Chromium (hexavalent)
City of Lodi
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).
109
Samples
0
Samples exceeding legal limit (MCL)
89
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 2.03 ppb | 55 | 42 | ND - 8.20 ppb |
| 2015 | 2.06 ppb | 36 | 32 | ND - 8.30 ppb |
| 2016 | ND | 1 | 0 | ND |
| 2017 | 1.38 ppb | 17 | 15 | ND - 4.54 ppb |
| 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 |
|---|---|---|
| 2014-09-17 | A4H2768-04A | 0.610 ppb |
| 2014-09-17 | A4H2772-03A | 5.80 ppb |
| 2014-09-17 | A4H2768-15A | ND |
| 2014-09-17 | A4H2768-12A | 0.430 ppb |
| 2014-09-17 | A4H2772-11A | 5.40 ppb |
| 2014-09-17 | A4H2770-06A | 0.910 ppb |
| 2014-09-17 | A4H2768-01A | 0.170 ppb |
| 2014-09-17 | A4H2770-14A | 2.40 ppb |
| 2014-09-17 | A4H2768-09A | 1.30 ppb |
| 2014-09-17 | A4H2768-07A | 0.590 ppb |
| 2014-09-17 | A4H2770-01A | 1.10 ppb |
| 2014-09-17 | A4H2772-06A | 4.70 ppb |
| 2014-09-17 | A4H2772-01A | 5.60 ppb |
| 2014-09-17 | A4H2770-12A | 2.50 ppb |
| 2014-09-17 | A4H2772-14A | 8.20 ppb |
| 2014-09-17 | A4H2770-03A | 1.40 ppb |
| 2014-09-17 | A4H2772-08A | 5.40 ppb |
| 2014-09-18 | A4H2775-10A | 0.860 ppb |
| 2014-09-18 | A4H2779-01A | 5.40 ppb |
| 2014-09-18 | A4H2777-07A | 1.60 ppb |
| 2014-09-18 | A4H2775-07A | 0.820 ppb |
| 2014-09-18 | A4H2779-10A | 5.30 ppb |
| 2014-09-18 | A4H2775-13A | 0.470 ppb |
| 2014-09-18 | A4H2779-15A | 2.40 ppb |
| 2014-09-18 | A4H2779-07A | 2.90 ppb |
| 2014-09-18 | A4H2777-04A | 3.00 ppb |
| 2014-09-18 | A4H2779-04A | 8.20 ppb |
| 2014-09-18 | A4H2777-10A | 1.60 ppb |
| 2014-09-18 | A4H2777-01A | 3.20 ppb |
| 2014-09-18 | A4H2775-04A | ND |
| 2014-09-18 | A4H2775-01A | 0.250 ppb |
| 2014-09-18 | A4H2777-13A | 0.540 ppb |
| 2014-09-18 | A4H2779-13A | 2.90 ppb |
| 2014-09-18 | A4H2775-16A | 0.480 ppb |
| 2014-11-04 | 5810-002-0830 | ND |
| 2014-11-04 | 5810-009-0930 | ND |
| 2014-11-05 | 5810-025-0910 | ND |
| 2014-11-05 | 5810-033-0900 | ND |
| 2014-11-06 | 5810-003-1010 | 1.20 ppb |
| 2014-11-06 | 5810-028-0930 | ND |
| 2014-11-06 | 5810-029-0640 | ND |
| 2014-11-06 | 5810-040-1345 | ND |
| 2014-11-10 | 5810-006-1300 | ND |
| 2014-11-10 | 5810-046-1330 | ND |
| 2014-11-11 | 5810-012-0630 | 2.80 ppb |
| 2014-11-11 | 5810-019-0650 | ND |
| 2014-11-11 | 5810-031-0710 | 1.60 ppb |
| 2014-11-12 | 5810-016-0710 | 5.00 ppb |
| 2014-11-12 | 5810-048-0730 | 5.10 ppb |
| 2014-11-18 | 5810-017-0940 | 1.40 ppb |
