Water Quality
The tables below summarize the average finish water quality from the Town's water treatment plants. Iron should be less than 0.3 mg/l, manganese less than 0.05 mg/l, color less than 15 color units. Turbidity is a measure of the cloudiness of the water. Finished Water Gallons represents the total finished water pumped into the system.
Pond Street Water Treatment Plant
Month and Year | pH | Iron (mg/l) | Manganese (mg/l) | Color (units) | Turbidity (NTU) | Free Chorine (mg/l) | Total Chlorine (mg/l) | Finished Water Gallons |
---|---|---|---|---|---|---|---|---|
01-2017 | 7.76 | 0.013 | 0.029 | 1 | 0.06 | 1.04 | 1.26 | 27,409,299 |
02-2017 | 7.85 | 0.011 | 0.032 | 1 | 0.07 | 1.02 | 1.19 | 21,875,548 |
03-2017 | 7.80 | 0.012 | 0.033 | 1 | 0.06 | 0.93 | 1.12 | 25,574,548 |
04-2017 | 7.77 | 0.012 | 0.033 | 2 | 0.07 | 0.97 | 1.14 | 28,492,120 |
05-2017 | 7.80 | 0.010 | 0.044 | 2 | 0.07 | 0.92 | 1.07 | 26,831,650 |
06-2017 | 7.79 | 0.011 | 0.053 | 2 | 0.08 | 0.89 | 1.06 | 30,010,867 |
07-2017 | 7.84 | 0.011 | 0.060 | 3 | 0.09 | 0.94 | 1.18 | 30,126,389 |
08-2017 | 7.74 | 0.013 | 0.042 | 3 | 0.09 | 1.03 | 1.27 | 30,579,503 |
09-2017 | 7.74 | 0.013 | 0.041 | 1 | 0.08 | 1.04 | 1.29 | 23,940,561 |
10-2017 | 7.80 | 0.015 | 0.041 | 1 | 0.08 | 1.12 | 1.35 | 23,540,561 |
11-2017 | 7.77 | 0.012 | 0.044 | 3 | 0.08 | 1.15 | 1.39 | 18,384,853 |
12-2017 | 7.71 | 0.011 | 0.037 | 1 | 0.07 | 1.13 | 1.29 | 18,384,853 |
01-2018 | 7.68 | 0.011 | 0.038 | 1 | 0.07 | 1.05 | 1.25 | 19,433,696 |
02-2018 | 7.76 | 0.012 | 0.033 | 1 | 0.06 | 1.05 | 1.26 | 17,688,112 |
03-2018 | 7.88 | 0.012 | 0.030 | 1 | 0.07 | 1.14 | 1.36 | 24,119,628 |
04-2018 | 7.74 | 0.010 | 0.025 | 1 | 0.07 | 1.05 | 1.33 | 25,514,482 |
05-2018 | 7.75 | 0.010 | 0.032 | 2 | 0.07 | 1.12 | 1.39 | 30,861,841 |
06-2018 | 7.72 | 0.012 | 0.040 | 2 | 0.08 | 1.18 | 1.41 | 32,411,164 |
07-2018 | 7.74 | 0.013 | 0.037 | 2 | 0.08 | 1.18 | 1.47 | 33,864,240 |
08-2018 | 7.77 | 0.015 | 0.031 | 2 | 0.10 | 1.15 | 1.48 | 30,960,464 |
09-2018 | 7.85 | 0.016 | 0.039 | 2 | 0.09 | 1.18 | 1.51 | 27,366,894 |
10-2018 | 7.89 | 0.019 | 0.039 | 3 | 0.12 | 1.15 | 1.48 | 22,912,342 |
11-2018 | 7.89 | 0.022 | 0.036 | 2 | 0.08 | 1.38 | 1.72 | 19,902,443 |
12-2018 | 7.70 | 0.021 | 0.031 | 1 | 0.08 | 1.42 | 1.76 | 17,775,398 |
01-2019 | 7.61 | 0.018 | 0.028 | 1 | 0.13 | 1.20 | 1.48 | 18,874,875 |
02-2019 | 7.70 | 0.019 | 0.027 | 0 | 0.08 | 1.30 | 1.55 | 14,707,697 |
03-2019 | 7.67 | 0.023 | 0.027 | 0 | 0.07 | 1.24 | 1.48 | 17,683,065 |
04-2019 | 7.69 | 0.021 | 0.032 | 1 | 0.09 | 1.20 | 1.39 | 22,014,787 |
05-2019 | 7.69 | 0.020 | 0.034 | 2 | 0.08 | 1.08 | 1.27 | 22,788,313 |
06-2019 | 7.63 | 0.016 | 0.038 | 2 | 0.08 | 1.21 | 1.42 | 18,879,406 |
07-2019 | 7.64 | 0.017 | 0.053 | 5 | 0.11 | 1.24 | 1.52 | 23,765,055 |
08-2019 | 7.58 | 0.015 | 0.055 | 5 | 0.14 | 1.27 | 1.58 | 24,338,947 |
