Know Your Environment. Protect Your Health.

Chloroform

Town of Annetta Deer Creek

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.

 

56

Samples

0

Samples exceeding legal limit (MCL)

23

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.10 ppb83ND - 13.1 ppb
20191.78 ppb86ND - 3.42 ppb
20200.421 ppb102ND - 2.59 ppb
20210.423 ppb124ND - 1.76 ppb
20221.61 ppb93ND - 9.79 ppb
20230.806 ppb95ND - 1.80 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
2018-08-06Q1830996006ND
2018-08-06Q1830996002ND
2018-08-06Q1830996012ND
2018-08-06Q1830996007ND
2018-08-06Q18309960091.30 ppb
2018-12-03Q1849051001ND
2018-12-03Q18490510062.39 ppb
2018-12-03Q184905100713.1 ppb
2019-06-03Q19306770051.01 ppb
2019-06-03Q19306770072.90 ppb
2019-06-03Q1930677009ND
2019-06-03Q19306770112.88 ppb
2019-06-03Q1930677013ND
2019-06-03Q19306770152.50 ppb
2019-06-03Q19306770171.55 ppb
2019-06-03Q19306770363.42 ppb
2020-01-30Q20039340031.62 ppb
2020-04-21Q2015803014ND
2020-04-21Q2015803016ND
2020-04-21Q2015803018ND
2020-04-21Q2015803020ND
2020-04-21Q20158030222.59 ppb
2020-04-21Q2015803024ND
2020-08-11Q2031758002ND
2020-08-27Q2034434007ND
2020-10-14Q2040327003ND
2021-02-01Q21028570141.13 ppb
2021-02-01Q2102857012ND
2021-02-01Q2102857008ND
2021-02-01Q2102857006ND
2021-02-01Q2102857004ND
2021-02-01Q2102857010ND
2021-04-22Q2110415004ND
2021-04-22Q21104150081.76 ppb
2021-05-24Q2113349001ND
2021-05-24Q2113349003ND
2021-05-24Q21133490081.15 ppb
2021-08-10Q21211890011.04 ppb
2022-02-07Q22040150032.25 ppb
2022-03-10Q2208362003ND
2022-03-10Q2208362005ND
2022-03-10Q2208362007ND
2022-09-14Q22276760029.79 ppb
2022-11-17Q2234711008ND
2022-11-17Q2234711010ND
2022-11-17Q2234711012ND
2022-11-17Q22347110142.42 ppb
2023-09-21Q23410000011.35 ppb
2023-11-08Q2348107011ND
2023-11-08Q23481070131.29 ppb
2023-11-08Q2348107015ND
2023-11-08Q23481070171.65 ppb
2023-11-08Q2348107019ND
2023-11-08Q2348107021ND
2023-11-08Q23481070551.16 ppb
2023-11-08Q23481070571.80 ppb