Know Your Environment. Protect Your Health.

Chloroform

Farmerville 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.

 

66

Samples

0

Samples exceeding legal limit (MCL)

45

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.188 ppb162ND - 1.50 ppb
20191.28 ppb1612ND - 3.40 ppb
20203.39 ppb97ND - 7.50 ppb
20215.54 ppb883.10 ppb - 8.00 ppb
20223.46 ppb98ND - 6.40 ppb
20234.91 ppb882.90 ppb - 7.00 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
2018-02-2235376198001ND
2018-02-2235376198002ND
2018-02-2235376198002ND
2018-02-2235376198001ND
2018-05-2335394581002ND
2018-05-2335394581001ND
2018-05-2335394581002ND
2018-05-2335394581001ND
2018-08-2035412798001ND
2018-08-2035412798002ND
2018-08-2035412798001ND
2018-08-2035412798002ND
2018-11-1935432388001ND
2018-11-1935432388001ND
2018-11-19354323880021.50 ppb
2018-11-19354323880021.50 ppb
2019-02-25354509660013.40 ppb
2019-02-25354509660021.30 ppb
2019-02-25354509660013.40 ppb
2019-02-25354509660021.30 ppb
2019-05-1335469328001ND
2019-05-1335469328002ND
2019-05-1335469328001ND
2019-05-1335469328002ND
2019-08-14354912130021.90 ppb
2019-08-14354912130011.60 ppb
2019-08-14354912130011.60 ppb
2019-08-14354912130021.90 ppb
2019-11-18355140820010.920 ppb
2019-11-18355140820021.10 ppb
2019-11-18355140820021.10 ppb
2019-11-18355140820010.920 ppb
2020-02-1835532445002ND
2020-02-18355324450013.20 ppb
2020-04-0935542956001ND
2020-05-21355519670013.20 ppb
2020-05-21355519670025.10 ppb
2020-08-10355703910013.00 ppb
2020-08-10355703910024.30 ppb
2020-11-09355919290027.50 ppb
2020-11-09355919290014.20 ppb
2021-02-08356112520014.30 ppb
2021-02-08356112520027.60 ppb
2021-05-18356349860015.40 ppb
2021-05-18356349860028.00 ppb
2021-08-09356551400013.10 ppb
2021-08-09356551400025.50 ppb
2021-11-29356805420015.20 ppb
2021-11-29356805420025.20 ppb
2022-02-07356966670023.60 ppb
2022-02-07356966670015.30 ppb
2022-03-09357029380014.00 ppb
2022-05-04357159700026.40 ppb
2022-05-04357159700013.70 ppb
2022-08-0335737789001ND
2022-08-03357377890021.20 ppb
2022-11-17357616140013.80 ppb
2022-11-17357616140023.10 ppb
2023-02-15357806930013.30 ppb
2023-02-15357806930025.90 ppb
2023-05-18358021270017.00 ppb
2023-05-18358021270025.40 ppb
2023-08-14358217000012.90 ppb
2023-08-14358217000023.60 ppb
2023-11-03358392560014.90 ppb
2023-11-03358392560026.30 ppb