Know Your Environment. Protect Your Health.

Chloroform

Hardyston Township Municipal Utilities Authority

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.514 ppb76ND - 2.00 ppb
20191.23 ppb330.1000 ppb - 2.70 ppb
20200.467 ppb32ND - 0.800 ppb
20210.243 ppb41ND - 0.970 ppb
20220.853 ppb32ND - 1.89 ppb
20230.713 ppb32ND - 1.46 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
2018-03-20L7010368-30.400 ppb
2018-05-15L7025940-2ND
2018-06-20L7042368-40.200 ppb
2018-08-14L7061476-12.00 ppb
2018-08-14L7061476-20.600 ppb
2018-09-12L7071987-10.200 ppb
2018-12-18L7089323-30.200 ppb
2019-03-06L7108097-10.1000 ppb
2019-08-07L7152158-20.900 ppb
2019-08-07L7152158-12.70 ppb
2020-06-26200626034-01ND
2020-08-26200826055-010.800 ppb
2020-08-26200826055-020.600 ppb
2021-07-21210721105-02ND
2021-07-21210721105-07ND
2021-08-17210817082-060.970 ppb
2021-08-17210817082-05ND
2022-08-23220823076-051.89 ppb
2022-08-23220823076-040.670 ppb
2022-09-13220913061-04ND
2023-08-23230823087-021.46 ppb
2023-08-23230823087-010.680 ppb
2023-09-12230912085-06ND