HomeMy WebLinkAbout12-1, Attachment Main System 2012 CCRTRUCKEE DONNER
Public Utility District
Truckee Donner Public Utility District
11570 Donner Pass Road
Truckee, CA 96161
Primary Business Address
Your Address Line 2
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Water Quality
#2910003
Truckee Donner Public Utility District (TDPUD) vigilantly safeguards its mountain groundwater supplies
Last year, your tap water met all EPA and State drinking water health standards. This brochure is a snapshot of the quality of water
provided to customers for the 2012 calendar year. Included in this pamphlet are details about where your water comes from, what it con-
tains, and how it compares to State and USEPA Standards.
TDPUD is committed to providing you with the information about your water supply because customers who are well informed are the
District's best allies in supporting improvements that are necessary to maintain the highest drinking water standards.
For More Information
• About this report or the water treatment process, contact Truckee Donner Public Utility District's Senior Water Quality Tech, Paul
Rose at (530) 582-3926.
• About a group or class presentation, contact the Truckee Donner Public Utility District at (530) 587-3896.
• About water conservation and efficiency, the TDPUD has new water conservation programs that will help customers save water and
save money. Information can be found on the TDPUD's website at www.tdpud.org or by calling (530) 582-3931.
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
attend 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 Donner Pass Road, Truckee, California. Agendas for upcoming meetings may be obtained on our website at
www.tdpud.org or from the Deputy District Clerk's office, (530) 582-3909.
Where Does Our Water Come
From?
Drinking water served to Truckee
Donner Public Utility District custom-
ers in the Truckee system is ground-
water from 12 deep wells.
Each week the system is sampled
for microbial quality. Because of nat-
ural filtration, the groundwater aquifer
is protected from surface contamina-
tion. This gives us high quality water.
Source Water
Assessment
A source water assessment was pre-
pared in 2002 for the wells serving the
Truckee area. The wells are consid-
ered most vulnerable to the following
activities not associated with any de-
tected contaminants: sewer collection
systems, utility stations, railroads, and
herbicide use. A copy of the complete
assessment may be viewed at the
Truckee Donner Public Utility District
office located at 11570 Donner Pass
Road, Truckee, CA or by calling Mark
Thomas at (530) 582-3957.
Some people may be more vulner-
able to contaminants in drinking water
than the general population. Immuno-
compromised persons such as per-
sons with cancer undergoing chemo-
therapy, people who have undergone
organ transplants, people with HIV/
AIDS or other immune system disor-
ders, some elderly, 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 microbial contaminants are
available from the Safe Drinking Wa-
ter Hotline at 1-800-426-4791.
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. More information about contami-
nants and potential health effects can
be obtained by calling the USEPA's
Safe Drinking Water Hotline at 1-800-
426-4791 or at http://water.epa.gov/
drink/index.cfm.
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 can-
cer. 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 high-
er. There are simple ways to fix a radon problem that are not too costly. For ad-
ditional 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).
Lead
If present, elevated levels of lead can cause serious health problems, especially
for pregnant women and young children. Lead in drinking water is primarily from
materials and components associated with service lines and home plumbing.
Truckee Donner Public Utility District is responsible for providing high quality wa-
ter, but cannot control the variety of materials used in plumbing components.
When your water has been sitting for several hours, you can minimize the poten-
tial for lead exposure by flushing your tap for 30 seconds to 2 minutes before us-
ing 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,
testing methods, and steps you can take to minimize exposure is available from
the Safe Drinking Water Hotline or at http://www.epa.gov/safewater/lead.
No Cryptosporidium or Giardia in District Water
You may have seen or heard news reports about Cryptosporidium and Giardia,
microscopic organisms that can enter surface waters from run-off containing ani-
mal wastes. If ingested, Cryptosporidium and Giardia can cause diarrhea, fever
and other gastro-intestinal symptoms. Because the Truckee Donner Public Utility
District's water comes from deep wells rather than surface water, it is almost im-
possible to have these contaminants in the District's water supply.
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 include:
• 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 be naturally -occurring or result
from urban stormwater runoff, industrial or domestic wastewater discharges, oil and gas pro-
duction, mining, or farming.
