Know Your Environment. Protect Your Health.

Chloroform

City of Jersey Village

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.

 

60

Samples

0

Samples exceeding legal limit (MCL)

48

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201819.7 ppb109ND - 50.0 ppb
20195.99 ppb106ND - 22.8 ppb
202011.6 ppb109ND - 18.1 ppb
202113.3 ppb107ND - 29.8 ppb
202212.2 ppb10102.50 ppb - 21.5 ppb
202313.2 ppb107ND - 23.5 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
2018-03-12AE1782625.1 ppb
2018-03-12AE1782523.9 ppb
2018-06-11AE2919421.4 ppb
2018-06-11AE2921024.4 ppb
2018-07-20AE341121.20 ppb
2018-07-20AE341131.30 ppb
2018-07-20AE3415350.0 ppb
2018-07-20AE3415548.0 ppb
2018-10-03AE425231.40 ppb
2018-10-03AE42528ND
2019-01-29AE51888ND
2019-01-29AE51910ND
2019-01-29AE519771.80 ppb
2019-04-01AE60662ND
2019-04-01AE60665ND
2019-07-19AE752961.20 ppb
2019-07-19AE752851.20 ppb
2019-10-03AE8563616.9 ppb
2019-10-03AE8566522.8 ppb
2019-10-03AE8568616.0 ppb
2020-02-04AE9680612.9 ppb
2020-02-04AE9680913.2 ppb
2020-02-04AE96835ND
2020-02-04AE968433.90 ppb
2020-04-14AF0661718.1 ppb
2020-04-14AF0661817.5 ppb
2020-07-10AF1914012.7 ppb
2020-07-10AF1914114.2 ppb
2020-10-09AF3017411.6 ppb
2020-10-09AF3017712.3 ppb
2021-01-27AF4129516.7 ppb
2021-01-27AF413731.60 ppb
2021-01-27AF4129616.6 ppb
2021-01-27AF41371ND
2021-04-07AF49350ND
2021-04-07AF49351ND
2021-08-04AF6474729.8 ppb
2021-08-04AF6474829.3 ppb
2021-10-25AF7449319.8 ppb
2021-10-25AF7451619.0 ppb
2022-01-13AF8018111.4 ppb
2022-01-13AF8018211.5 ppb
2022-01-13AF8022011.0 ppb
2022-01-13AF802222.80 ppb
2022-04-08AF9259918.6 ppb
2022-04-08AF9260521.5 ppb
2022-07-05AG0323715.4 ppb
2022-07-05AG0324014.5 ppb
2022-10-03AG1567813.0 ppb
2022-10-03AG156792.50 ppb
2023-02-28AG30809ND
2023-02-28AG30810ND
2023-04-04AG3531519.0 ppb
2023-04-04AG3531922.6 ppb
2023-04-04AG35407ND
2023-08-22AG5345423.5 ppb
2023-08-22AG5345523.1 ppb
2023-08-22AG5350910.00 ppb
2023-10-06AG5886717.7 ppb
2023-10-06AG5887216.3 ppb