Chromium (hexavalent)
Santa Clarita Water Division
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).
63
Samples
0
Samples exceeding legal limit (MCL)
36
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.351 ppb | 48 | 36 | ND - 0.990 ppb |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 8 | 0 | ND |
| 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 |
|---|---|---|
| 2014-01-16 | 201401170103AM | 0.320 ppb |
| 2014-01-16 | 201401170107AM | 0.520 ppb |
| 2014-01-16 | 201401170105AM | 0.320 ppb |
| 2014-01-23 | 201401230579AM | 0.450 ppb |
| 2014-04-09 | 201404110132AM | 0.670 ppb |
| 2014-04-09 | 201404110113AM | 0.990 ppb |
| 2014-04-09 | 201404110128AM | 0.670 ppb |
| 2014-04-09 | 201404110068AM | 0.440 ppb |
| 2014-04-09 | 201404110087AM | 0.310 ppb |
| 2014-04-09 | 201404110120AM | 0.300 ppb |
| 2014-04-09 | 201404110126AM | 0.620 ppb |
| 2014-04-09 | 201404110093AM | 0.490 ppb |
| 2014-04-09 | 201404110118AM | 0.590 ppb |
| 2014-04-09 | 201404110130AM | 0.560 ppb |
| 2014-04-10 | 201404110083AM | 0.470 ppb |
| 2014-04-10 | 201404110070AM | 0.250 ppb |
| 2014-04-10 | 201404110099AM | 0.350 ppb |
| 2014-04-10 | 201404110115AM | 0.850 ppb |
| 2014-04-10 | 201404110110AM | 0.340 ppb |
| 2014-07-16 | 201407160900AM | 0.450 ppb |
| 2014-07-16 | 201407160886AM | 0.450 ppb |
| 2014-07-16 | 201407160888AM | 0.550 ppb |
| 2014-07-16 | 201407160902AM | 0.450 ppb |
| 2014-10-01 | 9590-040-1120 | ND |
| 2014-10-01 | 9590-039-0920 | ND |
| 2014-10-01 | 9590-025-1040 | ND |
| 2014-10-01 | 9590-016-1025 | ND |
| 2014-10-01 | 9590-015-0905 | ND |
| 2014-10-01 | 9590-013-0920 | ND |
| 2014-10-01 | 9590-012-1045 | ND |
| 2014-10-01 | 9590-008-0935 | ND |
| 2014-10-01 | 9590-007-1110 | ND |
| 2014-10-01 | 9590-006-1025 | ND |
| 2014-10-15 | 201410150599AM | 0.370 ppb |
| 2014-10-15 | 201410150587AM | 0.370 ppb |
| 2014-10-15 | 201410150597AM | 0.540 ppb |
| 2014-10-15 | 201410150583AM | 0.300 ppb |
| 2014-10-15 | 201410150595AM | 0.620 ppb |
| 2014-10-15 | 201410150589AM | 0.410 ppb |
| 2014-10-15 | 201410150593AM | 0.520 ppb |
| 2014-10-15 | 201410150579AM | 0.270 ppb |
| 2014-10-15 | 201410150585AM | 0.430 ppb |
| 2014-10-15 | 201410150591AM | 0.670 ppb |
| 2014-10-15 | 201410150581AM | 0.220 ppb |
| 2014-10-15 | 201410150577AM | 0.260 ppb |
| 2014-10-15 | 201410150601AM | 0.440 ppb |
| 2014-11-20 | 9590-019-0915 | ND |
| 2014-11-20 | 9590-002-1420 | ND |
| 2015-01-15 | 9590-009-1100 | ND |
| 2016-05-04 | 9590-014-0930 | ND |
| 2016-05-18 | 9590-016-1030 | ND |
| 2016-05-18 | 9590-007-0940 | ND |
| 2016-05-18 | 9590-025-1000 | ND |
| 2016-05-18 | 9590-039-0850 | ND |
| 2016-05-18 | 9590-002-0830 | ND |
| 2017-05-18 | 9590-019-0935 | ND |
| 2017-05-18 | 9590-014-0915 | ND |
| 2017-05-18 | 9590-012-1030 | ND |
| 2017-05-18 | 9590-008-1120 | ND |
| 2017-05-18 | 9590-006-1305 | ND |
| 2017-08-30 | 9590-015-0915 | ND |
| 2017-08-30 | 9590-013-0940 | ND |
| 2017-10-04 | 9590-013-0915 | ND |