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HomeMy WebLinkAbout20 Attachment 2 Hirschdale 2022 CCR Final ' TRUCKEE DONNER Public Utility District 2W9 WAT�B QWAWTY B�PQBT 11 Customer Views Are Welcome The Truckee Donner Public Utility District encourages community partici- pation in the public process. If you are interested in participating in the TDPUD's decision-making process, you are welcome to attend Board Meetings. f The TDPUD Board of Directors primarily meets twice monthly on the first and third Wednesdays, or as approved by the Board, at 6:00 PM at 11570 Donner Pass Road, Truckee, California. Agendas for upcoming meetings may be obtained on our website or by contacting the District Clerk's office o m . at(530) 582-3980. ; For More Information: 0 Regarding this report or the water treatment process, contact Truckee Donner Public Utility District's Senior Water Quality Technician, ClayL__Fmore Walker at (530)582-3926. ion about visit our 0 Pertaining to water conservation and efficiency, the TDPUD has waterite atconservation programs that will help customers save water and save pud.org . money. Information can be found on our website or by calling (530) 587-3896. HIRSCHDALE WATER SYSTEM In This Document I . Water Quality General Information y{` . Source Water Assessment E R. - . Where Our Water Comes From • Lead In Drinking Water Definitions •� Sampling Results Water Quality Truckee Donner Public Utility District is able to report that it has met all State and - Federal drinking water standards. The data in this report is a snapshot of the quality of water provided to TDPUD customers for the 2022 calendar year. This -T report includes details about our local water sources, annual water quality sam- pling ' P Y q Y � data, 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 supply because customers who are well informed _ are key to the collaborative process in identifying improvements that are neces- sary to maintain the highest drinking water standards. It is important to note, that while the TDPUD strives to meet all State and Federal drinking water standards, 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, people who have under- gone organ transplants, people with HIV/AIDS or other immune system disorders, rAssessment some elderly individuals, and infants can be particularly at risk from infections. ource Water These people should seek advice about drinking water from their health care pro- viders. USEPA/Centers for Disease Control (CDC) guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbiologi- A source water assessment has cal contaminants are available from the Safe Drinking Water Hotline at (800)426- been completed for the well serving 4791 or https://www.epa.gov/ground-water-and-drinking-water/safe-drinking- the Hirschdale area. The well is water-hotline. located in the town of Hirschdale. The District owns and operates the single well which is 270ft in depth. A Lead in Residential Plumbing copy of the complete assessment may be viewed at the Truckee If present, elevated levels of lead can cause serious health problems, especially Donner Public Utility District office, for pregnant women and young children. In circumstances where lead is detected located at 11570 Donner Pass in drinking water, it is primarily derived from materials and components associat- Road, Truckee, California, or by ed with service lines and residential plumbing. The TDPUD is responsible for calling Chad Reed at (530)582- providing high quality water, but cannot control the variety of materials used in 3984. plumbing components. When your water has been sifting for a prolonged period of time, 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. We conduct routine sampling for lead every three years. The last sampling was performed in 2022, where all sites tested below the Federal action level for lead. More information about lead in drinking water, testing methods, and steps you can take to minimize exposure can be found at www.epa.gov/lead. Where Our Water Comes From � _� The source of drinking water served to our Hirschdale customers comes from ate . well drawing from a deep aquifer.We filter this water to remove iron, manganese, and arsenic before delivering it to your home. Additionally, each month the system is sampled for microbial quality. Because of natural filtration,the groundwater aquifer is protected from surface water contami- nation, giving us a high quality of drinking water. 0 Cryptosporidium and Giardia Recognizing that our potable water sources are exclusive) drawn from a deep rnuii+iu�n�r 9 9 P Y P � ,r rrrr1f+rrrru...!