09-2019 | 7.50 | 0.014 | 0.039 | 4 | 0.12 | 1.27 | 1.56 | 21,883,259 |
10-2019 | 7.56 | 0.015 | 0.037 | 3 | 0.12 | 1.31 | 1.59 | 23,091,174 |
11-2019 | 7.72 | 0.016 | 0.033 | 2 | 0.09 | 1.61 | 1.97 | 21,400,155 |
12-2019 | 7.70 | 0.014 | 0.031 | 1 | 0.08 | 1.23 | 1.44 | 18,476,320 |
01-2020 | 7.65 | 0.018 | 0.031 | 1 | 0.08 | 1.17 | 1.41 | 18,201,460 |
02-2020 | 7.65 | 0.023 | 0.029 | 1 | 0.08 | 1.13 | 1.36 | 14,316,647 |
03-2020 | 7.67 | 0.018 | 0.033 | 1 | 0.08 | 1.23 | 1.45 | 15,715,957 |
04-2020 | 7.68 | 0.016 | 0.033 | 1 | 0.08 | 1.26 | 1.46 | 18,699,716 |
05-2020 | 7.66 | 0.018 | 0.037 | 1 | 0.08 | 0.67 | 1.79 | 24,776,754 |
06-2020 | 7.78 | 0.020 | 0.048 | 4 | 0.11 | 0.18 | 2.47 | 25,295,288 |
07-2020 | 7.76 | 0.022 | 0.047 | 4 | 0.12 | 0.15 | 2.66 | 28,233,825 |
08-2020 | 7.85 | 0.023 | 0.035 | 2 | 0.11 | 0.23 | 2.63 | 27,356,361 |
09-2020 | 7.65 | 0.023 | 0.032 | 1 | 0.10 | 0.19 | 2.92 | 24,519,394 |
10-2020 | 7.62 | 0.025 | 0.033 | 1 | 0.09 | 0.17 | 3.00 | 24,015,698 |
11-2020 | 7.77 | 0.020 | 0.040 | 2 | 0.08 | 0.13 | 3.06 | 20,022,665 |
12-2020 | 7.78 | 0.019 | 0.036 | 2 | 0.09 | 0.14 | 2.88 | 20,377,713 |
01-2021 | 7.65 | 0.018 | 0.034 | 2 | 0.09 | 0.11 | 2.69 | 23,143,710 |
02-2021 | 7.75 | 0.036 | 0.034 | 1 | 0.09 | 0.11 | 2.55 | 20,206,255 |
03-2021 | 7.83 | 0.019 | 0.033 | 1 | 0.09 | 0.07 | 2.66 | 14,960,884 |
04-2021 | 7.70 | 0.018 | 0.037 | 1 | 0.09 | 0.11 | 2.58 | 19,195,059 |
05-2021 | 7.70 | 0.016 | 0.035 | 2 | 0.08 | 0.09 | 2.46 | 26,719,327 |
06-2021 | 7.63 | 0.018 | 0.041 | 3 | 0.10 | 0.10 | 2.57 | 24,055,224 |
07-2021 | 7.68 | 0.018 | 0.072 | 8 | 0.14 | 0.11 | 2.86 | 24,104,164 |
08-2021 | 7.11 | 0.012 | 0.073 | 8 | 0.20 | 0.11 | 2.88 | 26,132,956 |
09-2021 | 8.04 | 0.014 | 0.059 | 10 | 0.20 | 0.12 | 3.21 | 21,995,421 |
10-2021 | 7.75 | 0.014 | 0.058 | 7 | 0.20 | 0.06 | 3.36 | 20,493,602 |
11-2021 | 7.65 | 0.018 | 0.043 | 6 | 0.14 | 0.06 | 2.65 | 24,067,067 |
12-2021 | 7.59 | 0.019 | 0.050 | 3 | 0.11 | 0.03 | 1.76 | 22,558,636 |
01-2022 | 7.67 | 0.025 | 0.036 | 1 | 0.10 | 0.03 | 1.15 | 22,348,780 |
02-2022 | 7.71 | 0.020 | 0.040 | 1 | 0.09 | 0.05 | 1.07 | 20,584.361 |
03-2022 | 7.62 | 0.022 | 0.032 | 1 | 0.09 | 0.02 | 1.05 | 20,924,351 |
04-2022 | 7.81 | 0.019 | 0.039 | 1 | 0.11 | 0.02 | 1.76 | 17,235,243 |
05-2022 | 7.71 | 0.019 | 0.055 | 3 | 0.13 | 0.03 | 2.22 | 25,116,625 |
06-2022 | 7.71 | 0.017 | 0.057 | 5 | 0.17 | 0.07 | 3.02 | 27,545,995 |
07-2022 | 7.77 | 0.014 | 0.083 | 9 | 0.22 | 0.02 | 3.16 | 28,253,845 |
08-2022 | 7.89 | 0.017 | 0.030 | 1 | 0.10 | 0.01 | 3.23 | 25,989,107 |
09-2022 | 7.84 | 0.019 | 0.036 | 2 | 0.12 | 0.01 | 3.33 | 21,645,387 |
10-2022 | 7.96 | 0.022 | 0.026 | 2 | 0.11 | 0.01 | 3.44 | 25,864,244 |
11-2022 | 7.86 | 0.020 | 0.034 | 3 | 0.11 | 0.01 | 3.30 | 23,129,974 |
12-2022 | 7.99 | 0.024 | 0.032 | 3 | 0.11 | 0.01 | 2.29 | 21,559,063 |
01-2023 | 7.94 | 0.021 | 0.037 | 2 | 0.25 | 0.03 | 2.24 | 18,570,234 |
