Consumer Confidence Report Water Quality Report 2019

UTILI AT AT TI ER UTILI ER UTILI TI TI ER A R L I N G TO N WAT E R U T I L I T I E S 2 0 1 9 Water Quality Report TI UTILI AT ER AT Know Your H2O From Source to Tap More than 350 students entered Arlington Water Utilities’ Value of Water coloring contest in 2019. Some of the winners are featured inside. Arlington Water Utilities takes pride in meeting or exceeding all federal and state requirements for water quality. The story of how that water gets to homes, schools and businesses starts at the source. Arlington purchases its water for treatment from the Tarrant Regional Water District, or TRWD. The water comes from four reservoirs – Cedar Creek, Richland Chambers, Lake Arlington and Lake Benbrook. The “raw water” is treated at Arlington’s state-of-the-art Pierce-Burch and John F. Kubala Water Treatment Plants. Ozone is used as the primary disinfectant. Aluminum sulfate and a cationic polymer are added to help dirt and other particles clump together and settle out during treatment. The water is then filtered through granular activated carbon beds to remove smaller particles and substances that are dissolved in the water. The water is treated with chloramine (chlorine and ammonia) as it enters storage. Chloramine is a disinfectant that keeps the water safe on its way to your faucet. water treatment process Raw water pump station Where does Arlington drinking water come from? Mixing Sedimentation basin chamber Pre-Ozonation Reservoirs Coagulation basin Arlington gets its water for treatment from the Tarrant Regional Water District. The water comes from four reservoirs - Cedar Creek, Richland-Chambers, Lake Arlington and Lake Benbrook. Primary disinfection (Ozone) Distribution Clearwell storage Secondary disinfection (Chloramine) Filters y ) Health information for special populations You may be more vulnerable than the general population to certain microbial contaminants, such as Cryptosporidium, in drinking water. Infants, some elderly or immuno-compromised persons such as those undergoing chemotherapy for cancer; those who have undergone organ transplants; those who are undergoing treatment with steroids and people with HIV/AIDS or other immune system disorders can be particularly at risk from infections. You should seek advice about drinking water from your health care provider. Additional guidelines on appropriate means to lessen the risk of infection by Cryptosporidium are available from the Safe Drinking Water Hotline (800-426-4791). Emerging Water Quality Issues Arlington Water Utilities is committed to protecting public health and meets or surpasses all state and federal health standards for tap water. Under the 1996 amendments to the federal Safe Drinking Water Act, the Environmental Protection Agency is required once every five years to issue a new list of up to 30 unregulated contaminants for which water systems must monitor. To help advance the science of drinking water, we have been collecting data for the EPA regarding the occurrence of these compounds in our water supply, which is the first step in determining whether they should be regulated. In 2019, the City of Arlington monitored for two metals, eight pesticides, one pesticide manufacturing byproduct, three brominated haloacetic acid (HAA) groups, three alcohols and three semi-volatile chemicals in the drinking water at our two treatment plants as well as at 12 distribution sites representing all areas of the city. We also monitored bromide and total organic carbon in the source waters. Table B on page 3 lists the compounds that were detected in the study. All others were not detected. The presence of a compound does not necessarily equate to a health risk. The concentration of a compound is a far more important factor in determining whether there are health implications. To learn more about the Unregulated Contaminant Monitoring Rule, visit: www.epa.gov/dwucmr or www.DrinkTap.org. Este informe incluye información importante sobre su agua potable, si necesita ayuda para entender esta información por favor llame al 817-575-8984. Ban bao cao nay bao gom nhung thong tin can biet ve nuoc uong. Moi chi tiet va thac mac xin lien lac 817-575-8984.