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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

City of Granbury

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

 

75

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND160ND
20140.303 ppb313ND - 5.30 ppb
20151.49 ppb330.860 ppb - 2.00 ppb
2016ND70ND
20170.244 ppb91ND - 2.20 ppb
20181.20 ppb32ND - 1.80 ppb
20190.433 ppb62ND - 1.40 ppb

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
2013-12-182948746ND
2013-12-182948742ND
2013-12-182948807ND
2013-12-182948726ND
2013-12-182948858ND
2013-12-182948828ND
2013-12-182948905ND
2013-12-182948915ND
2013-12-182948768ND
2013-12-182948733ND
2013-12-182948887ND
2013-12-182948878ND
2013-12-182948897ND
2013-12-182948869ND
2013-12-192949463ND
2013-12-192950137ND
2014-01-152958379ND
2014-01-152958381ND
2014-02-192977429ND
2014-02-26Q14064480075.30 ppb
2014-03-112990040ND
2014-03-192994538ND
2014-04-013001734ND
2014-06-173047563ND
2014-06-173047645ND
2014-06-173047285ND
2014-06-173047571ND
2014-06-173047435ND
2014-06-173047596ND
2014-06-173047263ND
2014-06-173047358ND
2014-06-173047348ND
2014-06-173047541ND
2014-06-173047429ND
2014-06-173047587ND
2014-06-263053993ND
2014-06-263053828ND
2014-06-263053890ND
2014-06-263053841ND
2014-06-263053861ND
2014-06-263053977ND
2014-06-263053957ND
2014-07-09Q14268080152.60 ppb
2014-07-143062650ND
2014-09-173106662ND
2014-09-173106658ND
2014-10-22Q14535030091.50 ppb
2015-06-18Q15229660200.860 ppb
2015-06-18Q15229660191.60 ppb
2015-06-18Q15229660182.00 ppb
2016-01-14Q1601671011ND
2016-01-14Q1601671010ND
2016-01-14Q1601671009ND
2016-01-14Q1601671008ND
2016-01-14Q1601671007ND
2016-01-14Q1601671006ND
2016-05-31Q1621308001ND
2017-07-06Q17275150132.20 ppb
2017-09-19Q1744801001ND
2017-09-19Q1744801016ND
2017-10-04Q1748839030ND
2017-10-04Q1748839029ND
2017-10-04Q1748839028ND
2017-10-04Q1748839027ND
2017-10-04Q1748839026ND
2017-10-04Q1748839002ND
2018-05-02Q1817630004ND
2018-05-02Q18176300031.80 ppb
2018-05-02Q18176300191.80 ppb
2019-03-18Q1911097025ND
2019-03-18Q19110970241.40 ppb
2019-03-18Q1911097023ND
2019-03-18Q1911097022ND
2019-03-18Q1911097021ND
2019-05-09Q19230930201.20 ppb