Know Your Environment. Protect Your Health.

Chloroform

Trail Ridge Condominiums

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.250 ppb41ND - 1.000 ppb
20190.550 ppb21ND - 1.10 ppb
20200.593 ppb32ND - 1.08 ppb
20210.200 ppb51ND - 1.000 ppb
20220.600 ppb21ND - 1.20 ppb
20232.70 ppb220.900 ppb - 4.50 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 Result
2018-05-29ND
2018-05-29ND
2018-05-29ND
2018-05-291.000 ppb
2019-05-311.10 ppb
2019-05-31ND
2020-05-28ND
2020-05-280.700 ppb
2020-08-141.08 ppb
2021-05-06ND
2021-05-06ND
2021-05-061.000 ppb
2021-05-06ND
2021-05-13ND
2022-06-141.20 ppb
2022-06-14ND
2023-04-270.900 ppb
2023-08-024.50 ppb