Know Your Environment. Protect Your Health.

Bromoform

North Wales Water Authority

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.

 

225

Samples

0

Samples exceeding legal limit (MCL)

24

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.177 ppb357ND - 1.86 ppb
20190.178 ppb369ND - 1.70 ppb
20200.0637 ppb382ND - 1.80 ppb
2021ND360ND
20220.0718 ppb404ND - 0.989 ppb
20230.0608 ppb402ND - 1.33 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
2018-02-1220180597ND
2018-02-1220180598ND
2018-02-1220180599ND
2018-02-1220180600ND
2018-02-1220180601ND
2018-02-1220180602ND
2018-02-1220180603ND
2018-02-1220180604ND
2018-03-1320180956ND
2018-05-1420181890ND
2018-05-14201818910.537 ppb
2018-05-1420181892ND
2018-05-1420181893ND
2018-05-1420181894ND
2018-05-14201818950.506 ppb
2018-05-1420181896ND
2018-05-1420181897ND
2018-06-0520182148ND
2018-08-13201830970.726 ppb
2018-08-13201830980.770 ppb
2018-08-1320183099ND
2018-08-1320183100ND
2018-08-13201831010.710 ppb
2018-08-13201831021.86 ppb
2018-08-13201831031.08 ppb
2018-08-1320183104ND
2018-09-0420183373ND
2018-11-128113026-01ND
2018-11-128113026-02ND
2018-11-128113026-03ND
2018-11-128113026-04ND
2018-11-128113026-05ND
2018-11-128113026-06ND
2018-11-128113026-07ND
2018-11-128113026-08ND
2019-02-1120190552ND
2019-02-1120190553ND
2019-02-1120190554ND
2019-02-1120190555ND
2019-02-1120190556ND
2019-02-1120190557ND
2019-02-1120190558ND
2019-02-1120190559ND
2019-03-0520190857ND
2019-05-1320191796ND
2019-05-13201917970.507 ppb
2019-05-1320191798ND
2019-05-1320191799ND
2019-05-1320191800ND
2019-05-13201918010.529 ppb
2019-05-13201918020.522 ppb
2019-05-1320191803ND
2019-08-139083732-01ND
2019-08-139083732-02ND
2019-08-139083732-03ND
2019-08-139083732-04ND
2019-08-139083732-05ND
2019-08-139083732-061.70 ppb
2019-08-139083732-07REND
2019-08-139083732-08ND
2019-09-0320193443ND
2019-11-119113440-01ND
2019-11-11201944180.537 ppb
2019-11-11201944190.540 ppb
2019-11-1120194420ND
2019-11-11201944220.513 ppb
2019-11-11201944230.866 ppb
2019-11-11201944240.680 ppb
2019-11-1120194425ND
2019-12-039121679-01ND
2019-12-0320194748ND
2020-02-10ND
2020-02-10ND
2020-02-10ND
2020-02-10ND
2020-02-10ND
2020-02-10ND
2020-02-10ND
2020-02-10ND
2020-05-11ND
2020-05-11ND
2020-05-11ND
2020-05-11ND
2020-05-11ND
2020-05-11ND
2020-05-11ND
2020-05-11ND
2020-06-0222418615.00ND
2020-06-02ND
2020-08-10ND
2020-08-10ND
2020-08-10ND
2020-08-10ND
2020-08-10ND
2020-08-101.80 ppb
2020-08-10ND
2020-08-10ND
2020-09-0123001549.00ND
2020-09-01ND
2020-11-11ND
2020-11-11ND
2020-11-11ND
2020-11-11ND
2020-11-11ND
2020-11-110.622 ppb
2020-11-11ND
2020-11-11ND
2020-12-0123539423.00ND
2020-12-01ND
2021-02-10ND
2021-02-10ND
2021-02-10ND
2021-02-10ND
2021-02-10ND
2021-02-10ND
2021-02-10ND
2021-02-10ND
2021-03-0224062429.00ND
2021-03-02ND
2021-05-12ND
2021-05-12ND
2021-05-12ND
2021-05-12ND
2021-05-12ND
2021-05-12ND
2021-05-12ND
2021-05-12ND
2021-06-0124640242.00ND
2021-06-01ND
2021-08-11ND
2021-08-11ND
2021-08-11ND
2021-08-11ND
2021-08-11ND
2021-08-11ND
2021-08-11ND
2021-08-11ND
2021-11-10ND
2021-11-10ND
2021-11-10ND
2021-11-10ND
2021-11-10ND
2021-11-10ND
2021-11-10ND
2021-11-10ND
2022-02-10ND
2022-02-10ND
2022-02-10ND
2022-02-10ND
2022-02-10ND
2022-02-10ND
2022-02-10ND
2022-02-10ND
2022-03-0126289345.00ND
2022-03-01ND
2022-05-11ND
2022-05-11ND
2022-05-11ND
2022-05-11ND
2022-05-11ND
2022-05-11ND
2022-05-11ND
2022-05-11ND
2022-06-0726844674.00ND
2022-06-07ND
2022-08-100.526 ppb
2022-08-100.543 ppb
2022-08-10ND
2022-08-10ND
2022-08-10ND
2022-08-100.989 ppb
2022-08-100.815 ppb
2022-08-10ND
2022-09-2027443466.00ND
2022-09-20ND
2022-11-09ND
2022-11-09ND
2022-11-09ND
2022-11-09ND
2022-11-09ND
2022-11-09ND
2022-11-09ND
2022-11-09ND
2022-12-0628000372.00ND
2022-12-06ND
2023-02-08ND
2023-02-08ND
2023-02-08ND
2023-02-08ND
2023-02-08ND
2023-02-08ND
2023-02-08ND
2023-02-08ND
2023-03-0728523024.00ND
2023-03-07ND
2023-05-10ND
2023-05-10ND
2023-05-10ND
2023-05-10ND
2023-05-10ND
2023-05-10ND
2023-05-10ND
2023-05-10ND
2023-06-1929110369.00ND
2023-06-19ND
2023-08-09ND
2023-08-09ND
2023-08-09ND
2023-08-09ND
2023-08-09ND
2023-08-091.33 ppb
2023-08-09ND
2023-08-09ND
2023-09-1229701920.00ND
2023-09-12ND
2023-11-09ND
2023-11-09ND
2023-11-09ND
2023-11-09ND
2023-11-09ND
2023-11-091.10 ppb
2023-11-09ND
2023-11-09ND
2023-11-1730073322.00ND
2023-11-17ND