locational running annual averages (LRAA) compliance data for TTHM and HAA. The LRAA for all samples collected at the monitoring locations were below the MCL. 2017 Disinfectant and Disinfection Byproduct Monitoring in the Distribution System Substance Units MCL MCLG Lowest Highest Highest Source Level Level Running in Drinking Annual Water Average MRDL= 4 Water Running additive used Chlorine ppm MRDLG=4 0.3 1.4 0.9 Annual to control Average microbes 80 Byproduct of Total Locational drinking Trihalomethanes ppb Running NA 18 67 42 water (TTHM) Annual disinfection Average 60 Byproduct of Locational Haloacetic Acids drinking ppb Running NA 2 7 7 (HAA) water Annual disinfection Average 2017 Aesthetic Water Quality Analysis from Distribution System and Secondary Drinking Water Guidelines Secondary Lowest Detected Highest Detected Substance Units Guideline* Level Level Alkalinity ppm NA 130 133 pH NA 6.5 8.5 7.5 8.1 – Sodium ppm NA 92 102 Temperature °F NA 65 91 Total Dissolved ppm 500 622 642 Solids (TDS) ppm 267 284 Total Hardness NA grains/gallon 15.6 16.6 *Non-Enforceable Guidelines Recommended by EPA.
locational running annual averages (LRAA) compliance data for TTHM and HAA. The LRAA for all samples collected at the monitoring locations were below the MCL. 2017 Disinfectant and Disinfection Byproduct Monitoring in the Distribution System Substance Units MCL MCLG Lowest Level Highest Level Highest Running Annual Average Source in Drinking Water Chlorine ppm MRDL= 4 Running Annual Average MRDLG=4 0.3 1.4 0.9 Water additive used to control microbes Total Trihalomethanes (TTHM) ppb 80 Locational Running Annual Average NA 18 67 42 Byproduct of drinking water disinfection Haloacetic Acids (HAA) ppb 60 Locational Running Annual Average NA 2 7 7 Byproduct of drinking water disinfection 2017 Aesthetic Water Quality Analysis from Distribution System and Secondary Drinking Water Guidelines Substance Units Secondary Guideline* Lowest Detected Level Highest Detected Level Alkalinity ppm NA 130 133 pH NA 6.5 – 8.5 7.5 8.1 Sodium ppm NA 92 102 Temperature °F NA 65 91 Total Dissolved Solids (TDS) ppm 500 622 642 Total Hardness ppm grains/gallon NA 267 15.6 284 16.6 *Non-Enforceable Guidelines Recommended by EPA.
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