HomeMy WebLinkAbout12-2, Attachment Hirschdale CCR 2012Visit Our Website
www.tdpud.org
Lead
If present, elevated levels of lead can
cause serious health problems, especially
for pregnant women and young children.
Infants and young children are typically
more vulnerable to lead in drinking water
than the general population. It is possible
that lead levels at your home may be high-
er than at the other homes in the communi-
ty as a result of materials used in your
home's plumbing. Lead in drinking water
is primarily from materials and compo-
nents associated with service lines and
home plumbing. Truckee Donner Public
Utility District is responsible for providing
high quality water, but cannot control the
variety of materials used in plumbing com-
ponents. When your water has been sitting
for several hours, you can minimize the
potential for lead exposure by flushing
your tap for 30 seconds to 2 minutes before
using water for drinking or cooking. If you
are concerned about lead in your water,
you may wish to have your water tested.
Information on lead in drinking water, test-
ing methods, and steps you can take to
minimize exposure is available from the
USEPA Safe Drinking Water Hotline (1-
800-426-4791) or at http://www.epa.gov/
safewater/lead.
HIRSCHDALE
WATER SYSTEM
i
it
1 1
l f
r ch
H-sonaa
y
No Cryptosporidium or Giardia
in District Water
You may have seen or heard news reports about Cryptosporidium and Gi-
ardia, microscopic organisms that can enter surface waters from run-off con-
taining animal wastes. If ingested, Cryptospridium and Giardia can cause diar-
rhea, fever and other gastro-intestinal symptoms.
Because Truckee Donner Public Utility District's water comes from deep
wells rather than surface water, it is almost impossible to have these contami-
nants in the District's water supply.
Radon
Radon is a radioactive gas that you cannot see, taste, or smell. It is found
throughout the U.S. Radon can move up through the ground and into a home
through cracks and holes in the foundation. Radon can build up to high levels
in all types of homes. Radon can also get into indoor air when released from
tap water from showering, washing dishes, and other household activities.
Compared to radon entering the home through soil, radon entering the home
through tap water will in most cases be a small source of radon in indoor air.
Radon is a known human carcinogen. Breathing air containing radon can lead
to lung cancer. Drinking water containing radon may also cause increased
risk of stomach cancer. If you are concerned about radon in your home, test
the air in your home. Testing is inexpensive and easy. You should pursue
radon removal for your home if the level of radon in your air is 4 picocuries
per liter of air (pCi/L) or higher. There are simple ways to fix a radon prob-
lem that are not too costly. For additional information, call your State radon
program (1-800-745-7236), the EPA Safe Drinking Water Hotline (1-800-426
-4791), or the National Safety Council Radon Hotline (1-800-SOS-RADON).
Este informe contiene informaci6n
muy importante sobre su agua
potable. Traduzcalo 6 hable con
alguien que to entienda bien.
Customer Views Are Welcome
If you are interested in participating in the
decision -making process of the Truckee Donner
Public Utility District, you are welcome to at-
tend Board meetings.
The Board of Directors meet at 6:00 PM on
the first and third Wednesday of each month in
the TDPUD Board room located at 11570 Don-
ner Pass Road, Truckee, California. Agendas
for upcoming meetings may be obtained on our
website at ww.tdpud.org or from the Deputy
District Clerk's office, (530) 582-3909.
For More Information
• About this report or the water treatment pro-
cess, contact Truckee Donner Public Utility
District's Senior Water Quality Tech, Paul
Rose at (530) 582-3926.
About group or class presentations, contact
the Truckee Donner Public Utility District at
(530) 587-3896.
About water conservation and efficiency, the
TDPUD has new water conservation pro-
grams that will help customers save water
and save money. Information can be found
on the TDPUD's website at www.tdpud.org
or contact TDPUD's Conservation Depart-
ment at (530) 582-3931.
Water Quality
Truckee Donner Public Utility District vigilantly safe-
guards its mountain groundwater supplies. We are able to
report that the District has met the California Department
of Public Health drinking water standards.
This brochure is a snapshot of the quality of water
provided to customers for the 2012 calendar year. Includ-
ed in this pamphlet are details about where your water
comes from, what it contains, and how it compares to
State and USEPA Standards.
Truckee Donner Public Utility District is committed to
providing you with the information about your water sup-
ply because customers who are well informed are the
District's best allies in supporting improvements that are
necessary to maintain the highest drinking water stand-
ards.
