Chromium (hexavalent)
Suez
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).
44
Samples
0
Samples exceeding legal limit (MCL)
39
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.429 ppb | 44 | 39 | ND - 2.00 ppb |
| 2015 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2014-01-27 | 201401280230AM | 0.0380 ppb |
| 2014-01-27 | 201401280197AM | 0.0580 ppb |
| 2014-01-27 | 201401280213AM | 0.0340 ppb |
| 2014-01-27 | 201401280199AM | 1.60 ppb |
| 2014-04-23 | 201404240378AM | 1.50 ppb |
| 2014-04-23 | 201404240342AM | 0.530 ppb |
| 2014-04-23 | 201404240561AM | ND |
| 2014-04-23 | 201404240197AM | 0.320 ppb |
| 2014-04-23 | 201404240478AM | ND |
| 2014-04-23 | 201404240446AM | 0.0450 ppb |
| 2014-04-29 | 201404300778AM | 0.220 ppb |
| 2014-04-29 | 201404300766AM | 2.00 ppb |
| 2014-04-29 | 201404300466AM | 1.20 ppb |
| 2014-04-29 | 201404300470AM | 1.20 ppb |
| 2014-04-29 | 201404300479AM | 0.540 ppb |
| 2014-04-29 | 201404300473AM | 0.0410 ppb |
| 2014-04-30 | 201405010395AM | 0.420 ppb |
| 2014-04-30 | 201405010475AM | 0.260 ppb |
| 2014-04-30 | 201405010391AM | 0.930 ppb |
| 2014-04-30 | 201405010408AM | 0.150 ppb |
| 2014-04-30 | 201405010503AM | 0.250 ppb |
| 2014-04-30 | 201405010429AM | 0.110 ppb |
| 2014-07-29 | 201407300233AM | 0.0360 ppb |
| 2014-07-29 | 201407300313AM | 0.0340 ppb |
| 2014-07-29 | 201407300200AM | 0.0480 ppb |
| 2014-07-29 | 201407300198AM | 2.00 ppb |
| 2014-10-06 | 201410070289AM | ND |
| 2014-10-06 | 201410070313AM | 0.540 ppb |
| 2014-10-06 | 201410070321AM | ND |
| 2014-10-06 | 201410070343AM | 0.720 ppb |
| 2014-10-07 | 201410080467AM | 0.500 ppb |
| 2014-10-07 | 201410080463AM | ND |
| 2014-10-07 | 201410080388AM | 0.0380 ppb |
| 2014-10-07 | 201410080382AM | 0.0620 ppb |
| 2014-10-09 | 201410100267AM | 0.180 ppb |
| 2014-10-09 | 201410100225AM | 1.20 ppb |
| 2014-10-14 | 201410150150AM | 0.120 ppb |
| 2014-10-14 | 201410150153AM | 1.20 ppb |
| 2014-10-14 | 201410150227AM | 0.0340 ppb |
| 2014-10-14 | 201410150249AM | 0.0300 ppb |
| 2014-10-15 | 201410160296AM | 0.260 ppb |
| 2014-10-15 | 201410160328AM | 0.0600 ppb |
| 2014-10-15 | 201410160351AM | 0.1000 ppb |
| 2014-10-15 | 201410160378AM | 0.260 ppb |