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EWG's Tap Water Database — 2021 UPDATE

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Chromium (hexavalent)

East Valley Water District

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).

MORE ABOUT THIS CONTAMINANT

 

77

Samples

0

Samples exceeding legal limit (MCL)

46

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.621 ppb3935ND - 2.60 ppb
2015ND10ND
20160.539 ppb187ND - 1.70 ppb
20170.750 ppb21ND - 1.50 ppb
2018ND10ND
20190.213 ppb163ND - 1.40 ppb

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
2014-02-05B4B0490-011.000 ppb
2014-02-05B4B0490-030.490 ppb
2014-02-10B4B0801-090.840 ppb
2014-02-10B4B0801-030.810 ppb
2014-02-10B4B0801-070.370 ppb
2014-02-10B4B0801-050.900 ppb
2014-02-10B4B0801-011.10 ppb
2014-02-13B4B1374-052.60 ppb
2014-02-13B4B1374-031.30 ppb
2014-02-13B4B1374-010.860 ppb
2014-02-20B4B1932-09ND
2014-02-20B4B1932-110.150 ppb
2014-02-20B4B1932-010.320 ppb
2014-02-20B4B1932-070.850 ppb
2014-02-20B4B1932-050.250 ppb
2014-02-20B4B1932-030.280 ppb
2014-02-25B4B2210-050.200 ppb
2014-02-25B4B2210-010.200 ppb
2014-02-25B4B2210-070.590 ppb
2014-02-25B4B2210-030.190 ppb
2014-02-26B4B2332-011.50 ppb
2014-02-26B4B2332-030.440 ppb
2014-02-26B4B2332-050.370 ppb
2014-05-20B4E1846-030.180 ppb
2014-05-20B4E1846-01ND
2014-05-22B4E2247-010.0440 ppb
2014-08-074790-021-10351.50 ppb
2014-08-14B4H1446-051.10 ppb
2014-08-14B4H1446-030.410 ppb
2014-08-14B4H1446-091.000 ppb
2014-08-14B4H1446-070.820 ppb
2014-08-14B4H1446-010.110 ppb
2014-08-14B4H1446-110.1000 ppb
2014-08-214790-023-09300.970 ppb
2014-08-214790-024-10451.90 ppb
2014-08-284790-042-07300.210 ppb
2014-11-14B4K1392-010.280 ppb
2014-12-023761-036-0725ND
2014-12-19B4L2396-01ND
2015-12-143761-036-1145ND
2016-05-053761-028-11301.60 ppb
2016-06-073761-015-0850ND
2016-06-073761-055-0855ND
2016-06-073761-053-0810ND
2016-06-073761-017-08311.40 ppb
2016-06-073761-020-08411.40 ppb
2016-06-073761-016-1000ND
2016-06-073761-021-09001.70 ppb
2016-06-073761-042-0810ND
2016-06-073761-039-0825ND
2016-06-073761-031-08451.10 ppb
2016-06-073761-024-09251.40 ppb
2016-06-083761-046-0710ND
2016-06-093761-036-0000ND
2016-06-143761-019-0816ND
2016-06-143761-023-09551.10 ppb
2016-06-143761-032-0745ND
2016-10-263761-033-0737ND
2017-06-063761-036-1021ND
2017-12-053761-028-08501.50 ppb
2018-06-073761-036-0833ND
2019-06-043761-017-09331.40 ppb
2019-06-043761-020-0841ND
2019-06-043761-033-0734ND
2019-06-073761-036-1040ND
2019-06-113761-023-0810ND
2019-06-113761-032-0752ND
2019-06-113761-024-08501.000 ppb
2019-06-113761-021-0836ND
2019-06-113761-042-0743ND
2019-06-183761-019-0808ND
2019-06-183761-053-0734ND
2019-06-183761-031-07441.000 ppb
2019-06-183761-015-0715ND
2019-06-213761-055-0000ND
2019-06-213761-046-0811ND
2019-06-213761-039-0823ND