Know Your Environment. Protect Your Health.

Chloroform

City of Fargo

Chloroform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Chloroform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Read More.

In addition to tap water disinfection, chloroform pollution in the environment also comes from industrial discharges from pulp and paper mills, and from urban wastewater effluent. Human studies show that chloroform damages the kidneys, liver and central nervous system. In animals, chloroform causes infertility, birth defects and cancer.

Click here to read more about disinfection byproducts.

 

192

Samples

0

Samples exceeding legal limit (MCL)

183

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20187.28 ppb32320.740 ppb - 13.9 ppb
20193.70 ppb3230ND - 6.57 ppb
20208.84 ppb3231ND - 17.1 ppb
20216.50 ppb3230ND - 14.3 ppb
20227.96 ppb3230ND - 20.8 ppb
20234.89 ppb3230ND - 8.73 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.4 ppb

The EWG Health Guideline of 0.4 ppb for chloroform was based on the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer and harm to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-1318-S2607.22 ppb
2018-02-1318-S2617.38 ppb
2018-02-1318-S2577.61 ppb
2018-02-1318-S2557.17 ppb
2018-02-1318-S2588.10 ppb
2018-02-1318-S2566.96 ppb
2018-02-1318-S2548.70 ppb
2018-02-1318-S2596.65 ppb
2018-05-1418-S6755.96 ppb
2018-05-1418-S6788.38 ppb
2018-05-1418-S6817.75 ppb
2018-05-1418-S67911.5 ppb
2018-05-1418-S6827.85 ppb
2018-05-1418-S6807.40 ppb
2018-05-1418-S6766.67 ppb
2018-05-1418-S6777.60 ppb
2018-08-2018-S174012.9 ppb
2018-08-2018-S174513.6 ppb
2018-08-2018-S174313.9 ppb
2018-08-2018-S174210.3 ppb
2018-08-2018-S174710.9 ppb
2018-08-2018-S174113.6 ppb
2018-08-2018-S174613.9 ppb
2018-08-2018-S174412.0 ppb
2018-11-1418-S24040.750 ppb
2018-11-1418-S24021.36 ppb
2018-11-1418-S24031.59 ppb
2018-11-1418-S24010.940 ppb
2018-11-1418-S24001.89 ppb
2018-11-1418-S23990.740 ppb
2018-11-1418-S24050.890 ppb
2018-11-1418-S24060.840 ppb
2019-02-1119-S1591.23 ppb
2019-02-1119-S1641.77 ppb
2019-02-1119-S1611.68 ppb
2019-02-1119-S160ND
2019-02-1119-S1651.67 ppb
2019-02-1119-S1661.51 ppb
2019-02-1119-S1621.57 ppb
2019-02-1119-S1631.84 ppb
2019-05-1319-S5723.10 ppb
2019-05-1319-S5672.91 ppb
2019-05-1319-S568ND
2019-05-1319-S5693.23 ppb
2019-05-1319-S5733.51 ppb
2019-05-1319-S5742.66 ppb
2019-05-1319-S5703.14 ppb
2019-05-1319-S5714.85 ppb
2019-08-2019-S17514.27 ppb
2019-08-2019-S17485.34 ppb
2019-08-2019-S17524.18 ppb
2019-08-2019-S17464.04 ppb
2019-08-2019-S17454.56 ppb
2019-08-2019-S17504.86 ppb
2019-08-2019-S17475.80 ppb
2019-08-2019-S17495.37 ppb
2019-11-1219-S24045.28 ppb
2019-11-1219-S24036.57 ppb
2019-11-1219-S24066.44 ppb
2019-11-1219-S24085.09 ppb
2019-11-1219-S24076.41 ppb
2019-11-1219-S24024.92 ppb
2019-11-1219-S24056.14 ppb
2019-11-1219-S24094.50 ppb
2020-02-1136107611.7 ppb
2020-02-113610770.770 ppb
2020-02-1136107812.4 ppb
2020-02-1136107911.2 ppb
2020-02-1136108010.5 ppb
2020-02-1136108111.6 ppb
