Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromate

Woodland-davis Clean Water Agency

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.

MORE ABOUT THIS CONTAMINANT

 

42

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016ND60ND
2017ND120ND
2018ND120ND
2019ND120ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2016-06-155810-002-0756ND
2016-08-175810-002-1225ND
2016-09-145810-002-1100ND
2016-10-125810-002-1055ND
2016-11-095810-002-1200ND
2016-12-145810-002-1155ND
2017-01-115810-002-1101ND
2017-02-085810-002-1043ND
2017-03-085810-002-1125ND
2017-04-125810-002-1117ND
2017-05-105810-002-1110ND
2017-06-145810-002-1010ND
2017-07-125810-002-1209ND
2017-08-095810-002-1258ND
2017-09-135810-002-1009ND
2017-10-115810-002-1153ND
2017-11-085810-002-1128ND
2017-12-135810-002-1107ND
2018-01-095810-002-1136ND
2018-02-145810-002-1147ND
2018-03-145810-002-1121ND
2018-04-115810-002-1044ND
2018-05-095810-002-1023ND
2018-06-135810-002-1111ND
2018-07-115810-002-1341ND
2018-08-085810-002-1117ND
2018-09-125810-002-1027ND
2018-10-105810-002-1045ND
2018-11-145810-002-1145ND
2018-12-125810-002-1030ND
2019-01-095810-002-1045ND
2019-02-135810-002-1202ND
2019-03-135810-002-1125ND
2019-04-105810-002-1155ND
2019-05-085810-002-1120ND
2019-06-125810-002-1056ND
2019-07-105810-002-1120ND
2019-08-145810-002-1135ND
2019-09-115810-002-1118ND
2019-10-095810-002-1125ND
2019-11-065810-002-1027ND
2019-12-055810-002-1001ND