Know Your Environment. Protect Your Health.

Chloroform

Washington Township Mua-schoo

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.

 

36

Samples

0

Samples exceeding legal limit (MCL)

18

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.910 ppb108ND - 5.20 ppb
20191.43 ppb440.200 ppb - 2.20 ppb
20200.413 ppb440.160 ppb - 0.770 ppb
20211.09 ppb10100.130 ppb - 4.30 ppb
20222.18 ppb440.110 ppb - 4.40 ppb
20231.98 ppb440.160 ppb - 4.40 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
2018-08-15L7061691-11.60 ppb
2018-09-13L7072328-10.900 ppb
2018-09-13L7072328-25.20 ppb
2018-10-02L7075896-3ND
2018-10-11L7078128-30.300 ppb
2018-10-16L7078602-40.400 ppb
2018-10-16L7078602-70.400 ppb
2018-11-13L7084148-3ND
2018-12-11L7089480-30.200 ppb
2018-12-18L7091234-10.1000 ppb
2019-09-10L7159751-12.20 ppb
2019-09-10L7159751-22.00 ppb
2019-11-04L7171843-11.30 ppb
2019-11-04L7171843-20.200 ppb
2020-09-10630-7002-10.770 ppb
2020-09-10630-7002-20.460 ppb
2020-10-15630-8668-10.260 ppb
2020-10-15630-8668-20.160 ppb
2021-03-08630-14481-10.690 ppb
2021-04-06630-15633-10.180 ppb
2021-09-14630-21875-1-THM4.30 ppb
2021-09-14630-21875-2-THM4.10 ppb
2021-10-19630-23380-60.450 ppb
2021-10-19630-23380-50.270 ppb
2021-10-19630-23380-30.230 ppb
2021-10-19630-23380-20.330 ppb
2021-10-19630-23380-40.130 ppb
2021-10-19630-23380-10.230 ppb
2022-02-01630-26825-10.490 ppb
2022-09-06630-44631-1-THM4.40 ppb
2022-09-06630-44631-2-THM3.70 ppb
2022-10-11630-47222-10.110 ppb
2023-01-17630-53638-10.640 ppb
2023-09-07630-71543-14.40 ppb
2023-09-07630-71543-22.70 ppb
2023-10-03630-73292-10.160 ppb