2020-02-1136108211.3 ppb
2020-02-1136108310.4 ppb
2020-05-113646192.37 ppb
2020-05-11364618ND
2020-05-113646172.77 ppb
2020-05-113646166.59 ppb
2020-05-1136462310.5 ppb
2020-05-1136462210.3 ppb
2020-05-113646213.69 ppb
2020-05-113646205.72 ppb
2020-08-1137017716.0 ppb
2020-08-113701787.04 ppb
2020-08-1137017916.0 ppb
2020-08-1137018016.2 ppb
2020-08-1137018115.6 ppb
2020-08-1137018217.1 ppb
2020-08-1137018315.5 ppb
2020-08-1137018416.3 ppb
2020-11-123731164.49 ppb
2020-11-123731179.89 ppb
2020-11-123731184.13 ppb
2020-11-123731194.54 ppb
2020-11-123731205.08 ppb
2020-11-123731214.88 ppb
2020-11-123731224.36 ppb
2020-11-123731234.08 ppb
2021-02-093761803.94 ppb
2021-02-09376181ND
2021-02-093761823.85 ppb
2021-02-093761835.05 ppb
2021-02-093761844.64 ppb
2021-02-093761854.87 ppb
2021-02-093761164.74 ppb
2021-02-093761174.10 ppb
2021-05-103803085.21 ppb
2021-05-10380309ND
2021-05-103803105.00 ppb
2021-05-103803115.64 ppb
2021-05-103803125.07 ppb
2021-05-103803135.24 ppb
2021-05-103803144.51 ppb
2021-05-103803154.25 ppb
2021-08-0938421114.3 ppb
2021-08-093842129.78 ppb
2021-08-093842139.07 ppb
2021-08-0938421411.2 ppb
2021-08-0938421512.0 ppb
2021-08-0938421612.4 ppb
2021-08-0938421710.7 ppb
2021-08-0938421810.3 ppb
2021-11-083885274.89 ppb
2021-11-083885289.77 ppb
2021-11-083885294.45 ppb
2021-11-083885305.74 ppb
2021-11-0838853110.6 ppb
2021-11-083885325.38 ppb
2021-11-083885335.66 ppb
2021-11-083885345.90 ppb
2022-02-073918972.21 ppb
2022-02-07391898ND
2022-02-073918992.07 ppb
2022-02-073919002.47 ppb
2022-02-073919012.99 ppb
2022-02-073919022.44 ppb
2022-02-073919031.87 ppb
2022-02-073919042.59 ppb
2022-05-093953105.41 ppb
2022-05-09395311ND
2022-05-093953125.54 ppb
2022-05-093953135.84 ppb
2022-05-093953066.79 ppb
2022-05-093953077.29 ppb
2022-05-093953088.33 ppb
2022-05-093953098.60 ppb
2022-08-0939953619.4 ppb
2022-08-0939953719.9 ppb
2022-08-0939953820.8 ppb
2022-08-0939953920.8 ppb
2022-08-0939954019.8 ppb
2022-08-0939954118.6 ppb
2022-08-0939954219.4 ppb
2022-08-0939954316.1 ppb
2022-11-084039082.92 ppb
2022-11-0840390912.2 ppb
2022-11-084039102.94 ppb
2022-11-084039113.87 ppb
2022-11-084039123.69 ppb
2022-11-084039132.96 ppb
2022-11-084039143.51 ppb
2022-11-084039153.50 ppb
2023-02-064071782.62 ppb
2023-02-06407179ND
2023-02-064071803.08 ppb
2023-02-064071813.22 ppb
2023-02-064071825.80 ppb
2023-02-064071832.98 ppb
2023-02-064071843.77 ppb
2023-02-064071853.93 ppb
2023-05-234111717.47 ppb
2023-05-23411172ND
2023-05-234111737.67 ppb
2023-05-234111748.51 ppb
2023-05-234111757.76 ppb
2023-05-234111767.41 ppb
2023-05-254117458.73 ppb
2023-05-254117468.36 ppb
2023-08-084151373.29 ppb
2023-08-084151387.06 ppb
2023-08-084151396.85 ppb
2023-08-084151406.27 ppb
2023-08-084151416.41 ppb
2023-08-084151426.17 ppb
2023-08-084151436.51 ppb
2023-08-084151446.27 ppb
2023-11-064190252.47 ppb
2023-11-064190245.21 ppb
2023-11-064190272.73 ppb
2023-11-064190263.45 ppb
2023-11-064190203.66 ppb
2023-11-064190212.87 ppb
2023-11-064190232.97 ppb
2023-11-064190222.89 ppb