| 2014-11-18 | 5810-018-1000 | 1.50 ppb |
| 2014-11-18 | 5810-021-0915 | 2.80 ppb |
| 2014-11-18 | 5810-023-0850 | 3.70 ppb |
| 2014-12-10 | A4K1202-01A | ND |
| 2014-12-10 | A4K1202-04A | 0.120 ppb |
| 2015-03-18 | A5B2003-04A | 0.600 ppb |
| 2015-03-18 | A5B2020-03A | 5.50 ppb |
| 2015-03-18 | A5B2001-01A | ND |
| 2015-03-18 | A5B2003-10A | 0.450 ppb |
| 2015-03-18 | A5B2007-06A | 0.800 ppb |
| 2015-03-18 | A5B2020-11A | 0.0930 ppb |
| 2015-03-18 | A5B2003-01A | 0.140 ppb |
| 2015-03-18 | A5B2003-07A | 1.30 ppb |
| 2015-03-18 | A5B2007-11A | 2.40 ppb |
| 2015-03-18 | A5B2020-06A | 2.30 ppb |
| 2015-03-18 | A5B2007-01A | 1.40 ppb |
| 2015-03-18 | A5B2020-01A | 4.70 ppb |
| 2015-03-18 | A5B2001-04A | 1.10 ppb |
| 2015-03-18 | A5B2007-09A | 4.90 ppb |
| 2015-03-18 | A5B2020-08A | 4.20 ppb |
| 2015-03-18 | A5B2020-14A | 4.60 ppb |
| 2015-03-18 | A5B2007-03A | 1.30 ppb |
| 2015-03-19 | A5B2042-01A | 5.20 ppb |
| 2015-03-19 | A5B2026-10A | 0.950 ppb |
| 2015-03-19 | A5B2026-07A | 0.630 ppb |
| 2015-03-19 | A5B2035-07A | 1.60 ppb |
| 2015-03-19 | A5B2042-15A | 0.260 ppb |
| 2015-03-19 | A5B2042-10A | 4.20 ppb |
| 2015-03-19 | A5B2026-13A | 0.770 ppb |
| 2015-03-19 | A5B2042-07A | ND |
| 2015-03-19 | A5B2035-04A | 3.00 ppb |
| 2015-03-19 | A5B2042-04A | 8.30 ppb |
| 2015-03-19 | A5B2035-10A | 1.70 ppb |
| 2015-03-19 | A5B2026-01A | 0.210 ppb |
| 2015-03-19 | A5B2026-04A | ND |
| 2015-03-19 | A5B2035-01A | 3.90 ppb |
| 2015-03-19 | A5B2035-13A | 2.90 ppb |
| 2015-03-19 | A5B2042-13A | 3.50 ppb |
| 2015-03-19 | A5B2026-16A | 0.900 ppb |
| 2015-06-11 | A5E1718-01A | ND |
| 2015-06-11 | A5E1718-04A | 0.310 ppb |
| 2016-11-10 | 5867-041-0720 | ND |
| 2017-11-08 | 2706-033-0935 | ND |
| 2017-11-13 | 2706-029-0725 | ND |
| 2017-11-17 | 1991-002-0710 | 0.567 ppb |
| 2017-11-17 | 1991-012-0800 | 2.82 ppb |
| 2017-11-17 | 1991-031-0740 | 1.76 ppb |
| 2017-11-17 | 1991-041-0725 | 0.0291 ppb |
| 2017-11-21 | 1991-009-0650 | 0.0383 ppb |
| 2017-11-21 | 1991-019-0710 | 0.681 ppb |
| 2017-11-21 | 1991-048-0905 | 3.66 ppb |
| 2017-12-08 | 1991-006-1025 | 0.180 ppb |
| 2017-12-08 | 1991-016-1145 | 4.54 ppb |
| 2017-12-08 | 1991-018-1120 | 1.34 ppb |
| 2017-12-08 | 1991-021-0740 | 2.10 ppb |
| 2017-12-08 | 1991-023-1210 | 4.00 ppb |
| 2017-12-08 | 1991-025-1040 | 0.773 ppb |
| 2017-12-08 | 1991-040-1005 | 0.863 ppb |
| 2017-12-08 | 1991-046-1325 | 0.0690 ppb |