Know Your Environment. Protect Your Health.

Bromoform

Sleepy Hollow

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)

26

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.213 ppb81ND - 1.70 ppb
20190.477 ppb84ND - 1.48 ppb
20200.733 ppb85ND - 1.70 ppb
20211.11 ppb86ND - 2.29 ppb
20220.476 ppb84ND - 1.38 ppb
20230.588 ppb86ND - 0.923 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
2018-03-218033702-01ND
2018-03-218033702-02ND
2018-06-208063805-01ND
2018-06-208063805-02ND
2018-09-198093536-01ND
2018-09-198093536-02ND
2018-12-198123618-02ND
2018-12-198123618-011.70 ppb
2019-03-209033378-02ND
2019-03-209033378-010.810 ppb
2019-06-269065094-01ND
2019-06-269065094-02ND
2019-09-189093659-020.803 ppb
2019-09-189093659-011.48 ppb
2019-12-189123769-02ND
2019-12-189123769-010.719 ppb
2020-03-180033368-02ND
2020-03-180033368-011.70 ppb
2020-06-170063689-011.27 ppb
2020-06-170063689-020.532 ppb
2020-09-160093403-02ND
2020-09-160093403-011.07 ppb
2020-12-160123270-02ND
2020-12-160123270-011.29 ppb
2021-03-17EC03396-02ND
2021-03-17EC03396-011.73 ppb
2021-06-23EF04825-011.03 ppb
2021-06-23EF04825-021.05 ppb
2021-09-22EI04366-012.29 ppb
2021-09-22EI04366-020.962 ppb
2021-12-15EL03022-011.78 ppb
2021-12-15EL03022-02ND
2022-03-16FC02962-02ND
2022-03-16FC02962-010.746 ppb
2022-06-22FF04381-011.14 ppb
2022-06-22FF04381-02ND
2022-09-21FI04080-01ND
2022-09-21FI04080-020.545 ppb
2022-12-21FL04161-011.38 ppb
2022-12-21FL04161-02ND
2023-03-15GC02804-010.923 ppb
2023-03-15GC02804-02ND
2023-06-21GF03862-010.841 ppb
2023-06-21GF03862-020.692 ppb
2023-09-20GI03652-010.673 ppb
2023-09-20GI03652-02ND
2023-12-20GL03791-010.826 ppb
2023-12-20GL03791-020.752 ppb