Know Your Environment. Protect Your Health.

Bromoform

Pennsylvania American Norristown

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

201

Samples

0

Samples exceeding legal limit (MCL)

100

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.580 ppb4024ND - 2.20 ppb
20190.941 ppb3214ND - 4.50 ppb
20200.616 ppb3216ND - 2.90 ppb
20210.681 ppb3216ND - 1.80 ppb
20220.852 ppb3319ND - 2.90 ppb
20230.400 ppb3214ND - 1.50 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform is 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, harm to reproduction and child development, and change to fetal growth and development .

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-09381504011.30 ppb
2018-01-09381505012.20 ppb
2018-01-09381500011.50 ppb
2018-01-09381499012.00 ppb
2018-01-09381513011.30 ppb
2018-01-09381503011.20 ppb
2018-01-09381501011.30 ppb
2018-01-09381502011.90 ppb
2018-04-0339059801ND
2018-04-0339059901ND
2018-04-0339059301ND
2018-04-0339059201ND
2018-04-0339061101ND
2018-04-0339059601ND
2018-04-0339059401ND
2018-04-0339059501ND
2018-07-10401911010.700 ppb
2018-07-10401912010.700 ppb
2018-07-10401906011.000 ppb
2018-07-10401905011.000 ppb
2018-07-10401914010.600 ppb
2018-07-10401909010.600 ppb
2018-07-10401907010.600 ppb
2018-07-10401908010.700 ppb
2018-08-0940937701ND
2018-08-0940937801ND
2018-08-0940780501ND
2018-08-0940937301ND
2018-08-0940937901ND
2018-08-0940937601ND
2018-08-0940937401ND
2018-08-0940937501ND
2018-10-09413012010.600 ppb
2018-10-09413013010.600 ppb
2018-10-09413007010.600 ppb
2018-10-09413006010.500 ppb
2018-10-09413015010.600 ppb
2018-10-09413010010.500 ppb
2018-10-09413008010.600 ppb
2018-10-09413009010.600 ppb
2019-01-0942488601ND
2019-01-0942488701ND
2019-01-0942488101ND
2019-01-0942488001ND
2019-01-0942488901ND
2019-01-0942488401ND
2019-01-0942488201ND
2019-01-0942488301ND
2019-04-0343647201ND
2019-04-0343647301ND
2019-04-0343647401ND
2019-04-0343647101ND
2019-04-0343647501ND
2019-04-0343647601ND
2019-04-0343647701ND
2019-04-0343647801ND
2019-07-09450015010.700 ppb
2019-07-09450016011.30 ppb
2019-07-09450014011.000 ppb
2019-07-09450013010.900 ppb
2019-07-09450017010.700 ppb
2019-07-0945002201ND
2019-07-0945001901ND
2019-07-09450024010.800 ppb
2019-10-09468228013.80 ppb
2019-10-09468229014.50 ppb
2019-10-09468227012.00 ppb
2019-10-09468226014.40 ppb
2019-10-09468230013.20 ppb
2019-10-09468234011.50 ppb
2019-10-09468231011.70 ppb
2019-10-09468236013.60 ppb
2020-01-07ND
2020-01-07ND
2020-01-07ND
2020-01-07ND
2020-01-07ND
2020-01-07ND
2020-01-07ND
2020-01-07ND
2020-04-02ND
2020-04-02ND
2020-04-02ND
2020-04-02ND
2020-04-02ND
2020-04-02ND
2020-04-02ND
2020-04-02ND
2020-07-090.900 ppb
2020-07-090.900 ppb
2020-07-091.000 ppb
2020-07-090.700 ppb
2020-07-090.900 ppb
2020-07-092.90 ppb
2020-07-091.80 ppb
2020-07-092.60 ppb
2020-10-080.900 ppb
2020-10-081.20 ppb
2020-10-081.10 ppb
2020-10-081.40 ppb
2020-10-081.000 ppb
2020-10-080.600 ppb
2020-10-080.900 ppb
2020-10-080.900 ppb
2021-01-11ND
2021-01-11ND
2021-01-11ND
2021-01-11ND
2021-01-11ND
2021-01-11ND
2021-01-11ND
2021-01-11ND
2021-04-05ND
2021-04-05ND
2021-04-05ND
2021-04-05ND
2021-04-05ND
2021-04-05ND
2021-04-05ND
2021-04-05ND
2021-07-121.20 ppb
2021-07-121.10 ppb
2021-07-121.60 ppb
2021-07-121.20 ppb
2021-07-121.40 ppb
2021-07-121.50 ppb
2021-07-121.60 ppb
2021-07-121.60 ppb
2021-10-111.50 ppb
2021-10-131.80 ppb
2021-10-131.30 ppb
2021-10-131.60 ppb
2021-10-131.20 ppb
2021-10-131.000 ppb
2021-10-131.20 ppb
2021-10-131.000 ppb
2022-01-10ND
2022-01-10ND
2022-01-10ND
2022-01-10ND
2022-01-100.600 ppb
2022-01-10ND
2022-01-10ND
2022-01-100.500 ppb
2022-04-05ND
2022-04-050.600 ppb
2022-04-05ND
2022-04-05ND
2022-04-05ND
2022-04-05ND
2022-04-05ND
2022-04-05ND
2022-07-112.40 ppb
2022-07-111.90 ppb
2022-07-111.90 ppb
2022-07-112.30 ppb
2022-07-112.60 ppb
2022-07-112.40 ppb
2022-07-112.30 ppb
2022-07-112.90 ppb
2022-09-212.10 ppb
2022-10-100.700 ppb
2022-10-10ND
2022-10-100.800 ppb
2022-10-101.10 ppb
2022-10-101.000 ppb
2022-10-100.600 ppb
2022-10-100.700 ppb
2022-10-100.700 ppb
2023-01-09ND
2023-01-09ND
2023-01-09ND
2023-01-09ND
2023-01-09ND
2023-01-09ND
2023-01-09ND
2023-01-09ND
2023-04-03ND
2023-04-03ND
2023-04-03ND
2023-04-030.600 ppb
2023-04-03ND
2023-04-03ND
2023-04-03ND
2023-04-03ND
2023-07-101.000 ppb
2023-07-101.10 ppb
2023-07-101.40 ppb
2023-07-101.50 ppb
2023-07-101.20 ppb
2023-07-10ND
2023-07-100.600 ppb
2023-07-101.30 ppb
2023-10-090.700 ppb
2023-10-09ND
2023-10-090.700 ppb
2023-10-090.700 ppb
2023-10-09ND
2023-10-090.700 ppb
2023-10-090.700 ppb
2023-10-090.600 ppb