Chromium (hexavalent)
Lacey Water Department
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).
40
Samples
0
Samples exceeding legal limit (MCL)
33
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 0.250 ppb | 20 | 17 | ND - 0.540 ppb |
| 2015 | 0.207 ppb | 20 | 16 | ND - 0.540 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 |
|---|---|---|
| 2014-12-02 | 201412040301AM | 0.440 ppb |
| 2014-12-02 | 201412040255AM | 0.200 ppb |
| 2014-12-02 | 201412040492AM | 0.130 ppb |
| 2014-12-02 | 201412040482AM | ND |
| 2014-12-03 | 201412040345AM | ND |
| 2014-12-03 | 201412050482AM | 0.0430 ppb |
| 2014-12-03 | 201412040287AM | ND |
| 2014-12-03 | 201412040484AM | 0.420 ppb |
| 2014-12-03 | 201412050406AM | 0.540 ppb |
| 2014-12-03 | 201412050528AM | 0.420 ppb |
| 2014-12-04 | 201412050367AM | 0.450 ppb |
| 2014-12-04 | 201412050525AM | 0.340 ppb |
| 2014-12-04 | 201412050393AM | 0.320 ppb |
| 2014-12-04 | 201412050391AM | 0.250 ppb |
| 2014-12-04 | 201412050361AM | 0.320 ppb |
| 2014-12-04 | 201412050380AM | 0.390 ppb |
| 2014-12-04 | 201412050384AM | 0.390 ppb |
| 2014-12-04 | 201412050498AM | 0.120 ppb |
| 2014-12-04 | 201412040579AM | 0.0360 ppb |
| 2014-12-04 | 201412050473AM | 0.190 ppb |
| 2015-06-29 | 201506300498AM | 0.0430 ppb |
| 2015-06-29 | 201506300307AM | ND |
| 2015-06-29 | 201506300374AM | 0.230 ppb |
| 2015-06-29 | 201506300279AM | 0.200 ppb |
| 2015-06-29 | 201506300287AM | 0.390 ppb |
| 2015-06-29 | 201506300521AM | 0.140 ppb |
| 2015-06-29 | 201506300283AM | 0.170 ppb |
| 2015-06-29 | 201506300181AM | 0.0300 ppb |
| 2015-06-29 | 201506300175AM | 0.350 ppb |
| 2015-06-29 | 201506300235AM | 0.130 ppb |
| 2015-06-29 | 201506300274AM | ND |
| 2015-06-29 | 201506300314AM | 0.210 ppb |
| 2015-06-29 | 201506300268AM | 0.120 ppb |
| 2015-06-30 | 201507010550AM | 0.180 ppb |
| 2015-06-30 | 201507010336AM | 0.540 ppb |
| 2015-06-30 | 201507010547AM | 0.480 ppb |
| 2015-07-15 | 201507160590AM | ND |
| 2015-07-15 | 201507160595AM | 0.430 ppb |
| 2015-07-15 | 201507160594AM | 0.490 ppb |
| 2015-07-15 | 201507160591AM | ND |