
without filtration. Water from the other
Bay Area watersheds near populated areas
is filtered to meet standards for clarity.
All of Daly City’s water is disinfected
in order to retain distribution system residuals
that meet state and federal quality standards.
Effective
Operation & Maintenance of
the distribution system assures that the
water maintains its quality as it travels
through the system to your tap. Minimal
chlorine residual is maintained in the distribution
system to prevent any regrowth of organisms
during storage and transmission of the water
as it travels to you. Active flushing of
water mains and rotation of stored water
supplies also keeps the water fresh and
limits growth of organisms.
Daly City conducts continuous water quality
monitoring and testing to assure your drinking
water is safe and healthy. Daly City, working
with the San Mateo County Health Dept.,
maintains an active cross-connection control
program to prevent the intrusion of potentially
harmful materials into the drinking water
system. Cross-connection control is done
by isolating hazards (boilers, cooling towers,
fire sprinklers, etc.) from the drinking
water supply by requiring and overseeing
the installation of approved backflow prevention
devices, which are annually inspected and
certified by trained staff to insure their
continued effectiveness.
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| Arsenic |
| New regulations
for reporting arsenic levels have been established
at less than 10 ug/l. Staff has completed preliminary
testing of its groundwater at five local wells.
Current testing standards detect arsenic at 1
ug/l, and the JeffersonWell tested at 1.7 ug/l,
while all other wells tested non-detect. While
results are below the standard, Daly City will
provide an informational statement if for any
reason sampling exceeds 5 ug/l (one-half of the
new standard) as this testing program is implemented.
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Other
Health Related Information  |
Cryptosporidium
& Giardia
Cryptosporidium,
a parasitic microbe found in most surface
water supplies, can pose a potential health
threat. If swallowed, it may produce cryptosporidiosis,
with symptoms of diarrhea, stomach cramps,
upset stomach, and slight fever. Some people
are more vulnerable to cryptosporidium than
others and should seek advice about types
of drinking water from their health care providers.
The SFPUC tests
for cryptosporidium in both source and treated
water supplies at least quarterly. The SFPUC
occasionally (about 19 percent of the time)
detects low levels of cryptosporidium in the
Hetch Hetchy, East Bay, and San Francisco
Peninsula source (untreated) waters at an
overall average level of 37 cryptosporidium/100
liters of water.
Giardia,
a parasitic microbe found in most surface
water supplies, can pose a potential health
threat. If swallowed, it can produce the same
symptoms as does cryptosporidium.
The SFPUC tests
for giardia in both source and treated water
at least quarterly. The SFPUC occasionally
(about 23 percent of the time) detects low
levels of giardia in the Hetch Hetchy, East
Bay, and San Francisco Peninsula source (untreated)
waters at an overall average level of 12 giardia/100
liters of water.
Drinking water,
including bottled water, may reasonably be
expected to contain at least minute amounts
of some contaminants including cryptosporidium
and giardia. The presence of small amounts
of contaminants does not necessarily indicate
that water poses a health risk. More information
about contaminants and potential health effects
can be obtained by calling the Environmental
Protection Agency’s Safe Drinking Water Hotline
at (800) 426-4791.
Please
note that cryptosporidium and giardia are
associated with surface water supplies and
are not commonly detected in groundwater.
Daly City's wells in previous years have never
had a detected level of either of these microbes
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Daly
City Completes Drinking Water Source Assessment
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An
assessment of local municipal groundwater production
wells that provide approximately one-half of
the drinking water source for the City of Daly
City was completed in March 2003. The work was
performed in accordance with regulations established
under California’s Drinking Water Source Assessment
and Protection Program administered by the State
Department of Health Services (DHS).
Four of Daly City’s five
municipal production wells assessed (‘A’ Street,
Vale, Jefferson and Westlake) were noted as
being highly protected from potential pathways
of contamination. Well #4 was noted as being
moderately protected.
The
City’s municipal wells are considered most
vulnerable to automotive related activities
(gasoline stations, repair facilities), highways,
roadways, sewer lines and railroads (BART)
that result from the commercial and urbanized
character of the overlaying land in the community.
While the source assessment results are positive,
they underscore the importance of ongoing
monitoring and remedial activities now taking
place to ensure the water quality of this
local resource is preserved for potable purposes.
A copy
of the complete assessment is available from
the DHS Drinking Water Field Operations Branch,
2151 Berkeley Way, Room 458, Berkeley, CA
94704-1011. You may also request a summary
of the assessment be sent to you by contacting
either DHS District Engineer Eric Lacy at
(510) 540-2413, or Daly City’s Director of
Water and Wastewater Resources Patrick Sweetland
at (650) 991-8200.