• Pesticides and herbicides, that may come from a variety of sources such as agricultural, ur-
ban storm -water runoff and residential uses.
• Organic chemical contaminants, including synthetic and volatile organic chemicals, that are
by-products of industrial processes and petroleum production, and can also come from gas
stations, urban
storm -water runoff, agricultural application, and septic systems.
• Radioactive contaminants, that can be naturally -occurring or be the result of oil and gas pro-
duction 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.
DETECTED
COMPOUNDS
Arsenic above 5 ppb up to 10 ppb: While your drinking water meets the current Federal and
State standards for arsenic, it does contain low levels of arsenic. The standard balances the cur -
The data presented in this table is from the most recent monitoring done in compliance with regulations. Some data is more than a year old. rent understanding of arsenic's possible health effects against the costs of removing arsenic from
Primary Contaminants
(PDWS)
MCL
PHG
(MCLG)
Airport
Well
Northside
Well
Martis
Valley
Well
Southside
Well # 2
"A"
Well
Glenshire
Dr Well
Sanders
Well
Prosser
Annex
Well
Prosser
Heights
Well
Well
20
Prosser
Village
Well
Old Violation
Greenwood
Well
Year Sampled
2011
2012
2011
2010
2009
2012
2012
2011
2010
2012
2012
2012
Arsenic (ppb)
10
0.004
9.4
2.7
8
N/D
N/D
4.7 ,
8.9
N/D
N/D
N/D
N/D
N/D
NO
Year Sampled
2008
2005
2011
2007
2006
2011
2009
2008
2007
2006
2010
2012
Fluoride (ppm)
2
1
N/D
0.11
N/D
N/D
N/D
N/D
N/D
0.05
N/D
N/D
0.11
N/D
NO
Year Sampled
2012
2012
2012
2012
2012
2012
2012
2012
2012
2012
2012
2012
Nitrate (asN%) (ppm)
45
45
N/D
N/D
N/D
4.1
N/D
N/D
N/D
N/D
N/D
N/D
1 N/D
N/D
NO
Radionuclides
Year Sampled
2004
2004
Radon (pCi/L)
N/A
N/A
N/T
N/T
N/T
N/T
N/T
N/T
N/T
N/T
N/T
N/T
560
530
N/A
Regulated Contaminants with Secondary MCLs (a) (SDWS)
Year Sampled
2008
2005
2011
2007
2006
2011
2009
2008
2007
2006
2010
2012
Color (ACU)
15
15
N/D
N/D
N/D
N/D
N/D
N/D
N/D
N/D
3
N/D
5
1
NO
Odor
3
3
2
1
N/D
1
1
N/D
1
1
1
1
N/D
1
NO
Chloride (ppm)
500
500
5.5
17
7.1
5.7
N/D
12
53
N/D
N/D
N/D
6.4
3.5
NO
Copper (ppm)
1
1
N/D
N/D
.087
N/D
N/D
N/D
N/D
N/D
N/D
N/D
N/D
N/D
NO
Total Dissolved Solids (ppm)
1000
1000
126
170
120
112
68
140
230
112
110
110
120
93
NO
Sulfate (ppm)
500
500
4.1
8.9
3.6
1.3
N/D
6.7
16
N/D
N/D
N/D
1.4
1.9
NO
Specific Conductance
(PS/Cm)
1600
1600
187
241
160
160
109
200
360
166
166
166
180
167
NO
pH
N/A
N/A
8.1
8.3
8.1
7.1
7.4
8.3
8
8.1
8.3
8.1
8.2
8
N/A
Unregulated General Minerals
Year Sampled
2008
2005
2011
2007
2006
2011
2009
2008
2007
2006
2010
2012
Hardness (ppm)
N/A
N/A
67
77
57
92
44
72
97
41
72
56
55
62
N/A
Sodium (ppm)
N/A
N/A
10
32
10
4.9
3.5
12
29
15
6.4
12
16
9
N/A
Microbial Contaminants
MCL
TDPUD System Highest Month
Total Coliform Bacteria
Copper/Lead
Copper (ppm)
Lead(ppb)
Disinfection Residual
Chlorine (ppm)
Disinfection Byproducts
Total Trihalomethanes (ppb)
> Than 2 positive samples or more than
5% positive samples per month
AL I MCLG I TDPUD Water System 90th Percentile Value
1.3 1 0.3 1 0.074
15 0.2 1 N/D
MRDL MRDLG I Aver-
age
4 1 4 1 0.35
MCL PHG Aver-
(MCLG) age
80 N/A 4.6
0.00 %
# of Sites
Sampled
30
30
Range for TDPUD Water System
0.32 - 0.37
Range for TDPUD Water System
N/D - 8.3
lace
# of Sites that Exceeded Action Level
0 1 NO
0 1 NO
Sample Date
08/02/2012 1 NO
MMEdrinking
water. The USEPA continues to research the health effects of low levels of arsenic, which
is a mineral known to cause cancer in humans at high concentrations and is linked to other health
Major Origins in
effects such as skin damage and circulatory problems.
