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EWG's Tap Water Database — 2021 UPDATE

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Bromide

Southwest Water Authority

Bromide is a naturally occurring element found in surface waters and groundwater. During drinking water treatment, bromide can combine with chlorine or other disinfectants, contributing to the formation of toxic tap water disinfection byproducts.

 

13

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
2016N/A00N/A
2017N/A00N/A
201825.1 ppb996.30 ppb - 35.0 ppb
201930.0 ppb4427.0 ppb - 33.0 ppb

ppb = parts per billion

All test results

Date Lab ID Result
2018-04-1820180223042934.0 ppb
2018-05-1620180517120835.0 ppb
2018-06-2620180627057334.0 ppb
2018-07-1920180223040828.0 ppb
2018-08-0820180810031428.0 ppb
2018-09-1120180716004328.0 ppb
2018-10-16201801707978.60 ppb
2018-11-132018082000186.30 ppb
2018-12-1120180917000124.0 ppb
2019-01-0820181119002027.0 ppb
2019-02-2020181022001129.0 ppb
2019-03-1120190121000331.0 ppb
2019-04-0920190218000733.0 ppb