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Daly
City's Wells (Groundwater) |
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The SFPUC water supply is contained in surface
water reservoirs. The term “surface water” refers
to water that is collected at ground level.
Wells comprise what is termed "groundwater",
or water that is stored below the earth's surface.
About half of the water served by the Daly City
Water System is from local wells. There were
five wells in active service during 2003.
During the year 2000, Daly City began a source
water assessment of its local groundwater sources
that was completed in 2003. Groundwater in many
ways is a much more protected source than surface
water. We draw water from an average depth of
300 feet below ground from a large aquifer known
as the Westside Basin that serves a large portion
of the northern San Mateo Peninsula and extends
north to Golden Gate Park in San Francisco.
Because of its protected environment and the
consistency of our monitoring results, our well
water is only required to have a disinfectant
added to it prior to being served in our system.
The disinfectant used in 2003 was chlorine.
In February 2004, the disinfectant was converted
to chloramine (five parts sodium hypochlorite
and one part aqueous ammonia). Sodium hypochlorite,
a concentrated liquid bleach solution, is much
safer to store and use than the pressurized
containers of pure chlorine which were used
for many years. This type of disinfectant is
much safer for you and the City's staff, who
operate and maintain the system. It should be
noted that the City's wells are checked regularly
for bacteriological levels, and the nonchlorinated/untreated
well water is consistently determined to have
a rating of "non-detect" for any coliform
organisms. Daly City well water is blended with
San Francisco water and then distributed throughout
the community.
Results from August 2003 nitrate testing showed
detected amounts of nitrate in excess of the
MCL of 45 mg/L (ppm) at Wells #4, A Street and
Westlake, but the blended average in the distribution
system was 5.4 mg/L. Nitrate is one of the major
anions in natural water, but concentrations
can be greatly elevated due to leaching of nitrogen
from fertilizers.
While there are no significant health effects
of nitrate levels in your tap water due to blending,
the following information statement is required
because of the elevated findings in the well
water and is not an indicator or statement of
the quality of water distributed to you.
Please refer to Page 3 for additional information
on nitrates
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| Conjunctive
Use |
| Beginning
in October 2002, surface water from the SFPUC
system was substituted for ground-water pumping
in the Westside Basin through an in-lieu recharge
agreement as part of a conjunctive use demonstration
project. The demonstration project was introduced
to partially assess the feasibility of a permanent
program, as tentatively outlined in those agreements,
which would: 1) increase ground-water levels
in the Westside Basin, 2) reduce the potential
for seawater intrusion, 3) develop increased
SFPUC system yield from the overall surface
and ground-water system, and 4) potentially
improve conditions at Lake Merced. SFPUC surface
water is provided to Daly City at a reduced
rate during conjunctive use.
The conjunctive use project, the first phase
of which concluded in November 2003, took advantage
of the availability of SFPUC system water to
increase water deliveries to municipal pumpers
in the basin: Daly City, San Bruno, and California
Water Service Company (Cal Water). This action
provided the opportunity to observe the response
of the ground-water basin to the in-lieu recharge
that takes place as a result of the associated
reduction in ground-water pumping by those entities.
The second phase of conjunctive use started
in March 2004.
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Energy
Star Clothes Washer Rebate Program |
The
City of Daly City is offering a rebate of $50-$150
to residents who purchase and install an Energy
Star clothes washer. Most major appliance brands
offer models that qualify for the rebate.
High-efficiency washers with the Energy Star
label use 38% less water and 56% less energy
than standard-efficiency models. In addition,
the super-efficient washers extract more moisture
from clothes, thereby reducing the time and
energy used for drying. The increased efficiency
translates into 13,500 to 36,000 gallons of
water saved per machine per year. Tests have
shown that Energy Star washers get clothes cleaner,
rinse more thoroughly, treat clothes more gently,
and use less detergent than other washers.
Additional information, including a list of
qualified washers and rebate applications, is
available from your local appliance retailer
selling Energy Star washers or from Daly City's
Ward Donnelly at (650) 991-8208.
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If
English is Not Your Primary Language |
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This
report contains important information
regarding your health and drinking water.
Call the Daly City Water and Wastewater
Resources Dept. (650-991-8200) should
you require assistance in Chinese, Spanish
or Tagalog. |
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Este
reporte contiene información muy important
de su salud y el agua que toma. Llamea Daly
City Water and Wastewater Resources Department
a (650) 991-8200 si necesita asistencia en Español. |
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Ang
ulat na ito ay naglalaman ng mahalagang impormasyon
tungkol sa inyong kalusugan at sa inumin ninyong
tubig. Mangyari po lamang na tawagan ang Daly
City Water and Wastewater Resources Department
sa numero (650-991-8200) kung kinakailangan
ninyo ng tulong o interpretasyon sa wikang Tagalog.
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