Know Your Environment. Protect Your Health.

Bromate

Marais Des Cygnes Public Utility Authority

Bromate is a carcinogenic disinfection byproduct formed when source waters containing bromide are treated with ozonation or sodium hypochlorite. Studies of laboratory animals show that bromate damages DNA and causes cancer in multiple organs. Click here to read more about disinfection byproducts.

 

72

Samples

1

Samples exceeding legal limit (MCL)

20

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.923 ppb122ND - 5.54 ppb
2019ND120ND
20203.80 ppb124ND - 22.5 ppb
20212.14 ppb128ND - 4.22 ppb
20220.985 ppb123ND - 5.86 ppb
20230.643 ppb123ND - 2.92 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for bromate was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL): 10 ppb

The legal limit for bromate, established in 1998, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer due to bromate exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-16JAN-18-BRO3ND
2018-02-06FEB-18-BRO3ND
2018-03-06MAR-18-BRO3ND
2018-04-10APR-18-BRO3ND
2018-05-02MAY-18-BRO3ND
2018-06-12JUN-18-BRO35.54 ppb
2018-07-12JUL-18-BRO35.54 ppb
2018-08-07AUG-18-BRO3ND
2018-09-11SEP-18-BRO3ND
2018-10-10OCT-18-BRO3ND
2018-11-06NOV-18-BRO3ND
2018-12-12DEC-18-BRO3ND
2019-01-08JAN-19-BRO3ND
2019-02-12FEB-19-BRO3ND
2019-03-19MAR-19-BRO3ND
2019-04-09APR-19-BRO3ND
2019-05-07MAY-19-BRO3ND
2019-06-05JUN-19-BRO3ND
2019-07-16JUL-19-BRO3ND
2019-08-13AUG-19-BRO3ND
2019-09-10SEP-19-BRO3ND
2019-10-02OCT-19-BRO3ND
2019-11-07NOV-19-BRO3ND
2019-12-03DEC-19-BRO3ND
2020-01-08JAN-20-BRO38.01 ppb
2020-02-04FEB_20-BRO3ND
2020-03-10MAR_20-BRO35.28 ppb
2020-04-08APR_20-BRO322.5 ppb
2020-05-13MAY_20_BRO3ND
2020-06-03JUN_20_BRO3ND
2020-07-30JUL_20_BRO3ND
2020-08-20AUG_20_BRO3ND
2020-09-09SEP_20_BRO3ND
2020-10-08OCT_20_BRO3ND
2020-11-04NOV_20_BRO39.85 ppb
2020-12-11DEC_20_BRO3ND
2021-01-13JAN_21_BRO3ND
2021-02-23FEB_21_BRO34.07 ppb
2021-03-11MAR_21_BRO34.22 ppb
2021-04-07APR_21_BRO32.48 ppb
2021-05-06MAY_21_BRO32.09 ppb
2021-06-09JUN_21_BRO32.99 ppb
2021-07-19JUL_21_BRO33.42 ppb
2021-08-04AUG_21_BRO3ND
2021-09-08SEP_21_BRO3ND
2021-10-07OCT_21_BRO3ND
2021-11-03NOV_21_BRO34.17 ppb
2021-12-07DEC_21_BRO32.25 ppb
2022-01-10JAN_22_BRO33.94 ppb
2022-02-09FEB_22_BRO3ND
2022-03-09MAR_22_BRO3ND
2022-04-06APR_22_BRO3ND
2022-05-05MAY_22_BRO3ND
2022-06-07JUN_22_BRO3ND
2022-07-12JUL_22_BRO32.02 ppb
2022-08-09AUG_22_BRO35.86 ppb
2022-09-07SEP_22_BRO3ND
2022-10-12OCT_22_BRO3ND
2022-11-09NOV_22_BRO3ND
2022-12-06DEC_22_BRO3ND
2023-01-09JAN_23_BRO3ND
2023-02-08FEB_23_BRO3ND
2023-03-13MAR_23_BRO32.92 ppb
2023-04-12APR_23_BRO3ND
2023-05-04MAY_23_BRO3ND
2023-06-07JUN_23_BRO32.60 ppb
2023-07-13JUL_23_BRO3ND
2023-08-09AUG_23_BRO3ND
2023-09-12SEP_23_BRO3ND
2023-10-09OCT_23_BRO3ND
2023-11-09NOV_23_BRO3ND
2023-12-05DEC_23_BRO32.20 ppb