Know Your Environment. Protect Your Health.

Chloroform

Tuscola-taylor County Water Control and Improvement District 1

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.448 ppb82ND - 2.14 ppb
20191.37 ppb87ND - 2.19 ppb
20200.130 ppb81ND - 1.04 ppb
2021ND80ND
20220.321 ppb82ND - 1.42 ppb
2023ND80ND

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
2018-03-08Q1809709002ND
2018-03-08Q1809709001ND
2018-06-26Q1825359003ND
2018-06-26Q1825359002ND
2018-08-07Q1831779001ND
2018-08-07Q1831779002ND
2018-11-27Q18479460012.14 ppb
2018-11-27Q18479460021.44 ppb
2019-03-19Q19115940011.41 ppb
2019-03-19Q19115940021.16 ppb
2019-06-03Q19307180022.13 ppb
2019-06-03Q19307180031.33 ppb
2019-08-27Q19600970021.63 ppb
2019-08-27Q19600970012.19 ppb
2019-12-10Q1979583001ND
2019-12-10Q19795830021.08 ppb
2020-03-18Q2012034001ND
2020-03-18Q2012034002ND
2020-06-01Q20216990021.04 ppb
2020-06-01Q2021699003ND
2020-07-28Q2029424001ND
2020-07-28Q2029424002ND
2020-12-01Q2047538001ND
2020-12-01Q2047538002ND
2021-01-27Q2102013001ND
2021-01-27Q2102013002ND
2021-06-07Q2114603001ND
2021-06-07Q2114603002ND
2021-09-14Q2125069001ND
2021-09-14Q2125069002ND
2021-12-21Q2136055001ND
2021-12-21Q2136055002ND
2022-03-10Q2208371001ND
2022-03-10Q2208371002ND
2022-06-07Q2215901002ND
2022-06-07Q2215901003ND
2022-09-13Q2227199001ND
2022-09-13Q2227199002ND
2022-12-12Q22371120011.42 ppb
2022-12-12Q22371120021.15 ppb
2023-03-06Q2308692001ND
2023-03-06Q2308692002ND
2023-06-13Q2322427001ND
2023-06-13Q2322427002ND
2023-08-29Q2337354001ND
2023-08-29Q2337354002ND
2023-11-29Q2350791001ND
2023-11-29Q2350791002ND