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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

City of Kerrville

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.

 

46

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
20130.202 ppb1512ND - 0.280 ppb
2014ND150ND
2015ND10ND
2016ND60ND
2017ND80ND

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
2012-10-041210228003ND
2013-07-29AC25998ND
2013-08-2635106170011AM0.280 ppb
2013-08-2635106170007AM0.280 ppb
2013-11-1335115870001AM0.260 ppb
2013-11-1335115868009AM0.270 ppb
2013-11-1335115868001AM0.270 ppb
2013-11-1335115868020AM0.260 ppb
2013-11-1335115868004AM0.240 ppb
2013-11-1335115868014AMND
2013-11-1335115868018AM0.240 ppb
2013-11-1335115868023AM0.220 ppb
2013-11-1335115868012AM0.250 ppb
2013-11-1335115868007AMND
2013-11-1335115870003AM0.250 ppb
2013-11-1335115868016AM0.210 ppb
2014-02-10AC41871ND
2014-02-1835127285005AMND
2014-02-1835127285007AMND
2014-02-1835127285011AMND
2014-02-1835127285001AMND
2014-02-1835127285009AMND
2014-02-1835127285003AMND
2014-02-1935127269007AMND
2014-02-1935127269009AMND
2014-02-1935127269005AMND
2014-02-1935127269003AMND
2014-02-1935127269011AMND
2014-02-1935127269001AMND
2014-05-2035139241003AMND
2014-05-2035139241001AMND
2015-01-28AC78082ND
2016-02-01AD20978ND
2016-02-01AD20973ND
2016-04-18AD33309ND
2016-07-05AD42869ND
2016-10-24AD54250ND
2016-10-24AD54249ND
2017-02-13AD70299ND
2017-04-06AD78702ND
2017-05-08AD82959ND
2017-05-08AD82960ND
2017-05-08AD82958ND
2017-05-09AD83255ND
2017-05-09AD83256ND
2017-05-09AD83251ND