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EWG's Tap Water Database — 2019 UPDATE

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Bromate

City of Phoenix

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.

 

113

Samples

1

Samples exceeding legal limit (MCL)

21

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20122.53 ppb2317ND - 11.0 ppb
2013ND240ND
20140.0667 ppb241ND - 1.60 ppb
20150.256 ppb183ND - 1.90 ppb
2016ND120ND
2017ND120ND

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
2012-01-0525722674.00 ppb
2012-01-2720120060213.50 ppb
2012-02-0225863391.90 ppb
2012-02-032012022101891.20 ppb
2012-03-0126013353.80 ppb
2012-04-1226240244.70 ppb
2012-04-1320120233250.700 ppb
2012-05-0226349802.20 ppb
2012-05-042012028528ND
2012-06-0620120606024211.0 ppb
2012-06-152012038736ND
2012-07-022012070200853.00 ppb
2012-07-0520120436343.60 ppb
2012-08-0120120501603.30 ppb
2012-08-012012080104073.70 ppb
2012-09-052012090505373.10 ppb
2012-09-0720120595403.50 ppb
2012-10-032012100300973.90 ppb
2012-10-1120120676131.20 ppb
2012-11-012012072723ND
2012-11-072012110705025ND
2012-12-05201212050325ND
2012-12-072012080663ND
2013-01-02201301030073ND
2013-01-112013002554ND
2013-02-06201302060076ND
2013-02-12PWB1315-01ND
2013-03-01201303040016ND
2013-03-06201303060549ND
2013-04-03201304030282ND
2013-04-05201304100506ND
2013-05-01201305010156ND
2013-05-10201305140105ND
2013-06-05201306050247ND
2013-06-07201306100140ND
2013-07-01201307010143ND
2013-07-05201307080174ND
2013-08-01201308050265ND
2013-08-07201308070582ND
2013-09-04201309040627ND
2013-09-06201309110541ND
2013-10-02201310020446ND
2013-10-04201310070180ND
2013-11-01201311050478ND
2013-11-06201311060662ND
2013-12-04201312040511ND
2013-12-06201312110769ND
2014-01-02201401020048ND
2014-01-03201401060073ND
2014-02-052014020050126ND
2014-02-07201402120705ND
2014-03-05201403050625ND
2014-03-112014031206671.60 ppb
2014-04-02201404020690ND
2014-04-11201404160776ND
2014-05-07201405070355ND
2014-05-07201405070454ND
2014-06-04201406040504ND
2014-06-05201406090030ND
2014-07-01201407010316ND
2014-07-02201407020685ND
2014-08-06201408060483ND
2014-08-12201408130417ND
2014-09-03201409030693ND
2014-09-05201409100729ND
2014-10-01201410010408ND
2014-10-03201410070544ND
2014-11-05201411050147ND
2014-11-07201411100077ND
2014-12-03201412030449ND
2014-12-05121412100529ND
2015-01-06201501060474ND
2015-01-07201501070258ND
2015-02-04201502040154ND
2015-02-06201502100425ND
2015-03-09201503100455ND
2015-03-11201503110425ND
2015-04-01201504010552ND
2015-04-03201504070413ND
2015-05-01201505040358ND
2015-05-06201505060368ND
2015-06-03201506030302ND
2015-06-05201506080277ND
2015-07-012015070104151.90 ppb
2015-07-07201507080207ND
2015-08-052015080504071.30 ppb
2015-08-052015080504421.40 ppb
2015-09-02201509020215ND
2015-09-04201509080271ND
2016-04-01201604050744ND
2016-04-06201604060374ND
2016-05-04201605040288ND
2016-05-06201605100497ND
2016-06-01201606010516ND
2016-06-07201606080210ND
2016-07-06201607060334ND
2016-08-03201608030437ND
2016-09-07201609070399ND
2016-10-05201610050473ND
2016-11-02201611020365ND
2016-12-05201612050167ND
2017-01-04201701060002ND
2017-02-01201702010351ND
2017-03-01201703010269ND
2017-04-04201704040658ND
2017-05-03201705030362ND
2017-06-05201706050248ND
2017-07-05201707050539ND
2017-08-02201708021181ND
2017-09-06201709060824ND
2017-10-04201710040615ND
2017-11-01201711010759ND
2017-12-06201712060123ND