Chromium (hexavalent)
Water Authority of Western Nassau
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).
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 0.303 ppb | 10 | 9 | ND - 0.620 ppb |
2015 | 0.316 ppb | 14 | 13 | ND - 1.10 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 |
---|---|---|
2014-12-23 | 35169517013AM | ND |
2014-12-23 | 35169517001AM | 0.370 ppb |
2014-12-23 | 35169517007AM | 0.0910 ppb |
2014-12-23 | 35169517003AM | 0.560 ppb |
2014-12-23 | 35169517005AM | 0.0370 ppb |
2014-12-23 | 35169517011AM | 0.390 ppb |
2014-12-23 | 35169517009AM | 0.620 ppb |
2014-12-29 | 35169790005AM | 0.210 ppb |
2014-12-29 | 35169790001AM | 0.510 ppb |
2014-12-29 | 35169790003AM | 0.240 ppb |
2015-06-25 | 35195584001AM | 0.0560 ppb |
2015-06-25 | 35195584003AM | 0.190 ppb |
2015-07-21 | 35200053007AM | 0.0380 ppb |
2015-07-21 | 35200053005AM | 1.10 ppb |
2015-07-21 | 35200053003AM | 0.630 ppb |
2015-07-21 | 35200053013AM | ND |
2015-07-23 | 35200053009AM | 0.0860 ppb |
2015-07-23 | 35200053001AM | 0.370 ppb |
2015-07-23 | 35200053011AM | 0.310 ppb |
2015-07-27 | 35200053017AM | 0.260 ppb |
2015-07-27 | 15080804-001 | 0.814 ppb |
2015-07-27 | 35200053019AM | 0.240 ppb |
2015-11-12 | 35216561001AM | 0.270 ppb |
2015-11-12 | 35216561003AM | 0.0540 ppb |