Chromium (hexavalent)
California American Water Company - Monterey
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 |
---|---|---|---|---|
2013 | 0.498 ppb | 14 | 13 | ND - 1.62 ppb |
2014 | 0.210 ppb | 55 | 26 | ND - 2.79 ppb |
2015 | 0.195 ppb | 11 | 6 | ND - 1.000 ppb |
2016 | 0.154 ppb | 26 | 2 | ND - 2.23 ppb |
2017 | ND | 5 | 0 | ND |
2018 | ND | 5 | 0 | ND |
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 |
---|---|---|
2013-09-09 | 23390901 | 0.590 ppb |
2013-09-11 | 23391101 | 1.62 ppb |
2013-09-11 | 23386401 | ND |
2013-09-11 | 23389701 | 0.530 ppb |
2013-09-11 | 23387701 | 0.590 ppb |
2013-09-11 | 23387601 | 0.580 ppb |
2013-09-11 | 23386801 | 0.0700 ppb |
2013-09-11 | 23387101 | 0.580 ppb |
2013-10-07 | 23388801 | 0.0700 ppb |
2013-10-08 | 23387001 | 0.640 ppb |
2013-10-30 | 23389101 | 0.380 ppb |
2013-10-31 | 23387801 | 0.600 ppb |
2013-12-16 | 24208001 | 0.0300 ppb |
2013-12-17 | 24206801 | 0.690 ppb |
2014-02-04 | 5810-029-1340 | ND |
2014-02-04 | 5810-051-1100 | 1.50 ppb |
2014-02-05 | 5810-075-1058 | ND |
2014-02-05 | 5810-076-1133 | ND |
2014-02-05 | 5810-077-1018 | ND |
2014-02-11 | 5810-002-1100 | ND |
2014-02-11 | 5810-006-1030 | ND |
2014-02-11 | 5810-020-1245 | ND |
2014-02-11 | 5810-024-1055 | ND |
2014-02-11 | 5810-052-1210 | ND |
2014-02-11 | 5810-074-1040 | ND |
2014-02-12 | 5810-046-1340 | ND |
2014-02-12 | 5810-047-1355 | ND |
2014-02-18 | 5810-017-1335 | ND |
2014-02-18 | 5810-044-1400 | ND |
2014-02-18 | 5810-045-1210 | ND |
2014-02-18 | 5810-054-1225 | ND |
2014-02-19 | 5810-033-1320 | ND |
2014-02-19 | 5810-072-1100 | ND |
2014-02-20 | 5810-016-1300 | ND |
2014-02-24 | 5810-026-1145 | ND |
2014-03-03 | 5810-083-1306 | ND |
2014-03-10 | 24995901 | 0.0400 ppb |
2014-03-10 | 24998501 | 0.650 ppb |
2014-03-10 | 24993901 | 0.650 ppb |
2014-03-10 | 24994001 | 0.640 ppb |
2014-03-11 | 24999601 | 0.0500 ppb |
2014-03-11 | 25000001 | 0.0700 ppb |
2014-03-11 | 24992101 | 0.0400 ppb |
2014-03-11 | 24994401 | 0.0600 ppb |
2014-03-12 | 24993701 | 0.1000 ppb |
2014-03-24 | 24994201 | 0.0900 ppb |
2014-03-26 | 1644-050-1150 | ND |
2014-04-09 | 24999801 | ND |
2014-04-09 | 24994101 | 0.0800 ppb |
2014-05-05 | 25000201 | 0.530 ppb |
2014-05-05 | 25000401 | 1.50 ppb |
2014-05-05 | 24994801 | 0.450 ppb |
2014-05-09 | 24993801 | 0.470 ppb |
2014-05-09 | 24994501 | 0.460 ppb |
2014-05-09 | 24994601 | 0.460 ppb |
2014-05-27 | 5810-073-1030 | ND |
2014-06-11 | 1225-089-1000 | ND |
2014-06-18 | 25824401 | 0.0900 ppb |
2014-06-24 | 25823001 | 0.570 ppb |
2014-11-13 | 1225-048-1350 | 2.79 ppb |
2014-12-16 | 28049401 | ND |
2014-12-16 | 26925101 | 0.0700 ppb |
2014-12-16 | 26924901 | 0.0400 ppb |
2014-12-16 | 26925201 | 0.0500 ppb |
2014-12-18 | 28109801 | 0.0400 ppb |
2014-12-18 | 26925401 | 0.0400 ppb |
2014-12-21 | 1225-075-0630 | ND |
2014-12-21 | 1225-076-0640 | ND |
2014-12-21 | 1225-077-0700 | ND |
2015-05-04 | 29260201 | 0.0500 ppb |
2015-05-04 | 29260101 | 0.0600 ppb |
2015-06-02 | 1225-075-1025 | ND |
2015-06-02 | 1225-076-1035 | ND |
2015-06-02 | 1225-077-1010 | ND |
2015-06-18 | 27426301 | 0.390 ppb |
2015-06-18 | 27426501 | 0.420 ppb |
2015-07-20 | 1225-070-1150 | ND |
2015-07-23 | 29998701 | 0.220 ppb |
2015-07-23 | 29998601 | 1.000 ppb |
2015-09-29 | 1225-083-1325 | ND |
2016-01-20 | 5810-087-1055 | ND |
2016-01-26 | 1225-075-1000 | ND |
2016-01-26 | 1225-076-1010 | ND |
2016-01-26 | 1225-077-1030 | ND |
2016-02-08 | 1225-016-1030 | ND |
2016-02-08 | 1225-017-1000 | ND |
2016-02-08 | 1225-044-1230 | ND |
2016-02-08 | 1225-045-1200 | ND |
2016-02-08 | 1225-047-1100 | ND |
2016-03-08 | 1225-083-1115 | ND |
2016-04-06 | 1225-024-1410 | ND |
2016-04-07 | 1225-082-1010 | ND |
2016-04-19 | 1225-029-1000 | ND |
2016-04-19 | 1225-051-1100 | 2.23 ppb |
2016-04-26 | 1225-048-1115 | 1.78 ppb |
2016-05-12 | 1225-052-1010 | ND |
2016-06-07 | 1225-026-1045 | ND |
2016-06-07 | 1225-072-1000 | ND |
2016-06-07 | 1225-073-1020 | ND |
2016-06-08 | 1225-002-1330 | ND |
2016-06-08 | 1225-006-1300 | ND |
2016-06-08 | 1225-074-1315 | ND |
2016-09-26 | 1225-050-1125 | ND |
2016-09-26 | 1225-070-1450 | ND |
2016-09-30 | 1225-046-1400 | ND |
2016-12-21 | 1225-085-1545 | ND |
2017-01-12 | 1225-082-1331 | ND |
2017-01-25 | 1225-075-1115 | ND |
2017-01-25 | 1225-076-1120 | ND |
2017-01-25 | 1225-077-1130 | ND |
2017-01-25 | 1225-083-1135 | ND |
2018-01-11 | 1225-075-1125 | ND |
2018-01-11 | 1225-076-1135 | ND |
2018-01-11 | 1225-077-1205 | ND |
2018-01-11 | 1225-082-1105 | ND |
2018-01-11 | 1225-083-1155 | ND |