Know Your Environment. Protect Your Health.

Chloroform

Aqua Pa Hatboro

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.

 

132

Samples

0

Samples exceeding legal limit (MCL)

73

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20185.63 ppb4024ND - 40.8 ppb
20193.88 ppb2816ND - 25.4 ppb
20204.75 ppb168ND - 31.4 ppb
20213.86 ppb166ND - 16.3 ppb
20224.46 ppb166ND - 26.4 ppb
202315.5 ppb1613ND - 45.9 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
2018-01-03AF727011.60 ppb
2018-01-03AF727011.60 ppb
2018-01-03AF727021.80 ppb
2018-01-03AF727021.80 ppb
2018-01-03AF727030.700 ppb
2018-01-03AF727030.700 ppb
2018-01-03AF72704ND
2018-01-03AF72704ND
2018-04-04AF8040112.3 ppb
2018-04-04AF8040112.3 ppb
2018-04-04AF80402ND
2018-04-04AF80402ND
2018-04-04AF80403ND
2018-04-04AF80403ND
2018-04-25AF8224121.0 ppb
2018-04-25AF8224121.0 ppb
2018-07-03AF8859940.8 ppb
2018-07-03AF8859940.8 ppb
2018-07-03AF886020.500 ppb
2018-07-03AF886020.500 ppb
2018-07-03AF88600ND
2018-07-03AF88600ND
2018-07-03AF88601ND
2018-07-03AF88601ND
2018-07-31AF911643.60 ppb
2018-07-31AF911643.60 ppb
2018-07-31AF9116521.6 ppb
2018-07-31AF9116521.6 ppb
2018-07-31AF911660.900 ppb
2018-07-31AF911660.900 ppb
2018-07-31AF91167ND
2018-07-31AF91167ND
2018-10-03AF971867.20 ppb
2018-10-03AF971867.20 ppb
2018-10-03AF971890.500 ppb
2018-10-03AF971890.500 ppb
2018-10-03AF97187ND
2018-10-03AF97187ND
2018-10-03AF97188ND
2018-10-03AF97188ND
2019-01-02AG0508411.3 ppb
2019-01-02AG0508411.3 ppb
2019-01-02AG050870.500 ppb
2019-01-02AG050870.500 ppb
2019-01-02AG05085ND
2019-01-02AG05085ND
2019-01-02AG050860.500 ppb
2019-01-02AG050860.500 ppb
2019-04-03AG130954.70 ppb
2019-04-03AG130954.70 ppb
2019-04-03AG130981.000 ppb
2019-04-03AG130981.000 ppb
2019-04-03AG13096ND
2019-04-03AG13096ND
2019-04-03AG13097ND
2019-04-03AG13097ND
2019-07-03AG2251525.4 ppb
2019-07-03AG2251525.4 ppb
2019-07-03AG22508ND
2019-07-03AG22508ND
2019-07-03AG22506ND
2019-07-03AG22506ND
2019-07-03AG22507ND
2019-07-03AG22507ND
2019-10-02AG343656.90 ppb
2019-10-02AG343681.70 ppb
2019-10-02AG3436612.6 ppb
2019-10-02AG343670.500 ppb
2020-01-033.10 ppb
2020-01-031.80 ppb
2020-01-030.800 ppb
2020-01-03ND
2020-04-0113.6 ppb
2020-04-01ND
2020-04-01ND
2020-04-01ND
2020-07-0131.4 ppb
2020-07-011.50 ppb
2020-07-01ND
2020-07-01ND
2020-10-0718.9 ppb
2020-10-074.90 ppb
2020-10-07ND
2020-10-07ND
2021-01-067.70 ppb
2021-01-061.000 ppb
2021-01-06ND
2021-01-06ND
2021-04-0711.0 ppb
2021-04-0710.2 ppb
2021-04-07ND
2021-04-07ND
2021-07-0215.5 ppb
2021-07-02ND
2021-07-02ND
2021-07-02ND
2021-10-0616.3 ppb
2021-10-06ND
2021-10-06ND
2021-10-06ND
2022-01-0513.7 ppb
2022-01-05ND
2022-01-05ND
2022-01-05ND
2022-04-0614.1 ppb
2022-04-060.500 ppb
2022-04-060.500 ppb
2022-04-06ND
2022-07-0626.4 ppb
2022-07-06ND
2022-07-06ND
2022-07-06ND
2022-10-0516.2 ppb
2022-10-05ND
2022-10-05ND
2022-10-05ND
2023-01-1114.4 ppb
2023-01-1113.2 ppb
2023-01-111.50 ppb
2023-01-115.90 ppb
2023-04-1218.7 ppb
2023-04-125.80 ppb
2023-04-12ND
2023-04-12ND
2023-07-1242.5 ppb
2023-07-1245.9 ppb
2023-07-1219.0 ppb
2023-07-120.500 ppb
2023-10-1130.3 ppb
2023-10-1126.9 ppb
2023-10-1123.8 ppb
2023-10-11ND