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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

City of San Clemente

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

 

24

Samples

0

Samples exceeding legal limit (MCL)

19

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20130.0569 ppb880.0300 ppb - 0.0850 ppb
20140.0360 ppb108ND - 0.0530 ppb
20150.0885 ppb43ND - 0.240 ppb
2016N/A00N/A
2017ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) 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.

ppb = parts per billion

All test results

Date Lab ID Result
2013-09-113I11048-03A0.0320 ppb
2013-09-113I11048-01A0.0300 ppb
2013-09-113I11048-07A0.0310 ppb
2013-09-113I11048-05A0.0410 ppb
2013-12-093L09134-07A0.0830 ppb
2013-12-093L09134-01A0.0850 ppb
2013-12-093L09134-05A0.0770 ppb
2013-12-093L09134-03A0.0760 ppb
2014-03-104C10057-03A0.0350 ppb
2014-03-104C10057-05A0.0460 ppb
2014-03-104C10057-07A0.0430 ppb
2014-03-104C10057-01A0.0350 ppb
2014-06-184F18051-07A0.0490 ppb
2014-06-184F18051-05A0.0530 ppb
2014-06-184F18051-03A0.0460 ppb
2014-06-184F18051-01A0.0530 ppb
2014-07-081805-004-0900ND
2014-07-091805-021-0905ND
2015-07-295G29085-01AND
2015-07-295G29085-03A0.0650 ppb
2015-12-025L02070-01A0.0490 ppb
2015-12-025L02070-03A0.240 ppb
2017-02-081805-004-1115ND
2017-03-081805-021-1120ND