Know Your Environment. Protect Your Health.

Chloroform

Village Water System

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.

 

129

Samples

0

Samples exceeding legal limit (MCL)

55

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND320ND
20190.318 ppb3220ND - 1.000 ppb
20200.423 ppb1611ND - 1.000 ppb
20210.444 ppb1712ND - 0.770 ppb
20220.553 ppb1611ND - 1.30 ppb
20230.286 ppb167ND - 0.830 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
2018-02-1235373899001ND
2018-02-1235373899002ND
2018-02-1235373899003ND
2018-02-1235373899004ND
2018-02-1235373899001ND
2018-02-1235373899002ND
2018-02-1235373899003ND
2018-02-1235373899004ND
2018-05-1035392013001ND
2018-05-1035392013002ND
2018-05-1035392013003ND
2018-05-1035392013004ND
2018-05-1035392013001ND
2018-05-1035392013002ND
2018-05-1035392013003ND
2018-05-1035392013004ND
2018-08-1535411592001ND
2018-08-1535411592002ND
2018-08-1535411592003ND
2018-08-1535411592004ND
2018-08-1535411592001ND
2018-08-1535411592002ND
2018-08-1535411592003ND
2018-08-1535411592004ND
2018-11-1635432197001ND
2018-11-1635432197002ND
2018-11-1635432197003ND
2018-11-1635432197004ND
2018-11-1635432197001ND
2018-11-1635432197002ND
2018-11-1635432197003ND
2018-11-1635432197004ND
2019-02-2135450236001ND
2019-02-2135450236002ND
2019-02-2135450236003ND
2019-02-21354502360040.440 ppb
2019-02-2135450236001ND
2019-02-2135450236002ND
2019-02-2135450236003ND
2019-02-21354502360040.440 ppb
2019-05-17354695070010.640 ppb
2019-05-17354695070020.440 ppb
2019-05-1735469507003ND
2019-05-17354695070040.710 ppb
2019-05-17354695070010.640 ppb
2019-05-17354695070020.440 ppb
2019-05-1735469507003ND
2019-05-17354695070040.710 ppb
2019-08-23354929990010.370 ppb
2019-08-23354929990021.000 ppb
2019-08-23354929990030.260 ppb
2019-08-2335492999004ND
2019-08-23354929990010.370 ppb
2019-08-23354929990021.000 ppb
2019-08-23354929990030.260 ppb
2019-08-2335492999004ND
2019-11-14355128070010.470 ppb
2019-11-14355128070020.300 ppb
2019-11-1435512807003ND
2019-11-14355128070040.450 ppb
2019-11-14355128070010.470 ppb
2019-11-14355128070020.300 ppb
2019-11-1435512807003ND
2019-11-14355128070040.450 ppb
2020-02-2435533015001ND
2020-02-24355330150020.520 ppb
2020-02-2435533015003ND
2020-02-2435533015004ND
2020-05-28355532510010.420 ppb
2020-05-28355532510020.430 ppb
2020-05-2835553251003ND
2020-05-28355532510040.580 ppb
2020-08-11355704040010.500 ppb
2020-08-11355704040020.920 ppb
2020-08-11355704040030.450 ppb
2020-08-11355704040040.650 ppb
2020-11-05355904570010.610 ppb
2020-11-05355904570020.680 ppb
2020-11-0535590457003ND
2020-11-05355904570041.000 ppb
2021-02-2635615306001ND
2021-02-26356153060020.530 ppb
2021-02-2635615306003ND
2021-02-26356153060040.500 ppb
2021-05-14356338350010.720 ppb
2021-05-14356338350020.740 ppb
2021-05-1435633835003ND
2021-05-14356338350040.640 ppb
2021-06-10356401170010.630 ppb
2021-08-19356578820010.770 ppb
2021-08-19356578820020.580 ppb
2021-08-1935657882003ND
2021-08-19356578820040.530 ppb
2021-11-19356799640010.670 ppb
2021-11-19356799640020.590 ppb
2021-11-1935679964003ND
2021-11-19356799640040.650 ppb
2022-02-10356966590010.490 ppb
2022-02-10356966590020.490 ppb
2022-02-1035696659003ND
2022-02-10356966590040.510 ppb
2022-05-19357202520011.30 ppb
2022-05-1935720252002ND
2022-05-1935720252003ND
2022-05-1935720252004ND
2022-08-18357414940010.810 ppb
2022-08-18357414940020.740 ppb
2022-08-1835741494003ND
2022-08-18357414940040.610 ppb
2022-11-16357613480010.810 ppb
2022-11-16357613480021.20 ppb
2022-11-16357613480030.790 ppb
2022-11-16357613480041.10 ppb
2023-02-17357806890010.520 ppb
2023-02-17357806890020.530 ppb
2023-02-1735780689003ND
2023-02-1735780689004ND
2023-05-19358018010010.740 ppb
2023-05-19358018010020.830 ppb
2023-05-19358018010030.500 ppb
2023-05-19358018010040.620 ppb
2023-08-1135820278001ND
2023-08-1135820278002ND
2023-08-1135820278003ND
2023-08-11358202780040.830 ppb
2023-11-0835840810001ND
2023-11-0835840810002ND
2023-11-0835840810003ND
2023-11-0835840810004ND