Know Your Environment. Protect Your Health.

Bromoform

La Harpe, 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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.618 ppb43ND - 0.910 ppb
2019ND40ND
20200.315 ppb42ND - 0.710 ppb
20210.400 ppb31ND - 1.20 ppb
20228.78 ppb42ND - 34.0 ppb
20231.58 ppb440.550 ppb - 2.90 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
2018-01-169073790.780 ppb
2018-04-10937853ND
2018-07-1710072440.780 ppb
2018-10-2310647180.910 ppb
2019-01-151105959ND
2019-04-091138486ND
2019-07-241209237ND
2019-10-151259667ND
2020-01-141309739ND
2020-04-211359987ND
2020-07-1414412660.710 ppb
2020-10-1315951230.550 ppb
2021-01-0517312751.20 ppb
2021-04-131817108ND
2021-10-051979752ND
2022-01-0421075371.10 ppb
2022-04-122235620ND
2022-07-052291807ND
2022-10-04237084534.0 ppb
2023-01-1024297040.550 ppb
2023-04-1124813410.860 ppb
2023-07-1125341302.00 ppb
2023-10-0325859732.90 ppb