Drinking Water
* Glenshire Drive Well: The Arsenic test results shown for the Glenshire Drive Well is a seasonal
weighted average. The Glenshire Drive Well water is blended with the Prosser Village Well and
the Old Greenwood Well prior to any connection to the consumer. The well was in use from May
to September in 2012. The Arsenic test results at the blending point ranged from a low of 2.7 ppb
Erosion of
to a high of 6.1 ppb with an average of 4.7 ppb.
natural deposits
TERMS USED IN THIS REPORT
Detected Compounds: The State allows us to monitor for some contaminants less than
Leaching of natural
deposits, sewage, runoff
once per year because the concentrations of these contaminants do not change fre-
from fertilizer use.
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
Erosion of natural
deposits
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 al-
lowed 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,
Natural -occurring
taste and appearance of drinking water.
organic materials
Maximum Contaminant Level Goal (MCLG): The level of a contaminant in drinking
water below which there is no known or expected risk to health. MCLGs are set by the
U.S. Environmental Protection Agency.
Leaching from
Public Health Goal (PHG): The level of a contaminate in drinking water below which
natural
deposits
there is no known or expected risk to health. PHGs are set by the California Environ-
mental Protection Agency.
Primary Drinking Water Standards (PDWS): MCLs and MRDLs for contaminants that
Substances that form
affect health along with their monitoring and reporting requirements, and water treatment
ions when in water
requirements.
Leaching of natural
Maximum Residual Disinfectant Level (MRDL): The highest level of a disinfectant al -
deposits
lowed in drinking water. There is convincing evidence that addition of a disinfectant is
necessary for control of microbial contaminants.
Maximum Residual Disinfectant Level Goal (MRDLG): The level of a drinking water
disinfectant below which there is no known or expected risk of health. MRDLGs do not
Leaching of
reflect the benefits of the use of disinfectants to control microbial contaminants.
natural deposits
Secondary Drinking Water Standards (SDWS): MCLs for contaminants that affect
taste, odor, or appearance of the drinking water. Contaminants with SDWSs do not af-
fect the health a the MCL levels.
Regulatory Action Level (AL) : The concentration of a contaminant which, if exceeded,
Naturally present in the
triggers treatment or other requirements which a water system must follow.
environment
Radiochemical Parameters -Compounds found in drinking water which emit radiation.
Microbial Parameters -Disease -causing organisms that, at certain levels, may be
harmful. Additional information about Cryptosporidium and Giardia is supplied in this
Corrosion of
report.
household
plumbing systems.
Unregulated Compounds Analyzed -Unregulated Compounds Analyzed- Unregulat-
Flushing prior to use
ed compounds that the Truckee Donner Public Utility District has tested for. These com-
recommended
pounds are not known to be associated with adverse health effects.
TABLE KEY
Drinking Water
Disinfectant added for
N/D- not detectable at testing limit
9
Ci/L Picocuries per Liter A measure of radio -
p ( p ) -
treatment
ppm-Parts per million, or milligrams per liter
activity.
(mg/L)
N/T- not tested
ppb-Parts per billion, or micrograms per liter
N/A -Not Applicable
(ug/L)
ACU (Apparent Color Unit) - A measure of color
By-product of
drinking water
pS/cm-Micro Siemens per centimeter
in drinking water.
disinfection
> - Greater than