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2018 Drinking Water Report CONSUMER CONFIDENCE REPORT Shorewood 2018 DRINKING WATER REPORT Making Safe Drinking Water Your drinking water comes from the following groundwater sources: Shorewood purchases wate Chanhassen and your system has six wells ranging from 326 to 640 feet deep, that dra Prairie Du Chien-Jordan, Prairie Du Chien Group and Tunnel City-Wonewoc aquifers. Shorewood works hard to provide you with safe and reliable drinking water that meets federal and state water quality requirements. The purpose of this report is to pro water and how to protect our precious water resources. Contact Larry Brown, Director of Public Works, at (952) 960-7913 or lbrown@shorewoodpw.com if you have questions about drinking water. You can also ask for information about how you can take part in decisions that may affect water quality. The U.S. Environmental Protection Agency sets safe drinking water standards. These standards limit the amounts of specific contaminants allowed in drinking water. This for most people. The U.S. Food and Drug Administration regulates the amount of certain contaminants in bottled water. Bottled water must provide the same public health protection as public tap water. Drinking water, including bottled water, may reasonably be expecl amounts of some contaminants. The presence of contaminants does not necessarily indicate that r poses a health risk. More information about contaminants and potential health e -800-426-4791. Shorewood Monitoring Results This report contains our monitoring results from January 1 to December 31, 2018. We work with the Minnesota Department of Health to test drinking water for more than 100 contaminants. It is not unusual to detect contaminants in small No water supply is ever completely free of contaminants. Drinking water standards protect Minnesotans fr that may be harmful to their health. Basics of Monitoring and Testing of Drinking Water in Minnesota (https://www.health.state.mn.us/communities/environment/water/fa PUBLIC WATER SUPPLY IDENTIFICATION (PWSID): 1270051 PAGE 1 CONSUMER CONFIDENCE REPORT How to Read the Water Quality Data Tables The tables below show the contaminants we found last year or the contaminant. They also show the levels of those contaminants and limits. Substances that we tested for but did not find are not included in the tables. We sample for some contaminants less than once a year because th change from year to year. If we found any of these contaminants we sampled for them, we included them in the tables below with the detection date. We may have done additional monitoring for contaminants that are not included in the Safe Dr Water Act. To request a copy of these results, call the Minnesota Departmnt of Health at 651-201-4700 or 1-800-818-9318 between 8:00 a.m. and 4:30 p.m., Monday through Friday. Definitions AL (Action Level): The concentration of a contaminant which, if exceeded, trigger other requirements which a water system must follow. EPA: Environmental Protection Agency MCL (Maximum contaminant level): The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the technology. MCLG (Maximum contaminant level goal): The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow Level 1 Assessment: A Level 1 assessment is a study of the water system to identifal problems and determine (if possible) why total coliform bacteria system. Level 2 Assessment: A Level 2 assessment is a very detailed study of the water sys potential problems and determine (if possible) why an E. coli MCL violation has occurred and/or why total coliform bacteria have been found in our water system MRDL (Maximum residual disinfectant level): The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a of microbial contaminants. MRDLG (Maximum residual disinfectant level goal): The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs the use of disinfectants to control microbial contaminants. NA (Not applicable): Does not apply. NTU (Nephelometric Turbidity Units): A measure of the cloudiness of the water (turbidity). pCi/l (picocuries per liter): A measure of radioactivity. ppb (parts per billion): One part per billion in water is like one drop in one billion about one drop in a swimming pool. ppb is the ppm (parts per million): One part per million is like one drop in one million drops of about one cup in a swimming pool. ppm is the same as milligrams PWSID: Public water system identification. TT (Treatment Technique): A required process intended to reduce the level of a contaminant drinking water. PUBLIC WATER SUPPLY IDENTIFICATION (PWSID): 1270051 PAGE 2 CONSUMER CONFIDENCE