�ii i,' groundwater well, the presence of microscopic organisms such as Cryptosporidi- um and Giardia in our water is highly unlikely. If ingested, Cryptosporidium and Giardia can cause diarrhea,fever, and other gastrointestinal symptoms. Substances That May Be Found In Water Definitions Sources of drinking water (both tap and bot- Maximum Contaminant Level (MCL): The highest tled water) include rivers, lakes, streams, level of a contaminant that is allowed in drinking water. ponds, reservoirs, springs, and wells. As Primary MCLs are set as close to the PHGs (or MCLGs) water travels over the surface of the land or as is economically and technologically feasible. through the ground, it dissolves naturally- Secondary MCLs are set to protect the odor, taste, and occurring minerals and, in some cases, radi- appearance of drinking water. oactive material, and can pick up substances resulting from the presence of animals or t Maximum Contaminant Level Goal (MCLG): The level from human activity. of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs are set by In order to ensure that tap water is safe to the U.S. Environmental Protection Agency(USEPA). drink, the U.S. Environmental Protection Agency (USEPA) and the State Water �_. ,:y. : �- Public Health Goal (PHG): The level of a contaminant Resources Control Board (State Board) in drinking water below which there is no known or prescribe regulations that limit the amount of certain contaminants in water expected risk to health. PHGs are set by the California provided by public water systems. Drinking water, including bottled water, may Environmental Protection Agency. contain at least small amounts of some contaminants. The presence of many of these contaminants does not necessarily indicate that water poses a health Maximum Residual Disinfectant Level (MRDL): The risk. highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a Examples of contaminants that may be present in source water include: disinfectant is necessary for control of microbial contaminants. Microbial Contaminants, such as viruses and bacteria, that may come from stormwater or wastewater, septic systems, agricultural livestock opera- Maximum Residual Disinfectant Level Goal tions, and wildlife; (MRDLG): The level of a drinking water disinfectant below which there is no known or expected risk to Inorganic Contaminants, such as salts and metals, that can be health. MRDLGs do not reflect the benefits of the use of naturally occurring or can result from erosion, urban stormwater runoff, indus- disinfectants to control microbial contaminants. trial or domestic wastewater discharges, oil and gas production, mining, or farming; Primary Drinking Water Standards (PDWS): MCLs and MRDLs for contaminants that affect health along Pesticides and Herbicides, that may come from a variety of sources such with their monitoring and reporting requirements, and as agriculture, urban stormwater runoff, and residential uses; water treatment requirements. Organic Chemical Contaminants, including synthetic and volatile organic Secondary Drinking Water Standards (SDWS): MCLs chemicals, which are by-products of industrial processes and petroleum for contaminants that affect taste, odor, or appearance production, and which can also come from gas stations, urban stormwater of the drinking water. Contaminants with SDWSs do not runoff, agricultural applications, and septic systems; affect the health at the MCL levels. Radioactive Contaminants, that can be naturally occurring or can be the Regulatory Action Level (AL): The concentration of a result of oil and gas production and mining activities. contaminant which, if exceeded, triggers treatment or More information about contaminants and potential health effects can be other requirements that a water system must follow. obtained by calling the U.S. EPA's Safe Drinking Water Hotline at (800)426- 4791. Table Key N/A: not applicable N/D: not detectable at testing limit ppm: parts per million or milligrams per liter (mg/L) ppb: parts per billion or micrograms per liter (pg/L) ppt: parts per trillion or nanograms per liter(ng/L) pCi/L: picocuries per liter(a measure of radiation) (pS/cm): micro Siemens per centimeter (NTU): nephelometric turbidity unit (measures water cloudiness) The data in the following tables is from the most recent monitoring done in compliance with Federal and California drinking water regulations. Some data may be more than one year old. Based upon Federal and State requirements,the monitoring interval for each constituent varies, and can be any one of the following: weekly, monthly, semi-annually, annually, biennially, or once every three, six, or nine years, or as deemed necessary by regulatory agencies. - LO INGIM LIFORM BACTE Microbiological Contami- Highest of Dete c- No.of months in nants violation MCL MCLG Typical Source of Bacteria tions More than 5%of samples Total Coliform Bacteria 0 0 in a month with a detec- 0 Naturally present in the environment tion Contaminant #Samples, Average Range MCL(MRDL) MCLG Typical Source of Contaminant Frequency Level (MRDLG) Chlorine Residual(ppm) 1 per month 0.49 .27-.58 4 4 Drinking water disinfectant added for treatment Total Trihalomethanes 1 on 24 N/A 80 N/A By-product of