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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

SBNDO County Service Area 70J

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.

 

98

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
201316.9 ppb1514ND - 29.0 ppb
201415.1 ppb1916ND - 23.0 ppb
201517.6 ppb1817ND - 22.0 ppb
201619.3 ppb202012.0 ppb - 26.0 ppb
201719.3 ppb252510.00 ppb - 28.0 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
2012-10-313761-002-1115ND
2013-01-113761-001-115020.0 ppb
2013-01-113761-003-110511.0 ppb
2013-01-113761-002-105520.0 ppb
2013-01-113761-004-102520.0 ppb
2013-02-083761-005-100021.0 ppb
2013-07-233761-003-135011.0 ppb
2013-07-233761-002-142529.0 ppb
2013-07-313761-005-100019.0 ppb
2013-07-313761-004-104019.0 ppb
2013-07-313761-001-111515.0 ppb
2013-10-173761-004-111513.0 ppb
2013-10-173761-001-110015.0 ppb
2013-10-173761-003-0945ND
2013-10-173761-002-105020.0 ppb
2013-10-183761-005-101020.0 ppb
2014-01-103761-002-100018.0 ppb
2014-01-103761-003-0925ND
2014-01-103761-001-102512.0 ppb
2014-01-163761-005-140021.0 ppb
2014-02-123761-004-104014.0 ppb
2014-04-033761-001-140015.0 ppb
2014-04-033761-002-121021.0 ppb
2014-04-033761-003-111013.0 ppb
2014-04-033761-004-114522.0 ppb
2014-05-083761-005-102323.0 ppb
2014-07-083761-002-144520.0 ppb
2014-07-083761-005-120020.0 ppb
2014-07-083761-001-140015.0 ppb
2014-07-103761-003-1425ND
2014-07-103761-004-132519.0 ppb
2014-10-063761-005-094017.0 ppb
2014-10-063761-001-115517.0 ppb
2014-10-063761-002-112519.0 ppb
2014-10-063761-003-1045ND
2015-01-063761-005-121022.0 ppb
2015-01-063761-001-130516.0 ppb
2015-01-063761-002-135021.0 ppb
2015-01-063761-003-142513.0 ppb
2015-04-063761-001-124016.0 ppb
2015-04-063761-002-115522.0 ppb
2015-04-063761-003-1035ND
2015-04-063761-005-095021.0 ppb
2015-07-083761-004-123018.0 ppb
2015-07-083761-001-132517.0 ppb
2015-07-083761-002-125021.0 ppb
2015-07-083761-003-114513.0 ppb
2015-07-083761-005-104019.0 ppb
2015-10-063761-004-120518.0 ppb
2015-10-063761-001-124522.0 ppb
2015-10-063761-002-112020.0 ppb
2015-10-063761-003-115018.0 ppb
2015-10-223761-005-114520.0 ppb
2016-01-053761-004-112519.0 ppb
2016-01-053761-005-095523.0 ppb
2016-01-053761-002-115519.0 ppb
2016-01-053761-003-104013.0 ppb
2016-01-053761-001-124016.0 ppb
2016-04-113761-003-095020.0 ppb
2016-04-113761-004-103021.0 ppb
2016-04-113761-002-112019.0 ppb
2016-05-103761-005-123516.0 ppb
2016-08-023761-004-113020.0 ppb
2016-08-023761-005-095024.0 ppb
2016-08-023761-003-105013.0 ppb
2016-08-023761-002-120022.0 ppb
2016-08-043761-005-135020.0 ppb
2016-09-143761-001-124518.0 ppb
2016-11-023761-003-104012.0 ppb
2016-11-023761-005-095020.0 ppb
2016-11-023761-002-114526.0 ppb
2016-11-023761-004-111520.0 ppb
2016-11-023761-001-123024.0 ppb
2017-01-043761-001-130516.0 ppb
2017-01-043761-002-123520.0 ppb
2017-01-043761-004-115020.0 ppb
2017-01-043761-005-101022.0 ppb
2017-01-043761-003-111012.0 ppb
2017-02-073761-002-123023.0 ppb
2017-02-073761-004-120021.0 ppb
2017-02-073761-003-111515.0 ppb
2017-02-073761-001-130022.0 ppb
2017-02-083761-005-100025.0 ppb
2017-05-023761-002-100023.0 ppb
2017-05-023761-003-090011.0 ppb
2017-05-023761-004-093022.0 ppb
2017-05-023761-001-120020.0 ppb
2017-05-313761-005-122528.0 ppb
2017-08-083761-003-103010.00 ppb
2017-08-083761-001-123016.0 ppb
2017-08-083761-002-115518.0 ppb
2017-08-083761-005-094018.0 ppb
2017-08-083761-004-111517.0 ppb
2017-11-063761-001-121519.0 ppb
2017-11-063761-002-115024.0 ppb
2017-11-063761-005-125524.0 ppb
2017-11-063761-004-112022.0 ppb
2017-11-063761-003-110014.0 ppb