02-2023 | 8.14 | 0.019 | 0.033 | 1 | 0.10 | 0.01 | 2.41 | 13,859,718 |
03-2023 | 8.15 | 0.021 | 0.027 | 2 | 0.11 | 0.01 | 2.41 | 16,848,405 |
04-2023 | 7.86 | 0.020 | 0.031 | 2 | 0.11 | 0.01 | 2.39 | 23,597,081 |
05-2023 | 7.89 | 0.021 | 0.031 | 3 | 0.11 | 0.01 | 2.39 | 29,843,944 |
06-2023 | 7.91 | 0.025 | 0.038 | 3 | 0.12 | 0.01 | 2.42 | 26,342,556 |
07-2023 | 7.85 | 0.022 | 0.056 | 7 | 0.16 | 0.01 | 2.36 | 24,960,380 |
08-2023 | 7.75 | 0.019 | 0.057 | 7 | 0.19 | 0.02 | 3.17 | 24,943,436 |
09-2023 | 7.78 | 0.021 | 0.052 | 8 | 0.19 | 0.01 | 3.11 | 21,058,288 |
10-2023 | 7.79 | 0.021 | 0.043 | 5 | 0.18 | 0.01 | 3.25 | 22,682,994 |
11-2023 | 7.85 | 0.024 | 0.045 | 5 | 0.20 | 0.01 | 3.22 | 21,008,964 |
12-2023 | 7.89 | 0.022 | 0.036 | 3 | 0.13 | 0.01 | 3.18 | 19,812,385 |
01-2024 | 7.85 | 0.023 | 0.041 | 2 | 0.13 | 0.01 | 3.21 | 21,553,316 |
02-2024 | 7.89 | 0.023 | 0.032 | 2 | 0.11 | 0.01 | 3.09 | 19,695,822 |
03-2024 | 7.87 | 0.019 | 0.034 | 2 | 0.25 | 0.00 | 3.10 | 21,577,184 |
04-2024 | 7.81 | 0.022 | 0.037 | 2 | 0.12 | 0.01 | 2.89 | 22,483,664 |
Beal Water Treatment Plant
Month and Year | pH | Iron (mg/l) | Manganese (mg/l) | Color (units) | Turbidity (NTU) | Free Chlorine (mg/l) | Total Chlorine (mg/l) | Finished Water Gallons |
---|---|---|---|---|---|---|---|---|
01-2017 | 7.66 | 0.033 | 0.013 | 0.8 | 0.09 | 0.84 | 0.97 | 4,741,778 |
02-2017 | 7.68 | 0.028 | 0.017 | 1 | 0.09 | 1.01 | 1.13 | 5,819,262 |
03-2017 | 7.68 | 0.025 | 0.014 | 0.2 | 0.08 | 0.89 | 1.06 | 8,117,179 |
04-2017 | 7.69 | 0.021 | 0.017 | 1.1 | 0.08 | 0.94 | 1.09 | 7,277,961 |
05-2017 | 7.69 | 0.023 | 0.019 | 0.3 | 0.07 | 0.97 | 1.10 | 7,987,268 |
06-2017 | 7.70 | 0.018 | 0.016 | 0.4 | 0.08 | 0.92 | 1.05 | 8,498,247 |
07-2017 | 7.66 | 0.024 | 0.016 | 0.2 | 0.09 | 0.89 | 1.03 | 8,714,340 |
08-2017 | 7.64 | 0.019 | 0.015 | 0.1 | 0.09 | 0.84 | 0.95 | 7,694,384 |
09-2017 | 7.63 | 0.022 | 0.019 | 0.5 | 0.08 | 0.86 | 0.96 | 7,295,911 |
10-2017 | 7.66 | 0.019 | 0.025 | 0.3 | 0.07 | 0.96 | 1.09 | 7,213,934 |
11-2017 | 7.68 | 0.025 | 0.012 | 0.4 | 0.07 | 0.99 | 1.16 | 7,527,572 |
12-2017 | 7.71 | 0.029 | 0.013 | 0.2 | 0.07 | 0.94 | 1.10 | 7,906,017 |
01-2018 | 7.71 | 0.022 | 0.014 | 0.1 | 0.08 | 1.01 | 1.18 | 7,726,863 |
02-2018 | 7.67 | 0.022 | 0.014 | 0.3 | 0.08 | 0.99 | 1.16 | 7,513,908 |
03-2018 | 7.67 | 0.023 | 0.011 | 0 | 0.08 | 1.02 | 1.20 | 2,952,012 |
04-2018 | DID | NOT | RUN | Did not run | Did not run | Did not run | Did not run | Did not run |
05-2018 | 7.61 | 0.044 | 0.025 | 0.2 | 0.11 | 0.84 | 1.40 | 2,917,588 |
06-2018 | 7.60 | 0.036 | 0.019 | 0.2 | 0.10 | 0.84 | 1.23 | 9,746,810 |
07-2018 | 7.61 | 0.027 | 0.023 | 0.5 | 0.10 | 0.84 | 1.26 | 10,775,193 |
08-2018 | 7.57 | 0.027 | 0.022 | 0.5 | 0.10 | 0.84 | 1.25 | 9,096,104 |
09-2018 | 7.58 | 0.024 | 0.023 | 0 | 0.10 | 0.84 | 1.35 | 6,218,653 |
10-2018 | 7.59 | 0.028 | 0.021 | 1 | 0.09 | 0.84 | 1.43 | 8,513,241 |
