Know Your Environment. Protect Your Health.

Bromoform

St Charles Water District 1 East Bank

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.

 

224

Samples

0

Samples exceeding legal limit (MCL)

14

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND320ND
2019ND640ND
20200.0766 ppb326ND - 0.440 ppb
20210.0259 ppb322ND - 0.450 ppb
20220.188 ppb3210ND - 0.900 ppb
20230.174 ppb329ND - 0.910 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
2018-03-1335380152001ND
2018-03-1335380152002ND
2018-03-1335380152003ND
2018-03-1335380152004ND
2018-03-1335380152001ND
2018-03-1335380152002ND
2018-03-1335380152003ND
2018-03-1335380152004ND
2018-06-1235398121001ND
2018-06-1235398121002ND
2018-06-1235398121003ND
2018-06-1235398121004ND
2018-06-1235398121001ND
2018-06-1235398121002ND
2018-06-1235398121003ND
2018-06-1235398121004ND
2018-09-2035419460001ND
2018-09-2035419460002ND
2018-09-2035419460003ND
2018-09-2035419460004ND
2018-09-2035419460001ND
2018-09-2035419460002ND
2018-09-2035419460003ND
2018-09-2035419460004ND
2018-12-1335437252001ND
2018-12-1335437252002ND
2018-12-1335437252003ND
2018-12-1335437252004ND
2018-12-1335437252001ND
2018-12-1335437252002ND
2018-12-1335437252003ND
2018-12-1335437252004ND
2019-03-1435454705001ND
2019-03-1435454705002ND
2019-03-1435454705003ND
2019-03-1435454705004ND
2019-03-1435454705001ND
2019-03-1435454705002ND
2019-03-1435454705003ND
2019-03-1435454705004ND
2019-06-1235475693001ND
2019-06-1235475693002ND
2019-06-1235475693003ND
2019-06-1235475693004ND
2019-06-1235475693001ND
2019-06-1235475693002ND
2019-06-1235475693003ND
2019-06-1235475693004ND
2019-09-0535495203001ND
2019-09-0535495203002ND
2019-09-0535495203003ND
2019-09-0535495203004ND
2019-09-0535495203005ND
2019-09-0535495203006ND
2019-09-0535495203007ND
2019-09-0535495203008ND
2019-09-0535495203001ND
2019-09-0535495203002ND
2019-09-0535495203003ND
2019-09-0535495203004ND
2019-09-0535495203005ND
2019-09-0535495203006ND
2019-09-0535495203007ND
2019-09-0535495203008ND
2019-10-1035504423001ND
2019-10-1035504423002ND
2019-10-1035504423003ND
2019-10-1035504423004ND
2019-10-1035504423005ND
2019-10-1035504423006ND
2019-10-1035504423007ND
2019-10-1035504423008ND
2019-10-1035504423001ND
2019-10-1035504423002ND
2019-10-1035504423003ND
2019-10-1035504423004ND
2019-10-1035504423005ND
2019-10-1035504423006ND
2019-10-1035504423007ND
2019-10-1035504423008ND
2019-12-1035518126001ND
2019-12-1035518126002ND
2019-12-1035518126003ND
2019-12-1035518126004ND
2019-12-1035518126005ND
2019-12-1035518126006ND
2019-12-1035518126007ND
2019-12-1035518126008ND
2019-12-1035518126001ND
2019-12-1035518126002ND
2019-12-1035518126003ND
2019-12-1035518126004ND
2019-12-1035518126005ND
2019-12-1035518126006ND
2019-12-1035518126007ND
2019-12-1035518126008ND
2020-03-0535535524001ND
2020-03-0535535524002ND
2020-03-0535535524003ND
2020-03-0535535524004ND
2020-03-0535535524005ND
2020-03-0535535524006ND
2020-03-0535535524007ND
2020-03-0535535524008ND
2020-06-1835557773001ND
2020-06-1835557773002ND
