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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

California American Water Company - Monterey

Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

MORE ABOUT THIS CONTAMINANT

 

128

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.736 ppb1412ND - 1.70 ppb
20140.292 ppb5912ND - 12.0 ppb
20150.500 ppb85ND - 1.50 ppb
20160.478 ppb231ND - 11.0 ppb
2017ND10ND
2018ND10ND
2019ND220ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.

ppb = parts per billion

All test results

Date Lab ID Result
2013-09-09233909010.800 ppb
2013-09-11233911011.70 ppb
2013-09-11233864010.200 ppb
2013-09-11233897010.800 ppb
2013-09-11233877010.800 ppb
2013-09-11233876010.800 ppb
2013-09-11233871011.40 ppb
2013-09-11233868010.300 ppb
2013-10-0723388801ND
2013-10-08233870010.700 ppb
2013-10-30233891010.600 ppb
2013-10-31233878010.800 ppb
2013-12-1624208001ND
2013-12-17242068011.40 ppb
2014-01-211225-089-1140ND
2014-01-221225-092-1145ND
2014-02-045810-029-1340ND
2014-02-045810-051-1100ND
2014-02-055810-075-1058ND
2014-02-055810-076-1133ND
2014-02-055810-077-1018ND
2014-02-115810-002-1100ND
2014-02-115810-006-1030ND
2014-02-115810-020-1245ND
2014-02-115810-024-1055ND
2014-02-115810-052-1210ND
2014-02-115810-074-1040ND
2014-02-125810-046-1340ND
2014-02-125810-047-1355ND
2014-02-185810-017-1335ND
2014-02-185810-044-1400ND
2014-02-185810-045-1210ND
2014-02-181225-054-1225ND
2014-02-185810-054-1225ND
2014-02-195810-033-1320ND
2014-02-195810-072-1100ND
2014-02-205810-016-1300ND
2014-02-245810-026-1145ND
2014-03-035810-083-1306ND
2014-03-10249959010.400 ppb
2014-03-10249985010.700 ppb
2014-03-10249939010.700 ppb
2014-03-10249940010.800 ppb
2014-03-1124999601ND
2014-03-1125000001ND
2014-03-1124992101ND
2014-03-11249944010.200 ppb
2014-03-1224993701ND
2014-03-2424994201ND
2014-03-265810-050-1150ND
2014-04-081225-082-1125ND
2014-04-0924999801ND
2014-04-09249941010.200 ppb
2014-04-101225-061-1250ND
2014-04-241225-092-1005ND
2014-04-291225-089-1030ND
2014-05-051225-079-1420ND
2014-05-09249946010.500 ppb
2014-05-09249945010.600 ppb
2014-05-09249938010.300 ppb
2014-05-275810-073-1030ND
2014-06-111225-053-1000ND
2014-06-111225-089-1000ND
2014-06-171225-092-115012.0 ppb
2014-06-18258244010.300 ppb
2014-06-24258230010.500 ppb
2014-12-1628049401ND
2014-12-1626925101ND
2014-12-1626924901ND
2014-12-1626925201ND
2014-12-1828109801ND
2014-12-1826925401ND
2014-12-231225-085-0915ND
2015-02-101225-085-1330ND
2015-04-091225-082-0935ND
2015-05-04292602011.50 ppb
2015-05-0429260101ND
2015-06-18274263010.500 ppb
2015-06-18274265010.600 ppb
2015-07-23299987010.200 ppb
2015-07-23299986011.20 ppb
2016-01-071225-085-1505ND
2016-01-121225-046-1355ND
2016-01-205810-087-1055ND
2016-02-081225-016-1030ND
2016-02-081225-017-1000ND
2016-02-081225-044-1230ND
2016-02-081225-045-1200ND
2016-02-081225-047-1100ND
2016-04-061225-024-1410ND
2016-04-071225-082-1010ND
2016-04-191225-029-1000ND
2016-04-191225-051-110011.0 ppb
2016-04-261225-048-1115ND
2016-05-121225-052-1010ND
2016-06-071225-026-1045ND
2016-06-071225-072-1000ND
2016-06-071225-073-1020ND
2016-06-081225-002-1330ND
2016-06-081225-006-1300ND
2016-06-081225-074-1315ND
2016-08-221225-070-1010ND
2016-08-291225-050-1215ND
2016-12-201225-085-1135ND
2017-04-171225-082-1045ND
2018-05-011225-082-0920ND
2019-01-151225-085-1545ND
2019-02-071225-016-1335ND
2019-02-071225-017-1300ND
2019-02-071225-044-1650ND
2019-02-071225-045-1710ND
2019-02-071225-046-1430ND
2019-02-071225-047-1515ND
2019-03-191225-029-1330ND
2019-03-191225-051-1230ND
2019-03-201225-024-1228ND
2019-03-211225-050-1415ND
2019-04-221225-072-1640ND
2019-04-221225-073-1600ND
2019-04-221225-087-1630ND
2019-04-241225-002-1430ND
2019-04-241225-006-1400ND
2019-04-241225-052-1330ND
2019-04-241225-074-1450ND
2019-05-061225-082-1350ND
2019-07-241225-048-1420ND
2019-08-071225-026-1230ND
2019-08-081225-070-1530ND