11-2018 | 7.58 | 0.036 | 0.021 | 1 | 0.09 | 0.84 | 1.65 | 7,622,144 |
12-2018 | 7.63 | 0.036 | 0.022 | 1 | 0.09 | 0.84 | 1.45 | 8,349,099 |
01-2019 | 7.61 | 0.036 | 0.023 | 1 | 0.11 | 1.16 | 1.38 | 7,788,428 |
02-2019 | 7.64 | 0.038 | 0.016 | 0 | 0.09 | 1.10 | 1.32 | 9,138,174 |
03-2019 | 7.68 | 0.030 | 0.015 | 1 | 0.09 | 1.20 | 1.39 | 8,369,419 |
04-2019 | 7.66 | 0.033 | 0.021 | 0 | 0.09 | 1.20 | 1.43 | 7,861,069 |
05-2019 | 7.67 | 0.040 | 0.023 | 1 | 0.09 | 1.23 | 1.44 | 5,335,020 |
06-2019 | 7.63 | 0.043 | 0.017 | 1 | 0.09 | 1.25 | 1.43 | 6.073,416 |
07-2019 | 7.69 | 0.049 | 0.034 | 1 | 0.11 | 1.10 | 1.27 | 8,995,857 |
08-2019 | 7.64 | 0.036 | 0.023 | 1 | 0.13 | 1.23 | 1.38 | 9,648,609 |
09-2019 | 7.68 | 0.032 | 0.024 | 1 | 0.11 | 1.31 | 1.47 | 8,361,730 |
10-2019 | 7.65 | 0.029 | 0.022 | 1 | 0.11 | 1.18 | 1.31 | 6,451,881 |
11-2019 | 7.63 | 0.036 | 0.023 | 1 | 0.10 | 1.30 | 1.45 | 6,616,181 |
12-2019 | 7.68 | 0.032 | 0.019 | 1 | 0.10 | 1.23 | 1.37 | 6,981,843 |
01-2020 | 7.66 | 0.028 | 0.014 | 0 | 0.10 | 1.12 | 1.27 | 6,835,615 |
02-2020 | 7.61 | 0.039 | 0.016 | 0 | 0.12 | 1.12 | 1.20 | 6,577,102 |
03-2020 | 7.62 | 0.034 | 0.014 | 0 | 0.11 | 1.09 | 1.22 | 8,852,841 |
04-2020 | 7.63 | 0.036 | 0.020 | 1 | 0.11 | 1.17 | 1.39 | 8,114,801 |
05-2020 | 7.51 | 0.030 | 0.015 | 1 | 0.10 | 0.82 | 1.69 | 7,985,374 |
06-2020 | 7.59 | 0.026 | 0.015 | 1 | 0.10 | 0.12 | 2.33 | 6,463,170 |
07-2020 | 7.56 | 0.030 | 0.024 | 1 | 0.10 | 0.02 | 2.50 | 10,176,342 |
08-2020 | 7.61 | 0.030 | 0.023 | 0 | 0.10 | 0.02 | 2.55 | 8,856,602 |
09-2020 | 7.56 | 0.034 | 0.019 | 0 | 0.11 | 0.04 | 2.91 | 8,007,243 |
10-2020 | 7.63 | 0.022 | 0.016 | 0 | 0.11 | 0.02 | 2.87 | 5,100,320 |
11-2020 | 7.60 | 0.022 | 0.018 | 0 | 0.10 | 0.02 | 2.75 | 5,609,192 |
12-2020 | 7.58 | 0.030 | 0.014 | 0 | 0.11 | 0.01 | 2.85 | 5,892,821 |
01-2021 | 7.56 | 0.028 | 0.015 | 0 | 0.10 | 0.04 | 2.63 | 6,850,299 |
02-2021 | 7.59 | 0.022 | 0.011 | 1 | 0.11 | 0.01 | 2.58 | 4,965,309 |
03-2021 | 7.50 | 0.024 | 0.012 | 0 | 0.09 | 0.00 | 2.78 | 9,177,310 |
04-2021 | 7.55 | 0.025 | 0.012 | 0 | 0.12 | 0.03 | 2.61 | 7,009,514 |
05-2021 | 7.50 | 0.028 | 0.016 | 1 | 0.11 | 0.12 | 2.38 | 8,116,689 |
06-2021 | 7.50 | 0.02 | 0.013 | 1 | 0.11 | 0.06 | 2.67 | 8,223,013 |
07-2021 | 7.57 | 0.03 | 0.011 | 1 | 0.12 | 0.06 | 3.08 | 8,334,842 |
08-2021 | 7.55 | 0.03 | 0.010 | 0 | 0.12 | 0.01 | 3.07 | 8,074,601 |
09-2021 | 7.54 | 0.02 | 0.012 | 1 | 0.12 | 0.01 | 3.14 | 4,036,185 |
10-2021 | 7.54 | 0.03 | 0.022 | 1 | 0.12 | 0.02 | 3.74 | 6,717,025 |
11-2021 | 7.46 | 0.02 | 0.018 | 1 | 0.13 | 0.01 | 3.05 | 3,979,613 |
12-2021 | 7.53 | 0.01 | 0.020 | 0 | 0.11 | 0.01 | 1.79 | 5,987,036 |
01-2022 | 7.54 | 0.02 | 0.013 | 0 | 0.11 | 0.01 | 1.16 | 5,774,684 |
02-2022 | 7.57 | 0.03 | 0.012 | 0 | 0.10 | 0.01 | 1.25 | 4,396,068 |
03-2022 | 7.58 | 0.02 | 0.014 | 0 | 0.11 | 0.01 | 1.27 | 5,612,225 |
