Know Your Environment. Protect Your Health.

Bromoform

Quarryville Borough

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

15

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.331 ppb84ND - 1.30 ppb
20190.513 ppb82ND - 2.10 ppb
20200.538 ppb83ND - 1.70 ppb
20210.638 ppb82ND - 3.90 ppb
20220.763 ppb84ND - 2.70 ppb
20230.350 ppb82ND - 1.60 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
2018-01-117121163-02ND
2018-01-117121163-01ND
2018-04-098033245-010.0500 ppb
2018-04-098033245-020.500 ppb
2018-07-318075575-01REND
2018-07-318075575-02RE0.800 ppb
2018-10-118093466-01ND
2018-10-118093466-021.30 ppb
2019-01-108123564-01ND
2019-01-108123564-02ND
2019-04-119032841-01ND
2019-04-119032841-02ND
2019-07-099063179-01ND
2019-07-099063179-022.10 ppb
2019-10-109093308-022.00 ppb
2019-10-109093308-01ND
2020-01-09ND
2020-01-09ND
2020-04-091.40 ppb
2020-04-09ND
2020-07-09ND
2020-07-231.70 ppb
2020-10-08ND
2020-10-081.20 ppb
2021-01-07ND
2021-01-07ND
2021-04-08ND
2021-04-081.20 ppb
2021-07-083.90 ppb
2021-07-08ND
2021-10-07ND
2021-10-07ND
2022-01-06ND
2022-01-06ND
2022-04-07ND
2022-04-071.000 ppb
2022-07-072.70 ppb
2022-07-070.600 ppb
2022-10-06ND
2022-10-061.80 ppb
2023-01-12ND
2023-01-12ND
2023-04-06ND
2023-04-06ND
2023-07-06ND
2023-07-061.60 ppb
2023-10-12ND
2023-10-121.20 ppb