REPORT Variances and Exemptions: State or EPA permission not to meet an MCL or a treatment tech under certain conditions. Monitoring Results Regulated Substances LEAD AND COPPER Tested at customer taps. Number of Contaminant 90% of Ideal Homes (Date, if sampled Action Results Were Violation Typical Sources Goal with in previous year)Level Less Than (MCLG) High Levels Copper 90% of 0 ppm 0.65 ppm 0 out of NO Corrosion of (06/21/17) homes 20 household less plumbing. than 1.3 ppm Lead (06/21/17) 90% of 0 ppb 5.5 ppb 1 out of NO Corrosion of homes 20 household less plumbing. than 15 ppb PUBLIC WATER SUPPLY IDENTIFICATION (PWSID): 1270051 PAGE 3 CONSUMER CONFIDENCE REPORT INORGANIC & ORGANIC CONTAMINANTS Tested in drinking water. Highest Range of Contaminant (Date, if Ideal Average or Detected Typical sampled in previous Limit Violation Goal Highest Single Test Sources year) (MCL) (MCLG) Test Result Results Arsenic (06/20/17) 10.4 ppb 0 ppb 5.72 ppb N/A NO Erosion of natural deposits; Runoff from orchards; Runoff from glass and electronics production wastes. Gross Alpha 15.4 0 pCi/l 8.4 pCi/l 0.0 - 8.4 NO Erosion of pCi/l pCi/l natural deposits. Combined Radium 5.4 pCi/l 0 pCi/l 5.2 pCi/l 0.0 - 5.2 NO Erosion of pCi/l natural deposits. CONTAMINANTS RELATED TO DISINFECTION Tested in drinking water. Highest Range of Substance (Date, if Ideal Goal Average or Detected sampled in (MCL or Violation Typical Sources (MCLG or Highest Single Test previous year) MRDL) MRDLG) Test Result Results Total 80 ppb N/A 1.1 ppb N/A NO By-product of Trihalomethanes drinking water (TTHMs) disinfection. Total Haloacetic 60 ppb N/A 2.3 ppb N/A NO By-product of Acids (HAA) drinking water disinfection. Total Chlorine 4.0 ppm 4.0 ppm 1.23 ppm 0.25 - NO Water additive used 1.95 ppm to control microbes. PUBLIC WATER SUPPLY IDENTIFICATION (PWSID): 1270051 PAGE 4 CONSUMER CONFIDENCE REPORT Total HAA refers to HAA5 OTHER SUBSTANCES Tested in drinking water. Range of Substance (Date, if Highest Average or Detected Typical sampled in previous Limit Ideal Goal Highest Single Test Violation Test Sources year) (MCL) (MCLG) Result Results Fluoride 4.0 ppm 4.0 ppm 0.97 ppm 0.74 - NO Erosion of 1.10 natural ppm deposits; Water additive to promote strong teeth. Potential Health Effects and Corrective Actions (If Applicable) Arsenic: While your drinking water meets EPA's standard for arse levels of arsenic. EPA's standard balances the current understanding of arsenic's possible health effects against the costs of removing arsenic from drinki research the health effects of low levels of arsenic, which is a in humans at high concentrations and is linked to other health effects such as skin damage and circulatory problems. Lead: Infants and children who drink water containing lead in ex experience delays in their physical or mental development. Childw slight deficits in attention span and learning abilities. Adults who drink this develop kidney problems or high blood pressure. Some People Are More Vulnerable to Contaminants in Drinking Water Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons such as persons with cancer undergoing chemo undergone organ transplants, people with HIV/AIDS or other immunelderly, and infants can be particularly at risk from infections. The developing fetus and therefore pregnant women may also be more vulnerable to contaminants in drinking water. These people or their caregivers should seek advice about drinking water from their health care providers. EPA/Centers for Disease Control (CDC) PUBLIC WATER SUPPLY IDENTIFICATION (PWSID): 1270051 PAGE 5 CONSUMER CONFIDENCE REPORT guidelines on appropriate means to lessen the risk of infection /©ä¦·š­¦š©z7zҒ and other microbial contaminants are available from the Safe Drinking Water Hotline -800-426-4791. Learn More about Your Drinking Water Drinking Water Sources found in aquifers beneath the surface of the land. Groundwater s drinking water. Surface water is the water in lakes, rivers, and Contaminants can get in drinking water sources from the natural activities. There are five main types of contaminants in drinkin Microbial contaminants, such as viruses, bacteria, and parasites. Sources include sewage plants, septic systems, agricultural livestock operations, pets, and wildlife. Inorganic contaminants include salts and metals from natural sources (e.g. rock and soi production, mining and farming operations, urban stormwater runo Pesticides and herbicides are chemicals used to reduce or kill unwanted plants and pests. Sources include agriculture, urban stormwater runoff, and commercial and Organic chemical contaminants include synthetic and volatile