04-2022 | 7.64 | 0.03 | 0.018 | 0 | 0.11 | 0.00 | 1.72 | 5,480,749 |
05-2022 | 7.59 | 0.02 | 0.027 | 1 | 0.11 | 0.01 | 2.19 | 7,159,558 |
06-2022 | 7.51 | 0.03 | 0.023 | 1 | 0.12 | 0.01 | 3.07 | 6,453,971 |
07-2022 | 7.42 | 0.02 | 0.023 | 4 | 0.13 | 0.01 | 3.31 | 7,637,839 |
08-2022 | 7.62 | 0.02 | 0.016 | 1 | 0.11 | 0.01 | 3.51 | 7,291,038 |
09-2022 | 7.59 | 0.02 | 0.014 | 0 | 0.12 | 0.00 | 3.35 | 5,297,382 |
10-2022 | 7.55 | 0.02 | 0.016 | 1 | 0.12 | 0.00 | 3.31 | 3,750,246 |
11-2022 | 7.57 | 0.02 | 0.015 | 0 | 0.11 | 0.00 | 3.58 | 4,117,467 |
12-2022 | 7.58 | 0.02 | 0.015 | 1 | 0.11 | 0.00 | 2.40 | 4,639,338 |
01-2023 | 7.63 | 0.02 | 0.014 | 1 | 0.10 | 0.00 | 1.87 | 5,895,428 |
02-2023 | 7.60 | 0.02 | 0.017 | 0 | 0.11 | 0.00 | 2.47 | 6,713,264 |
03-2023 | 7.60 | 0.02 | 0.017 | 0 | 0.10 | 0.00 | 2.53 | 4,298,994 |
04-2023 | 7.66 | 0.02 | 0.014 | 1 | 0.11 | 0.00 | 2.41 | 4,261,634 |
05-2023 | 7.70 | 0.02 | 0.011 | 0 | 0.10 | 0.00 | 2.22 | 7,188,460 |
06-2023 | 7.71 | 0.02 | 0.013 | 0 | 0.11 | 0.00 | 2.24 | 6,095,034 |
07-2023 | 7.62 | 0.02 | 0.018 | 1 | 0.10 | 0.00 | 2.25 | 6,737,644 |
08-2023 | 7.63 | 0.02 | 0.015 | 1 | 0.10 | 0.00 | 3.04 | 7,046,548 |
09-2023 | 7.67 | 0.02 | 0.012 | 1 | 0.11 | 0.00 | 3.27 | 6,835,298 |
10-2023 | 7.67 | 0.02 | 0.012 | 0 | 0.11 | 0.01 | 3.46 | 6,140,214 |
11-2023 | 7.69 | 0.02 | 0.015 | 1 | 0.13 | 0.00 | 3.37 | 5,752,289 |
12-2023 | 7.66 | 0.02 | 0.014 | 1 | 0.21 | 0.00 | 3.28 | 5,760,720 |
01-2024 | 7.61 | 0.02 | 0.017 | 1 | 0.13 | 0.00 | 3.32 | 5,858,096 |
02-2024 | 7.48 | 0.02 | 0.018 | 1 | 0.13 | 0.02 | 3.35 | 5,772,511 |
03-2024 | 7.51 | 0.03 | 0.022 | 2 | 0.13 | 0.01 | 3.26 | 5,195,013 |
04-2024 | 7.45 | 0.11 | 0.021 | 1 | 0.15 | 0.00 | 2.80 | 5,084,127 |
Broadway Water Treatment Plant
Month and Year | pH | Iron (mg/l) | Manganese (mg/l) | Color (Units) | Turbidity (NTU) | Free Chlorine (mg/l) | Total Chlorine (mg/l) | Finished Water Gallons |
---|---|---|---|---|---|---|---|---|
01-2017 | 7.75 | 0.025 | 0.013 | 0 | 0.08 | 0.96 | 1.02 | 5,100,170 |
02-2017 | 7.85 | 0.025 | 0.016 | 1.0 | 0.10 | 0.85 | 0.97 | 5,810,353 |
03-2017 | 7.88 | 0.021 | 0.030 | 1.1 | 0.11 | 0.75 | 0.92 | 4,342,840 |
04-2017 | 8.06 | 0.013 | 0.031 | 0.4 | 0.12 | 0.99 | 1.10 | 1,356,950 |
05-2017 | 7.79 | 0.017 | 0.026 | 0.5 | 0.09 | 1.01 | 1.15 | 10,050,148 |
06-2017 | 7.77 | 0.020 | 0.017 | 0.8 | 0.10 | 0.93 | 1.08 | 9,389,497 |
07-2017 | 7.75 | 0.026 | 0.030 | 0.8 | 0.09 | 0.92 | 1.07 | 10,986,511 |
08-2017 | 7.84 | 0.026 | 0.017 | 0.1 | 0.09 | 0.93 | 1.07 | 14,650,549 |
09-2017 | 7.81 | 0.028 | 0.014 | 0.4 | 0.09 | 0.88 | 1.02 | 12,243,694 |
10-2017 | 7.64 | 0.022 | 0.015 | 0.3 | 0.08 | 0.94 | 1.10 | 7,794,088 |
11-2017 | 7.71 | 0.019 | 0.018 | 0.6 | 0.08 | 0.93 | 1.15 | 7,124,984 |
12-2017 | 7.69 | 0.027 | 0.014 | 0.3 | 0.08 | 0.93 | 1.10 | 9,721,707 |
01-2018 | 7.73 | 0.026 | 0.013 | 0.4 | 0.08 | 0.90 | 1.09 | 10,959,586 |
