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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Johnson County SUD

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

 

87

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0427 ppb6211ND - 0.298 ppb
2015ND20ND
20162.54 ppb11111.60 ppb - 3.60 ppb
20173.15 ppb222.20 ppb - 4.10 ppb
2018N/A00N/A
20191.39 ppb10101.20 ppb - 1.70 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
2014-01-28Q1402418005ND
2014-01-28Q1402418007ND
2014-01-28Q14024180010.277 ppb
2014-01-28Q1402418009ND
2014-01-28Q1402418003ND
2014-01-28Q1402418015ND
2014-01-28Q14024180110.247 ppb
2014-01-28Q1402418013ND
2014-01-29Q1402781021ND
2014-01-29Q1402781001ND
2014-01-29Q1402781009ND
2014-01-29Q1402781019ND
2014-01-29Q1402781017ND
2014-01-29Q1402781015ND
2014-01-29Q1402781013ND
2014-01-29Q1402781003ND
2014-01-29Q1402781007ND
2014-01-29Q1402781005ND
2014-01-29Q1402781011ND
2014-04-28Q1413464009ND
2014-04-28Q1413464017ND
2014-04-28Q1413464003ND
2014-04-28Q14134640130.217 ppb
2014-04-28Q1413464005ND
2014-04-28Q14134640150.222 ppb
2014-04-28Q1413464007ND
2014-04-28Q1413464011ND
2014-04-28Q1413464001ND
2014-04-28Q1413464021ND
2014-04-28Q1413464019ND
2014-07-22Q1429828019ND
2014-07-22Q1429828003ND
2014-07-22Q1429828011ND
2014-07-22Q1429828005ND
2014-07-22Q14298280010.222 ppb
2014-07-22Q14298280230.289 ppb
2014-07-22Q1429828031ND
2014-07-22Q1429828017ND
2014-07-22Q1429828037ND
2014-07-22Q1429828029ND
2014-07-22Q1429828009ND
2014-07-22Q1429828013ND
2014-07-22Q14298280150.223 ppb
2014-07-22Q1429828025ND
2014-07-22Q1429828033ND
2014-07-22Q1429828027ND
2014-07-22Q1429828035ND
2014-07-22Q1429828007ND
2014-07-22Q14298280210.298 ppb
2014-10-28Q1454147007ND
2014-10-28Q14541470150.229 ppb
2014-10-28Q14541470170.219 ppb
2014-10-28Q1454147003ND
2014-10-28Q1454147005ND
2014-10-28Q14541470190.204 ppb
2014-10-28Q1454147001ND
2014-10-28Q1454147021ND
2014-10-28Q1454147023ND
2014-10-28Q1454147025ND
2014-10-28Q1454147013ND
2014-10-28Q1454147011ND
2014-10-28Q1454147009ND
2015-04-16Q1514326003ND
2015-04-16Q1514326001ND
2016-03-17Q16112680213.00 ppb
2016-03-17Q16112680203.00 ppb
2016-03-17Q16112680193.20 ppb
2016-03-17Q16112680183.60 ppb
2016-03-17Q16112680173.50 ppb
2016-06-01Q16216800072.30 ppb
2016-06-01Q16216800081.60 ppb
2016-11-21Q16509440192.40 ppb
2016-11-21Q16509440041.70 ppb
2016-11-21Q16509440182.00 ppb
2016-11-21Q16509440031.60 ppb
2017-02-14Q17066870114.10 ppb
2017-05-04Q17184330012.20 ppb
2019-02-20Q19075290121.40 ppb
2019-02-20Q19075290311.30 ppb
2019-02-20Q19075290111.50 ppb
2019-02-20Q19075290301.40 ppb
2019-02-20Q19075290101.20 ppb
2019-02-20Q19075290091.40 ppb
2019-02-20Q19075290291.20 ppb
2019-05-21Q19274290091.70 ppb
2019-05-21Q19274290101.50 ppb
2019-05-21Q19274290081.30 ppb