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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Water Authority of Western Nassau

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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99

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.162 ppb217ND - 0.680 ppb
20150.195 ppb2511ND - 1.10 ppb
2016ND80ND
2017ND130ND
2018ND130ND
2019ND190ND

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
2014-04-031404334-002-POCSND
2014-04-041404413-002-PRIND
2014-04-154B37-001-PRIND
2014-04-151404B37-003-PRIND
2014-06-261406K18-001-PRIND
2014-07-241407I28-002-PRIND
2014-07-241407I28-004-PRIND
2014-08-051408272-002-PRIND
2014-08-071408502-002-PRIND
2014-08-191408E03-002-PRIND
2014-08-191408E03-004-PRIND
2014-12-2335169517003AM0.680 ppb
2014-12-2335169517005AMND
2014-12-2335169517007AMND
2014-12-2335169517011AM0.460 ppb
2014-12-2335169517009AM0.680 ppb
2014-12-2335169517001AM0.430 ppb
2014-12-2335169517013AMND
2014-12-2935169790005AM0.270 ppb
2014-12-2935169790001AM0.580 ppb
2014-12-2935169790003AM0.300 ppb
2015-02-191502B82-002-PRIND
2015-03-171503B91-002-PRIND
2015-03-191503D92-002-PRIND
2015-03-311503L73-002-PRIND
2015-04-161504D00-002-PRIND
2015-04-2815104L90-002ND
2015-05-261505I52-003-PRIND
2015-05-261505I52-001-PRIND
2015-05-261505I52-002-PRIND
2015-06-2535195584001AM0.220 ppb
2015-07-071507395-002-PRIND
2015-07-2135200053003AM0.620 ppb
2015-07-2135200053013AMND
2015-07-2135200053007AMND
2015-07-2135200053005AM1.10 ppb
2015-07-2335200053009AMND
2015-07-2335200053001AM0.370 ppb
2015-07-2735200053017AM0.260 ppb
2015-07-2735200053015AM0.620 ppb
2015-07-2735200053019AM0.260 ppb
2015-08-2035203738003AM0.250 ppb
2015-08-2035203738001AM0.410 ppb
2015-09-1735208589003AM0.410 ppb
2015-11-1235216561003AMND
2015-11-1235216561001AM0.360 ppb
2016-02-031602317-004-PRIND
2016-02-031602317-006-PRIND
2016-03-311603O84-001-PRIND
2016-06-071606661-002-PRIND
2016-06-0916069-002-PRIND
2016-06-231606O29-002-PRIND
2016-08-021608251-002-PRIND
2016-08-041608542-001-PRIND
2017-01-17709292007-PRIND
2017-01-17709292009-PRIND
2017-01-17709292004-PRIND
2017-01-17709292008-PRIND
2017-01-19709502002-PRIND
2017-01-19709502004-PRIND
2017-01-19709502006-PRIND
2017-02-027010479002-PRIND
2017-05-237019330002-PRIND
2017-05-257019670004-PRIND
2017-05-25701967002-PRIND
2017-05-257019670003-PRIND
2017-08-017025877002-PRIND
2018-01-167040545002-PRIND
2018-01-167040545005-PRIND
2018-01-167040545004-PRIND
2018-01-16704054003-PRIND
2018-01-187040828005-PRIND
2018-01-187040828003-PRIND
2018-01-187040828011-PRIND
2018-01-187040828007-PRIND
2018-02-157043097002-PRIND
2018-06-197055477002-PRIND
2018-06-197055477001-PRIND
2018-06-197055477003-PRIND
2018-07-197058888002-PRIND
2019-01-297077818005-PRIND
2019-01-297077818007-PRIND
2019-01-297077818009-PRIND
2019-01-297077818010-PRIND
2019-01-317078075004-PRIND
2019-01-317078075011-PRIND
2019-01-317078075002ND
2019-01-317078075001-PRIND
2019-01-317078075010-PRIND
2019-01-317078075007-PRIND
2019-02-147079642002-PRIND
2019-04-257087239001-PRIND
2019-06-047092027002-PRIND
2019-06-047092027003-PRIND
2019-06-047092027001-PRIND
2019-08-2770102934002-PRIND
2019-09-1070104400002-PRIND
2019-09-2470106092002-PRIND
2019-12-1770115702002-PRIND