02-2018 | 7.68 | 0.023 | 0.014 | 0.3 | 0.09 | 0.96 | 1.16 | 8,665,393 |
03-2018 | 7.66 | 0.025 | 0.016 | 0.1 | 0.08 | 0.90 | 1.09 | 10,250,119 |
04-2018 | 7.65 | 0.022 | 0.012 | 0.3 | 0.07 | 0.99 | 1.13 | 12,716,259 |
05-2018 | 7.73 | 0.025 | 0.012 | 02 | 0.08 | 1.18 | 1.37 | 12,010,194 |
06-2018 | 7.76 | 0.022 | 0.022 | 0.3 | 0.08 | 1.14 | 1.33 | 11,847,544 |
07-2018 | 7.70 | 0.020 | 0.017 | 0.3 | 0.09 | 1.14 | 1.35 | 9,832,427 |
08-2018 | 7.71 | 0.028 | 0.013 | 0.3 | 0.09 | 1.12 | 1.32 | 9,740,407 |
09-2018 | 7.75 | 0.017 | 0.014 | 0 | 0.08 | 1.11 | 1.31 | 9,118,909 |
10-2018 | 7.79 | 0.028 | 0.015 | 1 | 0.09 | 1.15 | 1.34 | 6,830,890 |
11-2018 | 7.83 | 0.026 | 0.020 | 1 | 0.08 | 1.38 | 1.59 | 7,029,026 |
12-2018 | 7.78 | 0.025 | 0.022 | 1 | 0.09 | 1.30 | 1.51 | 7,775,874 |
01-2019 | 7.57 | 0.030 | 0.022 | 1 | 0.08 | 1.05 | 1.26 | 7,848,213 |
02-2019 | 7.51 | 0.028 | 0.020 | 1 | 0.09 | 1.12 | 1.36 | 6,577,928 |
03-2019 | 7.56 | 0.029 | 0.017 | 0 | 0.08 | 1.04 | 1.24 | 7,365,654 |
04-2019 | 7.58 | 0.029 | 0.021 | 0 | 0.08 | 1.09 | 1.22 | 6,868,279 |
05-2019 | 7.59 | 0.030 | 0.020 | 0 | 0.08 | 1.22 | 1.33 | 12,355,378 |
06-2019 | 7.61 | 0.024 | 0.022 | 1 | 0.09 | 1.20 | 1.38 | 6,073,416 |
07-2019 | 7.54 | 0.020 | 0.037 | 1 | 0.09 | 1.08 | 1.19 | 10,490,174 |
08-2019 | 7.55 | 0.021 | 0.037 | 2 | 0.10 | 1.09 | 1.24 | 10,264,819 |
09-2019 | 7.63 | 0.018 | 0.020 | 1 | 0.09 | 1.25 | 1.39 | 4,899,361 |
10-2019 | 7.54 | 0.023 | 0.040 | 1 | 0.09 | 1.23 | 1.42 | 4,951,911 |
11-2019 | 7.48 | 0.032 | 0.041 | 0 | 0.08 | 1.29 | 1.42 | 2,557,169 |
12-2019 | 7.60 | 0.028 | 0.020 | 0 | 0.08 | 1.12 | 1.26 | 5,192,412 |
01-2020 | 7.58 | 0.019 | 0.011 | 0 | 0.08 | 1.14 | 1.27 | 5,717,540 |
02-2020 | 7.53 | 0.019 | 0.015 | 0 | 0.08 | 1.16 | 1.27 | 5,685,930 |
03-2020 | 7.56 | 0.020 | 0.010 | 0 | 0.07 | 1.20 | 1.33 | 6,606,011 |
04-2020 | 7.51 | 0.014 | 0.013 | 0 | 0.08 | 1.08 | 1.17 | 6,531,659 |
05-2020 | 7.61 | 0.015 | 0.010 | 1 | 0.08 | 1.52 | 1.92 | 7,297,087 |
06-2020 | 7.76 | 0.031 | 0.015 | 0 | 0.08 | 0.01 | 2.43 | 9,207,104 |
07-2020 | 7.57 | 0.026 | 0.015 | 0 | 0.08 | 0.01 | 2.71 | 9,946,503 |
08-2020 | 7.73 | 0.029 | 0.010 | 1 | 0.07 | 0.01 | 2.68 | 11,003,131 |
09-2020 | 7.69 | 0.024 | 0.016 | 1 | 0.07 | 0.02 | 2.95 | 8,419,707 |
10-2020 | 7.56 | 0.028 | 0.013 | 0 | 0.08 | 0.01 | 3.02 | 6,026,663 |
11-2020 | 7.56 | 0.034 | 0.012 | 1 | 0.08 | 0.02 | 3.21 | 5,011,150 |
12-2020 | 7.52 | 0.022 | 0.020 | 0 | 0.07 | 0.05 | 2.78 | 4,749,493 |
01-2021 | 7.71 | 0.034 | 0.014 | 0 | 0.09 | 0.03 | 2.27 | 2,253,505 |
02-2021 | 7.56 | 0.021 | 0.018 | 0 | 0.08 | 0.00 | 2.42 | 4,822,066 |
03-2021 | 7.55 | 0.015 | 0.017 | 1 | 0.08 | 0.02 | 2.30 | 10,511,688 |
04-2021 | 7.57 | 0.015 | 0.012 | 1 | 0.09 | 0.02 | 2.33 | 9,023,312 |
05-2021 | 7.55 | 0.021 | 0.010 | 1 | 0.09 | 0.17 | 2.57 | 11,187,109 |
