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HomeMy WebLinkAbout2011Vol. 77ssue 7 City Hall 5160 Yellow toae / PO Box S604 23]-2400 July 2072 This report replaces the July Newsletter. CITY OF CHUBBUCK ANNUAL WATER QUALITY REPORT Is my water safe? We are pleased to present this year's Annual Water Quality Report (Consumer Confidence Report) as required by the Safe Drinking Water Act (SDWA). This report is designed to provide details about where your water comes from, what it con- tains, and how it compares to standards set by regulatory agencies. This report is a snapshot of last year's water quality. We are committed to providing you with information because informed customers are our best allies. Do I need to take special precautions? Some people may be more vulnerable to contaminants in drinking water than the general population. Immune - compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ trans- plants, 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 Dis- ease Control (CDC) guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other micro- bial contaminants are available from the Safe Water Drinking Hotline (800-426-4791). Where does my water come from? Your drinking water comes from three wells drilled into the Lower Porhieuf River Aquifer. They are located throughout the city. This water is very high quality and is disinfected with chlorine before delivery to your home. Well No. 4 does have a special treatment system. It is described below. The only man -caused contaminant in the water is Tetrachloroethylene (PCE or PERC). The source of PCE contamination is unknown at this time. We are able to treat the water using an air stripping processto remove high concentrations of PCE. Source water assessment and its availability The state has completed an assessment of our source water. That report is available for review at the City Offices. Why are there contaminants in my drinking water? Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contami- nants. The presence 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 (EPA) Safe Drinking Water Hotline (800-426-4791). 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: 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: microbial contaminants, such as viruses and bacteria, that may come from sewage treatment plants, septic systems, agricul- tural livestock operations, and wildlife; inorganic contaminants, such as salts and metals, which can be naturally occurring 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 agriculture, urban storm water run- off, and residential uses; organic Chemical Contaminants, including synthetic and volatile organic chemicals, which are by-products of industrial processes and petroleum production, and can also come from gas stations, urban storm water run- off, and septic systems; and radioactive contaminants, which 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, EPA prescribes regulations that limit the amount of certain contaminants in water provided by public water systems. Food and Drug Administration (FDA) regula- tions establish limits for contaminants in bottled water which must provide the same protection for public health. Page 2 City of Chubbuck Annual Water Quality Report Continued How can I get involved? The City has attempted to make this report informative and readable. This report shows our water quality and what it means. If you have questions about the report or your drinking water, please call the City Public Works offices at (208) 237-2430, and further assistance will be provided. If you would like to have input on how your drinking water is provided, you may either call the number above, or attend the City Council meetings. The Chubbuck City Council meets at 7:00 P.M. every second and fourth Tuesday of the month. The meetings are held in the City Offices located at 5160 Yellowstone Ave. Please feel free to participate in these meetings. Cross Connection Control Survey The purpose of this survey is to determine whether across -connection may exist at your home or business. A cross connection is an unprotected or improper connection to a public water distribution system that may cause contamination or pollution to enter the system. We are responsible for enforcing cross -connection control regulations and insuring that no contaminants can, under any flow conditions, enter the distribution system. If you have any of the devices listed below please contact us so that we can discuss the issue, and if needed, survey your connection and assist you in isolating it if that is necessary. • Boiler/ Radiant heater (water heaters not included) • Underground lawn sprinkler system • Pool or hot tub (whirlpool tubs not included) • Additional source's) of water on the property • Decorative Rod • Watering trough Additional Information for 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. CITY OF CHUBBUCK is responsible for providing high quality drinking water, but cannot control the variety of materials used in plumbing components. 