Know Your Environment. Protect Your Health.

Bromoform

Creston Water Supply

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)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND80ND
2020ND80ND
2021ND80ND
2022ND80ND
20230.475 ppb84ND - 1.30 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
2018-02-12OE622748ND
2018-02-12OE622747ND
2018-05-16OE659753ND
2018-05-16OE659752ND
2018-08-20OE702823ND
2018-08-20OE702824ND
2018-11-06OE737675ND
2018-11-06OE737676ND
2019-02-11OE770437ND
2019-02-11OE770438ND
2019-05-07OE806185ND
2019-05-07OE806186ND
2019-08-12OE849063ND
2019-08-13OE849064ND
2019-11-12OE893103ND
2019-11-12OE893104ND
2020-02-04OE925770ND
2020-02-04OE925771ND
2020-05-05OE996715ND
2020-05-05OE996716ND
2020-08-10OE1169084ND
2020-08-10OE1169085ND
2020-11-17OE1434392ND
2020-11-17OE1434393ND
2021-02-09OE1584400ND
2021-02-09OE1584401ND
2021-05-04OE1685211ND
2021-05-04OE1685212ND
2021-08-09OE1789575ND
2021-08-09OE1789576ND
2021-11-15OE1934311ND
2021-11-15OE1934312ND
2022-02-07OE2038568ND
2022-02-07OE2038569ND
2022-05-04OE2093771ND
2022-05-04OE2093772ND
2022-08-02OE2147289ND
2022-08-02OE2147290ND
2022-11-01OE2199511ND
2022-11-01OE2199512ND
2023-02-06OE2238690ND
2023-02-06OE2238691ND
2023-05-01OE2274236ND
2023-05-01OE2274235ND
2023-08-08OE23195371.30 ppb
2023-08-08OE23195381.10 ppb
2023-11-13OE23627760.700 ppb
2023-11-13OE23627770.700 ppb