06-2021 | 7.68 | 0.017 | 0.008 | 1 | 0.12 | 0.06 | 2.64 | 15,785,356 |
07-2021 | 7.65 | 0.027 | 0.011 | 1 | 0.10 | 0.05 | 3.00 | 9,583,812 |
08-2021 | 7.61 | 0.017 | 0.012 | 1 | 0.09 | 0.03 | 3.16 | 8,885,376 |
09-2021 | 7.57 | 0.017 | 0.012 | 1 | 0.09 | 0.01 | 3.35 | 11,654,721 |
10-2021 | 7.61 | 0.019 | 0.015 | 1 | 0.09 | 0.00 | 3.68 | 10,238,478 |
11-2021 | 7.59 | 0.010 | 0.023 | 1 | 0.09 | 0.01 | 2.59 | 5,316,214 |
12-2021 | 7.53 | 0.010 | 0.013 | 0 | 0.08 | 0.01 | 1.27 | 4,170,374 |
01-2022 | 7.55 | 0.015 | 0.012 | 0 | 0.07 | 0.01 | 1.01 | 6,555,866 |
02-2022 | 7.54 | 0.024 | 0.011 | 0 | 0.08 | 0.03 | 1.02 | 4,517,120 |
03-2022 | 7.65 | 0.019 | 0.011 | 0 | 0.08 | 0.01 | 1.00 | 6,160,509 |
04-2022 | 7.63 | 0.028 | 0.015 | 0 | 0.08 | 0.00 | 2.00 | 7,728,992 |
05-2022 | 7.68 | 0.025 | 0.014 | 0 | 0.08 | 0.01 | 2.29 | 11,918,644 |
06-2022 | 7.72 | 0.021 | 0.019 | 1 | 0.10 | 0.01 | 3.03 | 11,297,017 |
07-2022 | 7.65 | 0.020 | 0.024 | 2 | 0.12 | 0.01 | 3.48 | 12,119,222 |
08-2022 | 7.91 | 0.018 | 0.016 | 1 | 0.10 | 0.01 | 3.49 | 10,367,673 |
09-2022 | 7.79 | 0.024 | 0.024 | 1 | 0.09 | 0.01 | 3.61 | 9,482,791 |
10-2022 | 7.80 | 0.016 | 0.016 | 1 | 0.09 | 0.02 | 3.52 | 5,653,924 |
11-2022 | 7.88 | 0.019 | 0.017 | 1 | 0.08 | 0.02 | 3.51 | 3,907,933 |
12-2022 | 7.92 | 0.018 | 0.014 | 1 | 0.34 | 0.01 | 2.03 | 4,096,376 |
01-2023 | 7.88 | 0.017 | 0.019 | 1 | 0.08 | 0.01 | 2.05 | 5,269,803 |
02-2023 | 7.87 | 0.018 | 0.019 | 1 | 0.08 | 0.00 | 2.50 | 7,965,475 |
03-2023 | 7.76 | 0.021 | 0.022 | 1 | 0.08 | 0.00 | 2.62 | 7,869,785 |
04-2023 | 7.60 | 0.020 | 0.020 | 0 | 0.08 | 0.00 | 2.56 | 5,666,669 |
05-2023 | 7.79 | 0.029 | 0.018 | 1 | 0.09 | 0.01 | 2.44 | 7,677,586 |
06-2023 | 7.88 | 0.025 | 0.017 | 1 | 0.09 | 0.01 | 2.30 | 6,784,393 |
07-2023 | 7.78 | 0.022 | 0.017 | 1 | 0.10 | 0.02 | 2.40 | 6,199,594 |
08-2023 | 7.94 | 0.021 | 0.015 | 1 | 0.10 | 0.01 | 3.30 | 7,066,241 |
09-2023 | 7.95 | 0.021 | 0.012 | 2 | 0.09 | 0.00 | 3.38 | 5,874,999 |
10-2023 | 7.78 | 0.016 | 0.014 | 1 | 0.09 | 0.01 | 3.33 | 5,946,164 |
11-2023 | 7.88 | 0.017 | 0.011 | 1 | 0.08 | 0.00 | 3.39 | 4,118,933 |
12-2023 | 7.94 | 0.025 | 0.015 | 1 | 0.10 | 0.00 | 3.36 | 6,025,311 |
01-2024 | 7.72 | 0.027 | 0.013 | 0 | 0.09 | 0.01 | 3.19 | 4,872,367 |
02-2024 | 7.75 | 0.033 | 0.014 | 1 | 0.10 | 0.00 | 3.32 | 5,643,125 |
03-2024 | 7.74 | 0.028 | 0.016 | 1 | 0.10 | 0.00 | 3.47 | 4,886,123 |
04-2024 | 8.20 | 0.020 | 0.019 | 1 | 0.08 | 0.00 | 2.93 | 4,453,978 |
Lead and Copper Historical Test Results
EPA Lead and Copper Rule (LCR) went into effect on July 1, 1992. The data on our Lead and Copper Water Information page is our baseline without any corrosion control measures in place. Compliance with the LCR is based on a 90 percentile level of lead and copper for all samples collected. This baseline data shows a 90th percentile for copper and lead of 1.97 mg/L and 0.010 mg/L, respectively.
