Chromium (hexavalent)

City of Mesa

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

128

Samples

Samples exceeding legal limit (MCL)

128

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2013	5.97 ppb	120	120	0.0310 ppb - 24.0 ppb
2014	0.673 ppb	6	6	0.110 ppb - 3.30 ppb
2015	0.210 ppb	2	2	0.130 ppb - 0.290 ppb
2016	N/A	0	0	N/A
2017	N/A	0	0	N/A
2018	N/A	0	0	N/A
2019	N/A	0	0	N/A

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
2013-01-15	201301160548AM	2.10 ppb
2013-01-15	201301160554AM	4.50 ppb
2013-01-16	201301160560AM	0.0460 ppb
2013-01-16	201301160558AM	2.40 ppb
2013-01-16	201301160566AM	1.80 ppb
2013-01-16	201301160562AM	2.80 ppb
2013-01-16	201301160564AM	1.70 ppb
2013-01-22	201301240174AM	3.50 ppb
2013-01-22	201301240176AM	0.0520 ppb
2013-01-22	201301240172AM	0.0310 ppb
2013-01-22	201301240152AM	3.40 ppb
2013-01-23	201301240197AM	0.890 ppb
2013-01-23	201301240195AM	1.70 ppb
2013-01-23	201301240180AM	2.00 ppb
2013-01-30	201301310433AM	6.40 ppb
2013-01-30	201301310431AM	0.200 ppb
2013-02-12	201302140551AM	7.20 ppb
2013-02-12	201302140549AM	1.20 ppb
2013-02-12	201302140542AM	7.00 ppb
2013-02-12	201302140544AM	9.50 ppb
2013-02-12	201302140546AM	7.00 ppb
2013-02-13	201302140540AM	4.00 ppb
2013-02-13	201302140538AM	0.160 ppb
2013-02-13	201302140535AM	8.00 ppb
2013-02-13	201302140531AM	2.80 ppb
2013-02-13	201302140529AM	4.00 ppb
2013-02-13	201302140533AM	4.40 ppb
2013-02-19	201302200373AM	10.00 ppb
2013-02-19	201302200375AM	11.0 ppb
2013-02-19	201302200371AM	13.0 ppb
2013-04-08	201304100491AM	4.20 ppb
2013-04-09	201304100493AM	2.20 ppb
2013-04-09	201304100477AM	2.10 ppb
2013-04-09	201304100479AM	20.0 ppb
2013-04-09	201304100481AM	14.0 ppb
2013-04-10	201304110552AM	9.60 ppb
2013-04-10	201304110554AM	6.00 ppb
2013-04-10	201304110546AM	4.70 ppb
2013-04-10	201304110540AM	13.0 ppb
2013-04-10	201304110542AM	10.00 ppb
2013-04-10	201304110544AM	6.80 ppb
2013-04-16	201304170691AM	2.20 ppb
2013-04-17	201304170697AM	0.470 ppb
2013-04-17	201304170699AM	0.0540 ppb
2013-04-17	201304170701AM	2.10 ppb
2013-04-17	201304170695AM	0.0370 ppb
2013-05-09	201305100048AM	8.60 ppb
2013-05-09	201305100040AM	20.0 ppb
2013-05-09	201305100042AM	24.0 ppb
2013-05-09	201305100044AM	13.0 ppb
2013-05-09	201305100046AM	12.0 ppb
2013-05-09	201305100038AM	18.0 ppb
2013-05-14	201305150465AM	3.10 ppb
2013-05-14	201305150463AM	1.30 ppb
2013-05-15	201305150520AM	1.80 ppb
2013-05-15	201305150518AM	6.20 ppb
2013-05-20	201305200190AM	11.0 ppb
2013-05-20	201305200188AM	12.0 ppb
2013-05-20	201305200068AM	3.60 ppb
2013-05-20	201305200127AM	14.0 ppb
2013-07-09	201307100757AM	0.0430 ppb
2013-07-09	201307100755AM	6.90 ppb
2013-07-10	201307100759AM	7.80 ppb
2013-07-10	201307100761AM	0.0380 ppb
2013-07-16	201307170500AM	1.20 ppb
2013-07-16	201307170508AM	5.20 ppb
2013-07-16	201307170504AM	3.20 ppb
2013-07-16	201307170506AM	3.40 ppb
2013-07-16	201307170510AM	4.80 ppb
2013-07-17	201307170512AM	1.30 ppb
2013-07-17	201307170514AM	0.150 ppb
2013-07-17	201307170516AM	2.60 ppb
2013-07-17	201307170520AM	1.80 ppb
2013-07-17	201307170518AM	1.80 ppb
2013-07-23	201307240533AM	0.0490 ppb
2013-07-23	201307240531AM	0.0320 ppb
2013-07-24	201307240537AM	4.70 ppb
2013-07-24	201307240544AM	4.60 ppb
2013-08-06	201308070601AM	5.10 ppb
2013-08-06	201308070603AM	2.50 ppb
2013-08-06	201308070586AM	5.50 ppb
2013-08-06	201308070588AM	6.60 ppb
2013-08-06	201308070584AM	5.20 ppb
2013-08-07	201308070605AM	5.50 ppb
2013-08-07	201308070590AM	5.60 ppb
2013-08-13	201308140062AM	5.20 ppb
2013-08-13	201308140060AM	10.00 ppb
2013-08-14	201308140418AM	9.50 ppb
2013-08-14	201308140416AM	1.30 ppb
2013-08-14	201308140394AM	2.50 ppb
2013-08-14	201308140392AM	4.20 ppb
2013-10-08	201310080652AM	0.0950 ppb
2013-10-08	201310080650AM	6.40 ppb
2013-10-08	201310080610AM	15.0 ppb
2013-10-08	201310080612AM	13.0 ppb
2013-10-08	201310080614AM	20.0 ppb
2013-10-08	201310080616AM	19.0 ppb
2013-10-09	201310090515AM	0.960 ppb
2013-10-09	201310090517AM	8.10 ppb
2013-10-09	201310090511AM	2.60 ppb
2013-10-09	201310090513AM	9.30 ppb
2013-10-15	201310150507AM	3.70 ppb
2013-10-15	201310150505AM	0.0550 ppb
2013-10-15	201310150509AM	1.50 ppb
2013-10-15	201310150503AM	0.0390 ppb
2013-10-16	201310160477AM	3.80 ppb
2013-10-16	201310160475AM	0.220 ppb
2013-11-05	201311070309AM	7.50 ppb
2013-11-05	201311070311AM	0.0390 ppb
2013-11-05	201311050403AM	4.00 ppb
2013-11-05	201311050401AM	14.0 ppb
2013-11-06	201311070313AM	8.80 ppb
2013-11-06	201311070294AM	22.0 ppb
2013-11-06	201311070298AM	24.0 ppb
2013-11-06	201311070300AM	12.0 ppb
2013-11-06	201311070296AM	19.0 ppb
2013-11-12	201311130338AM	3.10 ppb
2013-11-12	201311130336AM	4.10 ppb
2013-11-13	201311140713AM	6.10 ppb
2013-11-20	201311210516AM	0.240 ppb
2014-03-25	201403250421AM	3.30 ppb
2014-03-25	201403250419AM	0.220 ppb
2014-06-04	201406040578AM	0.160 ppb
2014-06-04	201406040576AM	0.130 ppb
2014-09-02	201409020219AM	0.120 ppb
2014-09-02	201409020217AM	0.110 ppb
2015-01-21	201501220206AM	0.290 ppb
2015-01-21	201501220204AM	0.130 ppb