Know Your Environment. Protect Your Health.

Bromoform

Ilwaco Water Department City Of

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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

13

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.500 ppb41ND - 2.00 ppb
20190.375 ppb41ND - 1.50 ppb
2020N/A00N/A
20211.25 ppb43ND - 2.50 ppb
20221.44 ppb660.540 ppb - 2.80 ppb
20230.803 ppb32ND - 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
2018-01-17ND
2018-04-19ND
2018-08-15ND
2018-10-022.00 ppb
2019-03-29ND
2019-06-04ND
2019-08-071.50 ppb
2019-12-10ND
2021-03-0240878352.50 ppb
2021-06-0141294241.70 ppb
2021-09-0741816260.780 ppb
2021-12-294226039ND
2022-03-0242580262.80 ppb
2022-06-1443034760.700 ppb
2022-07-1843231451.50 ppb
2022-09-0743611821.60 ppb
2022-09-0743593271.50 ppb
2022-12-0643916050.540 ppb
2023-03-074424398ND
2023-10-0445288451.50 ppb
2023-12-0545628800.910 ppb