organic compounds. Sources includ industrial processes and petroleum production, gas stations, urban stormwate systems. Radioactive contaminants such as radium, thorium, and uranium isotopes come from natural sources (e.g. radon gas from soils and rock), mining operations, and oiland gas production. The Minnesota Department of Health provides information about your drinking water source(s) in a source water assessment, including: How Shorewood is protecting your drinking water source(s); Nearby threats to your drinking water sources; How easily water and pollution can move from the surface of the based on natural geology and the way wells are constructed. Find your source water assessment at Source Water Assessments (https://www.health.state.mn.us/communities/environment/water/sw or call 651-201-4700 or 1- 800-818-9318 between 8:00 a.m. and 4:30 p.m., Monday through Friday. Lead in Drinking Water You may be in contact with lead through paint, water, dust, soilComing in contact with lead can cause serious health problems for everyone children under six years, and pregnant women are at the highest risk. Lead is rarely in a drinking water source, but it can get in you service lines and your household plumbing system. Shorewood provinking water, but it cannot control the plumbing materials used in private buildings. PUBLIC WATER SUPPLY IDENTIFICATION (PWSID): 1270051 PAGE 6 CONSUMER CONFIDENCE REPORT Read below to learn how you can protect yourself from lead in drinking water. 1.Let the water run for 30-60 seconds before using it for drinking or cooking if the water not been turned on in over six hours. If you have a lead service line, yo A service line is the underground pipe that brings water from the your home. You can find out if you have a lead service line by contacting your public water system, or y check by following the steps at: https://www.mprnews.org/story/2016/06/24/npr-find-lead- pipes-in-your-home The only way to know if lead has been reduced by letting it run the water run does not reduce lead, consider other options to re 2.Use cold water for drinking, making food, and making baby formula. Hot water releases more lead from pipes than cold water. 3.Test your water. In most cases, letting the water run and using cold water for dr should keep lead levels low in your drinking water. If you are sarrange with a laboratory to test your tap water. Testing your water is impor women drink your tap water. Contact a Minnesota Department of Health accredited laboratory to get a sample container and instructions on how to submit a sample: Environmental Laboratory Accreditation Program (https://eldo.web.health.state.mn.us/public/accreditedlabs/labse The Minnesota Department of Health can help you understand your test results. 4.Treat your water if a test shows your water has high levels of lead after you let Read about water treatment units: Point-of-Use Water Treatment Units for Lead Reduction (https://www.health.state.mn.us/communities/environment/water/fa Learn more: Visit Lead in Drinking Water (https://www.health.state.mn.us/communities/environment/water/co Visit Basic Information about Lead in Drinking Water (http://www.epa.gov/safewater/lead) Call the EPA Safe Drinking Water Hotline at 1-800-426-4791.To learn about how to reduce your contact with lead from sources other than your drinking water, vLead Poisoning Prevention: Common Sources (https://www.health.state.mn.us/communities/envir. Help Protect Our Most Precious Resource Water PUBLIC WATER SUPPLY IDENTIFICATION (PWSID): 1270051 PAGE 7 CONSUMER CONFIDENCE REPORT Conservation Conservation is essential, even in the land of 10,000 lakes. For example, in parts of the metropolitan area, groundwater is being used faster than it can be replaced. Some agricultural regions in Minnesota are vulnerable to drought, which can affect crop yields and municipal water supplies. We must use our water wisely. Below are some tips to help you and your family conserve and save money in the process. Fix running toiletsthey can waste hundreds of gallons of water. Turn off the tap while shaving or brushing your teeth. Shower instead of bathe. Bathing uses more water than showering, Only run full loads of laundry, and set the washing machine to t Use water-efficient appliances (look for the WaterSense label). Use water-friendly landscaping, such as native plants. When you do water your yard, water slowly, deeply, and less freq and close to the ground. Learn more (https://www.pca.state.mn.us/living-green/conserving-water) U.S. Environmental Protection (https://www.epa.gov/watersense) PUBLIC WATER SUPPLY IDENTIFICATION (PWSID): 1270051 PAGE 8