2.6. ERMUSR 05-14-2019 - Laserfiche WebLink

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Test Results Definitions Our water is monitored for many different kinds of substances on a very strict sampling schedule.And,the water we deliver must meet specific 90th%ile:The levels reported for lead health standards.Here,we only show those substances that were detected in our water(a complete list of all our.analytical results is available and copper represent the 90th percentile of upon request).Remember that detecting a substance does not mean the water is unsafe to drink;our goal is to keep all detects below their respective the total number of sites tested.The 90th maximum allowed levels. percentile is equal to or greater than 90% of our lead and copper detections. The State recommends monitoring for certain substances less than once per year because the concentrations of these substances do not change frequently.In these cases,the most recent sample data are included,along with the year in which the sample was taken. AL(Action Level):The concentration of a contaminant which,if exceeded,triggers treatment or other requirements which a REGULATED SUBSTANCES water system must follow. SUBSTANCE YEAR MCL MCLG AMOUNT RANGE 4 MCL(Maximum Contaminant Level): (UNIT OF MEASURE) SAMPLED [MRDL] [MRDLG] DETECTED LOW-HIGH VIOLATION TYPICAL SOURCE W The highest level of a contaminant that is 2,4-D(ppb) 2017 70 70 0.25 NA No Runoff from herbicide used on row crops allowed in drinking water.MCLs are set as Barium(ppm) 2018 2 2 0.02 NA No Discharge of drilling wastes;Discharge from metal refineries; close to the MCLGs as feasible using the best available treatment technology. Erosion of natural deposits Chlorine(ppm) 2018 i (4] [4] 0.73 0.58-0.83 No Water additive used to control microbes MCLG(Maximum Contaminant Level Fluoride(ppm) 2018 4 4 0.67 0.63-0.69 No Erosion of natural deposits;Water additive,which promotes Goal): he level lots contaminantichin drinking water below which there is no strong teeth;Discharge from fertilizer and aluminum factories known or expected risk to health.MCLGs Haloacetic Acids[HAA] 2018 60 NA 8.4 1.30-8.40 No By-product of drinking water disinfection allow fora margin of safety. (ppb) MRDL(Maximum Residual Nitrate(ppm) 2018 10 10 2.0 0-2.0 No Runoff from fertilizer use;Leaching from septic tanks, Disinfectant Level):The highest level of sewage;Erosion of natural deposits a disinfectant allowed in drinking water. TTHMs[Total 2018 80 NA 14.2 6.60-14.20 No By-product of drinking water disinfection There is convincing evidence that addition Trihalomethanes](ppb) 3 ofa disinfectant is necessary for control of microbial contaminants. Xylenes(ppm) 2018 1 10 10 0 1 0-0 No Discharge from petroleum factories;Discharge from chemical factories MRDLG(Maximum Residual l Disinfectant Level Goal):The level Tap Water Samples Collected for Copper and Lead Analyses from Sample Sites throughout the Community i of a drinking water disinfectant below SUBSTANCE AMOUNT SITES ABOVE which there is no known or expected (UNIT OF YEAR DETECTED AL/TOTAL I risk to health.MRDLGs do not reflect MEASURE) SAMPLED AL MCLG (90TH%ILE) SITES VIOLATION TYPICAL SOURCE :] the benefits of the use of disinfectants to Copper(ppm) 2016 1.3 1.3 0.15 0/30 No Corrosion of household plumbing systems;Erosion of natural deposits control microbial contaminants. Lead(ppb) 2016 15 0 2.4 0/30 No Lead services lines;Corrosion of household plumbing systems,including NA:Not applicable. fittings and fixtures;Erosion of natural deposits ppb(per per billion):One part UNREGULATED SUBSTANCES 'In-home water softening can increase the level of sodium in your water. substance per billion parts water(or SUBSTANCE YEAR AMOUNT RANGE micrograms per liter). (UNIT OF MEASURE) SAMPLED DETECTED LOW-HIGH TYPICAL SOURCE ppm(parts per million):One part Sodium'(ppm) 2018 4.18 3.01-4.18 Naturally occurring substance per million parts water(or Sulfate(ppm) t 2018 6.98 2.79-6.98 Naturally occurring milligrams per liter). 51