Chromium (hexavalent)
Eastern Municipal 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).
87
Samples
0
Samples exceeding legal limit (MCL)
65
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | 0.321 ppb | 60 | 51 | ND - 1.40 ppb |
| 2014 | 0.296 ppb | 16 | 14 | ND - 1.30 ppb |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 2 | 0 | ND |
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 |
|---|---|---|
| 2013-04-15 | B3D1604-11 | 0.0470 ppb |
| 2013-04-15 | B3D1604-05 | 0.430 ppb |
| 2013-04-15 | B3D1604-09 | 0.0880 ppb |
| 2013-04-15 | B3D1611-09 | 0.120 ppb |
| 2013-04-15 | B3D1604-01 | 0.0640 ppb |
| 2013-04-15 | B3D1611-01 | 0.0770 ppb |
| 2013-04-15 | B3D1600-07 | 0.0630 ppb |
| 2013-04-15 | B3D1600-01 | ND |
| 2013-04-15 | B3D1611-03 | 0.110 ppb |
| 2013-04-15 | B3D1611-05 | 0.360 ppb |
| 2013-04-15 | B3D1600-09 | 0.0870 ppb |
| 2013-04-16 | B3D1723-03 | 0.0330 ppb |
| 2013-04-17 | B3D1872-02 | 0.0490 ppb |
| 2013-04-17 | B3D1868-01 | 1.20 ppb |
| 2013-04-17 | B3D1872-03 | ND |
| 2013-04-17 | B3D1872-01 | 0.160 ppb |
| 2013-04-17 | B3D1868-05 | 1.30 ppb |
| 2013-04-17 | B3D1868-03 | 0.560 ppb |
| 2013-04-17 | B3D1868-04 | 0.550 ppb |
| 2013-04-17 | B3D1868-06 | 1.30 ppb |
| 2013-04-22 | B3D2337-03 | 0.650 ppb |
| 2013-04-22 | B3D2337-02 | 0.1000 ppb |
| 2013-04-22 | B3D2337-01 | ND |
| 2013-06-06 | B3F0711-01 | ND |
| 2013-07-15 | B3G1399-01 | 0.260 ppb |
| 2013-07-15 | B3G1398-01 | 0.0620 ppb |
| 2013-07-15 | B3G1483-01 | 0.440 ppb |
| 2013-07-15 | B3G1474-01 | 0.380 ppb |
| 2013-07-15 | B3G1395-01 | 0.0600 ppb |
| 2013-07-15 | B3G1403-01 | 0.550 ppb |
| 2013-07-15 | B3G1396-01 | 0.0850 ppb |
| 2013-07-15 | B3G1480-01 | 0.0900 ppb |
| 2013-07-15 | B3G1479-01 | 1.30 ppb |
| 2013-07-15 | B3G1481-01 | 0.0840 ppb |
| 2013-07-15 | B3G1482-01 | 0.0800 ppb |
| 2013-07-15 | B3G1477-01 | 0.540 ppb |
| 2013-10-07 | B3J0724-01 | 1.40 ppb |
| 2013-10-07 | B3J0732-01 | 0.400 ppb |
| 2013-10-07 | B3J0725-01 | 0.0840 ppb |
| 2013-10-07 | B3J0730-01 | 0.470 ppb |
| 2013-10-07 | B3J0735-01 | 0.160 ppb |
| 2013-10-07 | B3J0736-01 | 0.0590 ppb |
| 2013-10-07 | B3J0733-01 | 0.120 ppb |
| 2013-10-07 | B3J0723-01 | 0.310 ppb |
| 2013-10-07 | B3J0727-01 | ND |
| 2013-10-07 | B3J0720-01 | 0.1000 ppb |
| 2013-10-07 | B3J0719-01 | ND |
| 2013-10-08 | B3J0888-01 | 1.30 ppb |
| 2013-10-08 | B3J0890-01 | 0.350 ppb |
| 2013-10-08 | B3J0887-01 | ND |
| 2013-10-08 | B3J0885-01 | 0.0410 ppb |
| 2013-10-08 | B3J0896-01 | 0.440 ppb |
| 2013-10-08 | B3J0898-01 | 0.0580 ppb |
| 2013-10-08 | B3J0891-01 | 0.180 ppb |
| 2013-10-08 | B3J0892-01 | 1.20 ppb |
| 2013-10-08 | B3J0900-01 | 0.0550 ppb |
| 2013-10-08 | B3J0895-01 | 1.10 ppb |
| 2013-11-25 | B3K2305-01 | ND |
| 2013-11-25 | B3K2296-01 | ND |
| 2013-11-26 | B3K2309-01 | 0.160 ppb |
| 2014-01-06 | B4A0345-01 | 0.120 ppb |
| 2014-01-06 | B4A0342-01 | 0.180 ppb |
| 2014-01-06 | B4A0344-01 | 1.30 ppb |
| 2014-01-06 | B4A0346-01 | 0.480 ppb |
| 2014-01-06 | B4A0341-01 | 0.0730 ppb |
| 2014-01-06 | B4A0338-01 | 0.0660 ppb |
| 2014-01-06 | B4A0336-01 | 0.570 ppb |
| 2014-01-06 | B4A0339-01 | 0.0480 ppb |
| 2014-01-06 | B4A0337-01 | 0.510 ppb |
| 2014-01-07 | B4A0397-01 | 0.110 ppb |
| 2014-01-07 | B4A0398-01 | 0.790 ppb |
| 2014-01-07 | B4A0395-01 | 0.150 ppb |
| 2014-02-14 | B4B1390-01 | 0.290 ppb |
| 2014-08-04 | B4H0279-01 | 0.0520 ppb |
| 2014-08-18 | 4790-081-0850 | ND |
| 2014-08-18 | 4790-071-0900 | ND |
| 2015-08-04 | 4790-081-0820 | ND |
| 2015-08-04 | 4790-063-1015 | ND |
| 2015-08-04 | 4790-071-0830 | ND |
| 2016-08-01 | 4790-081-0830 | ND |
| 2016-08-01 | 4790-071-0835 | ND |
| 2016-08-02 | 4790-063-0840 | ND |
| 2017-08-01 | 4790-063-1030 | ND |
| 2017-08-01 | 4790-081-1126 | ND |
| 2017-08-02 | 4790-071-0815 | ND |
| 2019-07-08 | 4790-063-1507 | ND |
| 2019-07-11 | 4790-081-1445 | ND |