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, 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. Monitoring Requirements Not Met Our water system violated drinking water requirements last year by not sampling at one of our wells for VOC's and Nitrates. These have been below MCL limits in past years and have met health standards. We will sample and monitor this site, as well as the others in current and future years. Water Quality Data Table In order to ensure that tap water is safe to drink, EPA prescribes regulations which limit the amount of contaminants in water provided by public water systems. The table below lists all of the drinking water contaminants that we detected during the cal- endar year of this report. Although many more contaminants were tested, only those substances listed below were found in your water. All sources of drinking water contain some naturally occurring contaminants. At low levels, these substances are generally not harmful in our drinking water. Removing all contaminants would be extremely expensive, and in most cases, would not provide increased protection of public health. A few naturally occurring minerals may actually improve the taste of drinking water and have nutritional value at low levels. Unless otherwise noted, the data presented in this table is from testing done in the calendar year of the report. The EPA or the State requires us to monitor for certain contaminants less than once per year because the concentrations of these contaminants do not vary significantly from year to year, or the system is not consid- ered vulnerable to this type of contamination. As such, some of our data, though representative, may be more than one year old. In this table you will find terms and abbreviations that might not be familiar to you. To help you better understand these terms, we have provided the definitions below the table. See Table Next Page. Page 4 City of ChubbuckAnnual Water Quality Report Definitions. City of Chubbuck Public Works Office Address: 5160 YELLOWSTONE AVE. CHUBBUCK, ID 83202 Phone: 208-237-2430 Fax: 208-237-2409 Term Definition Man m: parts per million, or milligrams per liter m L b b: parts per billion, or micrograms per liter L NA NA: not applicable ND ND: Not detected NR NR: Monitoringnot re uired, but recommended. 7 ( I N JI:,' ,i� i i3 ; f I i ,i} �3 i 3[(q .I fl `� i }� 11111111111 UI Ip1 IV . Rieml)efimdone ! 1Crf Ihfi1� itt i S i1 i1 ! £} i 3 I � '; j I ii�HI �� i�� ? I'1 � 4� £31• �'; � 1 � 4 4 Term Definition MCLG: Maximum Contaminant Level Goal: The level of a contaminant in drinking water below which there is no known or MCLG expected risk to health. MCLGs allow for a margin of safety. MCL: Maximum Contaminant Level: The highest level of a contaminant that is allowed in drinking water. MCLS are set as MCL close to the MCLGs as feasible using the best available treatment technology. TT 'IT: Treatment Technique: A required process intended to reduce the level of a contaminant in drinking water. AL: Action Level: The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a AL waters stem must follow. Variances and Exemptions Variances and Exemptions: State or EPA permission not to meet an MCL or a treatment technique under certain conditions. MRDLG: Maximum residual disinfection level goal. The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLCs do not reflect the benefits of the use of disinfectants to control microbial con- MRDLG taminants. MRDL: Maximum residual disinfectant level. The highest level of a disinfectant allowed in drinking water. There is convinc- MRDL ing evidence that addition of a disinfectant is necessary for control of microbial contaminants. MNR MNR: Monitored Not Regulated M{{PL MPL State ed Maximum Permissible Level 55 Yti 1t?!II±}}+ti pAssi [ { ;ii � O 9ilnn! ,y . ,;I # 3 �; I' I s` 11{ ' i� r s Es 63i City of Chubbuck Public Works Office Address: 5160 YELLOWSTONE AVE. CHUBBUCK, ID 83202 Phone: 208-237-2430 Fax: 208-237-2409 Page 3 City of ChuhbuckAnnual Water Quality Table. e V Haloacetic Acids By-product of drinking water (HAAS ) (ppb) NA 60 0 0 0 2011 No chlorination. TTHMs [Total Triha- By-product of drinking water lomethanes] (ppb) NA 80 1.30 1.30 5.1 2011 No disinfection. Chlorine (as C12) Water additive used to control Win) 1 4 4 0.2630 0.200 1 0.386 2011 No microbes. ON MM"W � 1, �1! EMU I 1h ! Hl Discharge from petroleum refineries; fire retardants; ce- ramics; electronics; solder; test Antimony (ppb) 6 6 0 ND 0 2010 No addition. Erosion of natural deposits; Runoff from orchards; Runoff from glass and electronics Arsenic (ppb) 0 10 3.48 1.95 3.48 2010 No production wastes. Discharge from steel and pulp mills; Erosion of natural de - Chromium pb) 100 100 7.21 ND 7.21 2010 No osits. Erosion of natural deposits; Water additive which pro- motes strong teeth; Discharge from fertilizer and aluminum Fluoride (ppm) 4 1 4 0 ND 0.34 2010 No factories. Runoff from fertilizer use; Leaching from septic tanks, Nitrate [measured as sewage; Erosion of natural Nitrogen] (p in) 10 10 4.02 4.02 5.71 2011 No deposits. Discharge from petroleum and metal refineries; Erosion of natural deposits; Discharge Selenium (ppb) 50 1 50 2.07 1 2.07 2.49 1 2010 No from mines. Tetrachloroethylene Discharge from factories and (ppb) 0 5 0.79 0.79 0.83 2011 No 1dry cleaners. i!M YO ;1 11RII i!�; ph"! 11 ',�1VICLG AL W80 III I M 'I"M pl1AjOM Corrosion of household Lead - action level at plumbing systems; Erosion of ,consumer taps b 0 15 9 2010 2 No natural deposits.