2020-06-1835557773003ND
2020-06-1835557773004ND
2020-06-1835557773005ND
2020-06-1835557773006ND
2020-06-1835557773007ND
2020-06-1835557773008ND
2020-09-1835579010001ND
2020-09-1835579010002ND
2020-09-18355790100030.400 ppb
2020-09-18355790100040.420 ppb
2020-09-18355790100050.420 ppb
2020-09-18355790100060.440 ppb
2020-09-18355790100070.390 ppb
2020-09-18355790100080.380 ppb
2020-12-1135598546001ND
2020-12-1135598546002ND
2020-12-1135598546003ND
2020-12-1135598546004ND
2020-12-1135598546005ND
2020-12-1135598546006ND
2020-12-1135598546007ND
2020-12-1135598546008ND
2021-03-1135618677001ND
2021-03-1135618677002ND
2021-03-1135618677003ND
2021-03-1135618677004ND
2021-03-1135618677005ND
2021-03-1135618677006ND
2021-03-1135618677007ND
2021-03-1135618677008ND
2021-06-0935639743001ND
2021-06-0935639743002ND
2021-06-0935639743003ND
2021-06-0935639743004ND
2021-06-0935639743005ND
2021-06-0935639743006ND
2021-06-0935639743007ND
2021-06-0935639743008ND
2021-09-2235666065001ND
2021-09-2235666065002ND
2021-09-2235666065003ND
2021-09-2235666065004ND
2021-09-2235666065005ND
2021-09-2235666065006ND
2021-09-2235666065007ND
2021-09-2235666065008ND
2021-12-2135685949001ND
2021-12-2135685949002ND
2021-12-2135685949003ND
2021-12-2135685949004ND
2021-12-21356859490050.380 ppb
2021-12-2135685949006ND
2021-12-2135685949007ND
2021-12-21356859490080.450 ppb
2022-03-0235701560001ND
2022-03-0235701560002ND
2022-03-0235701560003ND
2022-03-0235701560004ND
2022-03-0235701560005ND
2022-03-0235701560006ND
2022-03-0235701560007ND
2022-03-0235701560008ND
2022-06-0935725756001ND
2022-06-0935725756002ND
2022-06-0935725756003ND
2022-06-0935725756004ND
2022-06-0935725756005ND
2022-06-0935725756006ND
2022-06-0935725756007ND
2022-06-0935725756008ND
2022-09-1535747218001ND
2022-09-15357472180020.740 ppb
2022-09-1535747218003ND
2022-09-1535747218004ND
2022-09-1535747218005ND
2022-09-15357472180060.860 ppb
2022-09-15357472180070.900 ppb
2022-09-15357472180080.860 ppb
2022-12-15357672030010.360 ppb
2022-12-1535767203002ND
2022-12-1535767203003ND
2022-12-15357672030040.510 ppb
2022-12-15357672030050.430 ppb
2022-12-15357672030060.400 ppb
2022-12-15357672030070.530 ppb
2022-12-15357672030080.440 ppb
2023-03-1435785900001ND
2023-03-1435785900002ND
2023-03-1435785900003ND
2023-03-1435785900004ND
2023-03-1435785900005ND
2023-03-1435785900006ND
2023-03-1435785900007ND
2023-03-1435785900008ND
2023-06-0935805553001ND
2023-06-0935805553002ND
2023-06-0935805553003ND
2023-06-0935805553004ND
2023-06-0935805553005ND
2023-06-0935805553006ND
2023-06-0935805553007ND
2023-06-0935805553008ND
2023-09-0635826117001ND
2023-09-0635826117002ND
2023-09-0635826117003ND
2023-09-0635826117004ND
2023-09-0635826117005ND
2023-09-0635826117006ND
2023-09-0635826117007ND
2023-09-06358261170080.400 ppb
2023-12-19358493650010.720 ppb
2023-12-19358493650020.620 ppb
2023-12-19358493650030.910 ppb
2023-12-19358493650040.670 ppb
2023-12-19358493650050.520 ppb
2023-12-19358493650060.550 ppb
2023-12-19358493650070.630 ppb
2023-12-19358493650080.550 ppb