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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

City of Sherman

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.

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51

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0912 ppb262ND - 1.60 ppb
20150.147 ppb31ND - 0.440 ppb
20161.11 ppb94ND - 6.00 ppb
20172.43 ppb32ND - 5.90 ppb
2018ND10ND
2019ND90ND

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
2014-03-24Q1409267007ND
2014-03-24Q1409267011ND
2014-03-24Q1409267013ND
2014-03-24Q1409267005ND
2014-03-24Q1409267001ND
2014-03-24Q1409267003ND
2014-03-24Q1409267009ND
2014-03-31Q1410032003ND
2014-03-31Q1410032005ND
2014-03-31Q1410032001ND
2014-04-22Q14127620031.60 ppb
2014-06-16Q14214030050.770 ppb
2014-09-29Q1448928019ND
2014-09-29Q1448928005ND
2014-09-29Q1448928013ND
2014-09-29Q1448928011ND
2014-09-29Q1448928009ND
2014-09-29Q1448928017ND
2014-09-29Q1448928003ND
2014-09-29Q1448928023ND
2014-09-29Q1448928021ND
2014-09-29Q1448928007ND
2014-09-29Q1448928015ND
2014-09-29Q1448928001ND
2014-12-29Q1460911001ND
2014-12-29Q1460911003ND
2015-03-17Q15098880040.440 ppb
2015-04-23Q1515129001ND
2015-04-23Q1515129003ND
2016-01-20Q16024790190.570 ppb
2016-01-20Q16024790182.20 ppb
2016-01-20Q16024790171.20 ppb
2016-04-11Q16142140066.00 ppb
2016-11-08Q1648503006ND
2016-11-08Q1648503005ND
2016-11-08Q1648503004ND
2016-11-08Q1648503003ND
2016-11-08Q1648503002ND
2017-01-12Q17015560125.90 ppb
2017-01-12Q17015560041.40 ppb
2017-07-11Q1728660017ND
2018-07-05Q1826605004ND
2019-02-12Q1906434014ND
2019-02-12Q1906434013ND
2019-02-12Q1906434012ND
2019-02-12Q1906434011ND
2019-05-07Q1922272015ND
2019-05-07Q1922272019ND
2019-05-07Q1922272018ND
2019-05-07Q1922272017ND
2019-05-07Q1922272016ND