Know Your Environment. Protect Your Health.

Chloroform

Buena Vista Bethel Special Utility District

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.

 

74

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND120ND
2019ND120ND
20200.823 ppb123ND - 5.86 ppb
20210.721 ppb141ND - 10.1 ppb
20221.87 ppb122ND - 20.7 ppb
20231.28 ppb121ND - 15.4 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
2018-02-22Q1807470002ND
2018-02-22Q1807470001ND
2018-05-25Q1821166002ND
2018-05-25Q1821166001ND
2018-08-27Q1834177005ND
2018-08-27Q1834177006ND
2018-08-27Q1834177008ND
2018-08-27Q1834177011ND
2018-09-11Q1836194001ND
2018-11-26Q1847685001ND
2018-11-26Q1847685006ND
2018-12-03Q1848945001ND
2019-02-27Q1908361001ND
2019-02-27Q1908361002ND
2019-05-08Q1923157001ND
2019-05-08Q1923157002ND
2019-08-22Q1958603001ND
2019-08-22Q1958603002ND
2019-11-19Q1977641012ND
2019-11-19Q1977641005ND
2019-11-19Q1977641010ND
2019-11-19Q1977641008ND
2019-11-19Q1977641006ND
2019-11-19Q1977641004ND
2020-03-16Q2010568017ND
2020-03-16Q20105680181.84 ppb
2020-03-16Q20105680192.18 ppb
2020-03-16Q2010568021ND
2020-03-16Q2010568030ND
2020-03-16Q2010568036ND
2020-06-03Q20220220015.86 ppb
2020-06-03Q2022022002ND
2020-09-08Q2035416001ND
2020-09-08Q2035416002ND
2020-11-18Q2045698001ND
2020-11-18Q2045698002ND
2021-03-15Q2106664002ND
2021-03-15Q210666400110.1 ppb
2021-06-21Q2116030005ND
2021-06-21Q2116030007ND
2021-06-21Q2116030009ND
2021-06-21Q2116030011ND
2021-06-21Q2116030018ND
2021-06-21Q2116030019ND
2021-08-24Q2123005001ND
2021-08-24Q2123005002ND
2021-08-24Q2123005003ND
2021-11-10Q2131609001ND
2021-11-10Q2131609002ND
2021-11-10Q2131609003ND
2022-03-28Q2209624020ND
2022-03-28Q2209624018ND
2022-03-28Q2209624016ND
2022-03-28Q2209624013ND
2022-03-28Q2209624012ND
2022-03-28Q2209624014ND
2022-05-25Q2215208001ND
2022-05-25Q2215208002ND
2022-08-16Q22240490011.71 ppb
2022-08-16Q2224049002ND
2022-12-01Q223592400120.7 ppb
2022-12-01Q2235924002ND
2023-03-08Q2309172002ND
2023-03-08Q230917200115.4 ppb
2023-05-18Q2318770002ND
2023-06-07Q2321454001ND
2023-09-13Q2339410005ND
2023-09-13Q2339410009ND
2023-09-13Q2339410010ND
2023-11-07Q2348144004ND
2023-11-07Q2348144006ND
2023-11-07Q2348144008ND
2023-11-07Q2348144026ND
2023-11-07Q2348144030ND