Some people may be more vulnerable to contaminants
in drinking water than the general population. Immuno-
compromised persons such as persons with cancer under-
going chemotherapy, people who have undergone organ
transplants, people with HIV/AIDS or other immune sys-
tem disorders, some elderly individuals, and infants can
be particularly at risk from infections. These people
should seek advice about drinking water from their health
care providers. USEPA/Centers for Disease Control
(CDC) guidelines on appropriate means to lessen the risk
of infection by Cryptosporidium and other microbiologi-
cal contaminants are available from the Safe Drinking
Water Hotline at 1-800-426-4791.
Where Does Our Water Come From?
The source of the drinking water served to our Hirschdale
customers comes from a well drawing from a deep aqui-
fer. We filter this water to remove iron, manganese, and
arsenic before delivering it to your tap. Additionally, each
month the system is sampled for microbial quality. Be-
cause of natural filtration, the groundwater aquifer is pro-
tected from surface water contamination, giving us a high
quality of drinking water.
Source Water Assessment
A source water assessment has been completed for the
well serving the Hirschdale area. The well is considered
most vulnerable to the following activities not associated
with any detected contaminants: septic systems, drinking
water treatment plants, and transportation corridors. A
copy of the complete assessment may be viewed at the
Truckee Donner Public Utility District located at 11570
Donner Pass Road, Truckee, CA or by calling Mark
Thomas at (530) 582-3957.
2012 Water Quality
Report
HIRSCHDALE
WATER SYSTEM
# 2910010
1 1 1 The data presented in this table is from the most recent monitoring done in compliance with
regulations. Some data may be more than a year old.
Primary contaminants (PDWS) MCL PHG (MCLG)
Hirschdale Water
Average
Range of Detection
Violation
Most Recent
Monitoring
Date
Major Origins in Drinking Water
Arsenic (ppb) 10 0.004
2.1
N/D - 8.1
NO
2012
Erosion of natural deposits
Barium (ppm) 1 2
0.11
0.11
NO
2011
Regulated Contaminants with Secondary MCLs (a) (SDWS)
Chloride (ppm)
500
500
8
8
NO
2011
Leaching from natural
deposits
Naturally -occurring organic
materials
Sulfate (ppm)
500
500
14
14
NO
2011
Total Dissolved Solids (ppb)
1000
1000
250
250
NO
2011
Color (ACU)
15
15
N/D
N/D
NO
2011
Specific Conductance (µS/cm)
1600
1600
300
300
NO
2011
Substances that form ions when in
water
Unregulated General Minerals
pH
6.5-8.5
6.5-8.5
8
8
NO
2011
Erosion of natural deposits
Potassium (ppm)
N/A
N/A
5.5
5.5
N/A
2011
Sodium (ppm)
N/A
N/A
29
29
N/A
2011
Total Alkalinity (ppm)
N/A
N/A
130
130
N/A
2011
Hardness as (CaCO3) (ppm)
N/A
N/A
89
89
N/A
2011
Calcium (ppm)
N/A
N/A
15
15
N/A
2011
Magnesium (ppm)
N/A
N/A
13
13
N/A
2011
Disinfection MRDL MRDLG
Chlorine (ppm)
4
4
0.71
0.4 - 1.03
NO
2012
Drinking water disinfectant added for treat-
ment
Disinfection Byproducts MCL PHG (MCLG)
Total Trihalomethanes (ppb)
80
N/A
22
22
NO
2012
By-product of drinking water
disinfection
Haloacetic Acids (ppb)
60
N/A
21
21
NO
2012
Radionuclides MCL MCLG
Radon (pCi/L)
N/A
N/A
570
570
N/A
2005
Erosion of natural deposits
Microbial Contaminants MCL
Total Coliform Bacteria
0
> Than 1 positive sample per month
NO
2012
Naturally present in the environment
Copper / Lead AL MCLG Hirschdale Water # of Sites # of Sites that Exceeded
90th percentile value Sampled Action Level
Copper (ppm)
1.3
0.17
0.054
5
NO
2012
Corrosion of household plumbing
system. Flushing prior to use
recommended
Lead (ppb)
15
2
N/D
5
NO
2012
Arsenic above 5 ppb up to and including 10 ppb: While your drinking water meets
the current USEPA standard for arsenic, it does contain low levels of arsenic. The arse-
nic standard balances the current understanding of Arsenic from drinking water. The
USEPA continues to research the health effects of low levels of arsenic, which is a min-
eral known to cause cancer in humans at high concentrations and is linked to other health
effects such as skin damage and circulatory problems.