drinking water (ppb) 9/22/22 disinfection Haloacectic Acids(ppb) 1 on 4.3 N/A 60 N/A By-product of drinking water 9/22/22 disinfection TABLE —DISTRIBUTION SYSTEM CUSTOMER TAP SAMPLING FOR LEAD AND COPPER 90th per- No.of No.sites Date Last centile Lead and Copper Sampled samples level de- exceeding AL PHG Typical Source of Contaminant collected tected AL Internal corrosion of household water Lead(ppb) 8/11/22 5 .02 0 15 0.2 plumbing systems;discharges from industrial manufacturers;erosion of natural deposits Internal corrosion of household Copper(ppm) 8/11/22 5 0.046 0 1.3 0.3 plumbing systems;erosion of natu- ral deposits;leaching from wood preservatives -CA RA LING RESULTS FOR SODIU Chemical or Constituent Date Last Level De- PHG (reporting units) Sampled tected Range of Detections MCL (MCLG) Typical Source of Contaminant Sodium(ppm) 2022 40 N/A N/A N/A Salt present in the water and is general- ly naturally occurring Sum of polyvalent cations present Hardness(as CaCO3)(ppm) 2022 91 N/A N/A N/A in the water,generally magnesium and calcium,and are usually natu- rally occurring Chemical or Constituent Date Last Range of Detec- PHG (reporting units) Sampled Level Detected tions MCL (MCLG) Typical Source of Contaminant Alkalinity(as CaCO3)(ppm) 2022 150 N/A N/A N/A Erosion of natural deposits Bicarbonate Alkalinity(as 2022 180 N/A N/A N/A Leaching of natural deposits HCO3)(ppm) Calcium(ppm) 2022 15 N/A N/A N/A Erosion of natural deposits Magnesium(ppm) 2022 13 N/A N/A N/A Erosion of natural deposits Potassium(ppm) 2022 7.1 N/A N/A N/A Erosion of natural deposits Chemical or Constituent Date Last Range of Detec- PHG (reporting units) Sampled Level Detected tions MCL (MCLG) Typical Source of Contaminant Inorganic Contaminants Arsenic(ppb) 2022 1.6 N/D-5.9 10 0.004 Erosion of natural deposits Barium(ppm) 2022 87 N/A 1000 2000 Erosion of natural deposits Fluoride(ppm) 2022 0.096 N/A 2 1 Erosion of natural deposits Turbidity(NTU) 2022 3 N/A 5 5 Soil runoff Radioactive Contaminants Gross Alpha Particle 2018 N/D 3 15 0 Erosion of natural deposits Activity(pCi/L) Radon(pCi/L) 2005 570 N/A N/A* N/A* Erosion of natural deposits *Note The State of California does not have an MCL for Radon. The EPA has an advisory MCL of 4000 pCi/L for Radon. L ETECTION Chemical or Constituent Date Last Range of Detec- PHG (reporting units) Sampled Level Detected tions MCL (MCLG) Typical Source of Contaminant Chloride(ppm) 2022 7.6 N/A 250 N/A Leaching of natural deposits Iron(ppb) 2022 9.5 N/A 300 N/A Leaching of natural deposits Manganese(ppb) 2022 13 N/A 50 N/A Leaching of natural deposits pH 2O22 7.9 7.7- 8.0 6.5- 8.5 N/A Erosion of natural deposits Specific)Conductance 2022 350 N/A 1600 N/A Substances that form ions when in (µS/cm Sulfate 2022 14 N/A 250 N/A Leaching of natural deposits Total Dissolved Solids 2022 250 N/A 500 N/A Leaching of natural deposits (ppm) FREQUENTLY ASKED QUESTIONS Q. Why does my water smell and taste like chlorine? A. Chlorine is regularly injected into the water at the source as a disinfectant that aids in elimi- nating potentially harmful bacteria present in water. In high demand summer months a chlorine taste may be more noticeable because the water is "fresh" or "newer" and has not had time to dissi- pate through the system. Chlorine can also gas off in warm/hot water which produces a smell strong- er than normal. Some people are more sensitive than others to the taste and smell of chlorine and may become aware of occasional changes. This is normal and safe. Chlorine levels are continually monitored. Q. Why does my water taste like metal? A.The source water is ground water, which has a mineral content that might give off a metal taste some are not used to. Sometimes plumbing can cause a metal taste, especially if water has been sitting in pipes for several hours. It's best to flush the lines for of couple minutes if water has sat in pipes for an extended period of time, however, this does not indicate a higher or lower degree of water quality. Q. Why is there white crust on my shower head? A.The minerals in water may leave white spots on glasses, coffeepots, shower heads and show- er doors. These spots are calcium deposits and are not harmful to health. Q. Why is there a black ring around my toilet? A. When water sits for an extended period of time, mold can grow. Mold will grow in dark, wet, cool places making the toilet bowl a perfect environment to live. If this occurs adding bleach to the bowl and letting it sit works best, or before leaving for more than a couple days leave a small amount of bleach in the bowl. Q. What clauses cloudy water? A. Cloudy or milky water is usually caused by trapped air picked up from an air pocket in the wa- ter main or internal plumbing. Sometimes flows or water cascading within the aqueduct can also trap air, similar to a waterfall. If water sits in a glass or pitcher for a few minutes the air will dissipate and become clear.