Sample Data
Sample Date | Location | Lead (mg/L) | Copper (mg/L) |
---|---|---|---|
11/18/1992 | 103 Briarwood Drive | 0.000 | 1.60 |
11/18/1992 | 106 Shingle Mill Lane | 0.026 | 1.33 |
View all data results |
For information about lead and copper pertaining to Hanover's water and for frequently asked questions, visit our Lead and Copper Water Information page.
Open (Raw) Data
The DPW's Open Data page contains downloadable files of the raw and finished water test results from the three treatment plants as well as production summaries from the plants.
Disinfection Byproducts
The Town chlorinates all of its drinking water to kill harmful bacteria that is present in the untreated water. State and Federal regulations require the Town to maintain a residual amount of chlorine, called free chlorine, in the treated water that leaves the treatment plant. This chlorine guards against harmful bacteria that may enter the distribution system. Unfortunately, this residual chlorine reacts over time with trace amounts of residual organic matter that is also in the water to form disinfection byproducts. These byproducts are regulated as excessive amounts ingested over a lifetime of exposure may cause health problems in some individuals. Prior to the upgrades made in late 2019/early 2020 we soley used chlorine to kill off any harmful bacteria which very was effective but it was found to create disinfection byproducts putting the Town in violation of Federal standards for total trihalomethanes (TTHM's) at one site in North Hanover. To reduce the number of disinfection byproducts while still killing the harmful bacteria, the Town altered the disinfection process at all three treatment plants. These changes officially went into action on May 13th, 2020. Since the installation of the new disinfection process the Town has gone back into complaince with the Federal standards for total trihalomethanes while achieving maintaining proper bacteria inactivation. See the Disinfection Byproducts page for lab THM data yielded from sampled taken from various sites in town since 2018.
Brown Water - Iron and Manganese
Residents may occasionally experience discolored water coming out of their tap. Iron and manganese are commonly found in groundwater in Massachusetts. While the Town's treatment plants do an excellent job removing the minerals, 1-2 percent of the iron and manganese typically pass through the plants. Both minerals will react with chlorine to form oxides of the minerals and will typically settle out in the water distribution system. During periods of higher flow such as a water break, during a fire, or when the summer consumption increases and flows increase in the pipes, the sediments can be lifted off of the bottom of the pipes and will discolor the water. This discoloration is generally an aesthetic problem, causing staining on laundry and on plumbing fixtures. To control the sediments and reduce the likelihood of problems, the Town flushes water mains in the spring and in the fall.
Some scientific studies have shown that manganese in high concentrations can have health effects. The normal concentration of manganese in Hanover's water is typically 1/10th of the health advisory level. The primary source of manganese intake in humans is from regular foods and as such manganese intake from the water is insignificant for most people. However, infants often receive the bulk of their manganese nutrition through baby formula, not solid food. As such, the EPA has issued a health advisory for excessive water-based manganese when high levels of manganese in water it is used to make baby formula.
The Massachusetts Department of Environmental Protection has developed an excellent fact sheet on manganese in drinking water which summarizes the information provided in the EPA health advisory in simple terms.
The Town urges residents to use common sense with respect to discolored water. We recommend that residents run their faucets which will generally clear up the discolored water. If the discoloration persists, please call the DPW office and we will investigate the source of the problem and weather permitting, will attempt to mitigate the issue. We urge residents who may have concerns regarding manganese to read the MassDEP fact sheet and the EPA health advisory and to discuss their concerns with their health care provider.
Consumer Confidence
DPW is proactive and transparent in its quest to provide the highest quality of water possible. Please click on the following link for a narrative of the steps and tests that are performed to ensure the quality of the water over the past few years:
- 2021 Consumer Confidence Report
- 2020 Consumer Confidence Report
- 2019 Consumer Confidence Report
- 2018 Consumer Confidence Report
- 2017 Consumer Confidence Report
- 2016 Consumer Confidence Report
- 2015 Consumer Confidence Report
- 2014 Consumer Confidence Report
- 2013 Consumer Confidence Report
- 2012 Consumer Confidence Report
- 2011 Consumer Confidence Report
- 2010 Consumer Confidence Report
Home Water Treatment Resources
While the Town reduces contaminants in the source water to levels well below state and federal standards, some people have asked how can they make their water better. Home treatment devices can polish the water, reducing the occasional impact of sediments and some other contaminants. The Town will not recommend anyone device over another, but in general simple cartridge style filters will take care of most problems as long as they are changed on a regular basis. When being changed, residents can expect to see discoloration of the filter cartridges as the filters are designed to trap sediments in the filter. We urge residents who are considering home filtration to do their research and speak with multiple vendors to choose the best filter for their needs. The following links are helpful in evaluating home treatment devices.
- EPA Home Drinking Water Filtration Fact Sheet
- NSF Home Drinking Water Filtration Guide
- Consumer Reports Water Filter Buying Guide