GENERAL INFORMATION:
The sources of drinking water (both tap water and bottled water) 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,
radioactive material, and can pick up substances resulting from the presence of animals
or from human activity.
Contaminants that may be present in source water:
• Microbial contaminants, such as viruses and bacteria, that may come from sewage
treatment plants, septic systems, agricultural livestock operations and wildlife.
• Inorganic contaminants, such as salts and metals, that can occur naturally or result
from urban storm -water runoff, industrial or domestic wastewater discharges, oil and
gas production, mining or farming.
• Pesticides and herbicides, which may come from a variety of sources such as agri-
culture, urban Storm -water runoff and residential uses.
• Organic chemical contaminants, including synthetic and volatile organic chemi-
cals, that are byproducts of industrial processes and petroleum production, and can
also come from gas stations, urban storm -water runoff and septic systems.
• Radioactive contaminants, which can be naturally occurring or be the result of oil
and gas production and mining activities.
In order to ensure that tap water is safe to drink, the U.S. Environmental Protection
Agency (USEPA) and the State Department of Public Health (Department) prescribe
regulations that limit the amount of certain contaminants in water provided by public
water systems. Department 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 necessari-
ly indicate that water poses a health risk. More information about contaminants and po-
tential health effects can be obtained by calling the USEPA's Safe Drinking Water Hot-
line at 1-800-426-4791 or at http://water.epa.gov/drink/index.cfm.
TABLE DEFINITIONS:
Detected Compounds: The State allows us to monitor for some contaminants less than
once per year because the concentrations of these contaminants do not change fre-
quently. Some of our data, though representative, are more than one year old. Not
listed are the hundreds of other compounds for which we tested that were not detected.
Regulated Contaminants with Secondary MCLs (a) - There are no PHGs, MCLGs,
or mandatory standard health effects language for these constituents because secondary
MCLs are set on the basis of aesthetics.
Maximum Contaminant Level (MCL) - The highest level of a contaminant that is
allowed in drinking water. Primary MCLs are set as close to the PHGs (or MCLGs) as
is economically and technologically feasible. Secondary MCLs are set to protect the
odor, taste and appearance of drinking water.
Maximum Contaminant Level Goal (MCLG) - The level of a contaminant in drink-
ing water below which there is no known or expected risk to health. MCLGs are set by
the U.S. Environmental Protection Agency.
Public Health Goal (PHG) - The level of a contaminant in drinking water below
which there is no known or expected risk to health. PHGs are set by the California
Environmental Protection Agency.
Primary Drinking Water Standards (PDWS)- MCLs and MRDLs for contaminants
that affect health along with their monitoring and reporting requirements, and water
treatment requirements.
Maximum Residual Disinfectant Level (MRDL) - The level of a disinfectant added
for water treatment that may not be exceeded at the consumer's tap.
Maximum Residual Disinfectant Level Goal (MRDLG) - The level of a disinfectant
added to water treatment below which there is no known or expected risk to health.
MRDLGs are set by the U.S. Environmental Protection Agency.
Secondary Drinking Water Standards (SDWS): MCLs for contaminants that affect
taste, odor, or appearance of the drinking water. Contaminants with SDWSs do not
affect the health at the MCL levels.
Radiochemical Parameters —Compounds found in drinking water which emit radia-
tion.
Microbial Parameters —Disease -causing organisms that, at certain levels, may be
harmful. Additional information about Cryptosporidium and Giardia is supplied in this
report.
Unregulated Compounds Analyzed— Unregulated compounds that the Truckee
Donner Public Utility District has tested for. These compounds are not known to be
associated with adverse health effects.
TABLE KEY
ppm—Parts per million, or milligrams per liter (mg/L) pCi/L (Picocuries per Liter) - A measure of radioactivity.
ppb Parts per billion, or micrograms per liter (ug/L) > - Greater than
µS/cm—Micro Siemens per centimeter N/A —Not applicable
ACU (Apparent Color Unit) - A measure of color in drinking water. N/D—Not detectable at testing limit