EWG's Tap Water Database — 2019 UPDATE


Chromium (total)

Bridgeport Township

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.





Samples exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
20130.513 ppb440.380 ppb - 0.630 ppb
20140.268 ppb660.222 ppb - 0.332 ppb
20150.235 ppb220.205 ppb - 0.264 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
2014-05-20790737-115150.222 ppb
2014-06-24799133-117450.268 ppb
2014-08-06808899-120410.332 ppb
2014-08-06808901-120410.306 ppb
2014-11-12831354-129790.252 ppb
2014-11-12831352-129790.230 ppb
2015-02-10842798-134220.264 ppb
2015-02-10842800-134220.205 ppb