Know Your Environment. Protect Your Health.

Chromium (total)

Yadkinville, Town of

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND10ND
2020ND40ND
2021ND20ND
2022ND20ND
2023ND20ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-08-3092397772001INND
2018-10-0292401702003INND
2019-10-1092449188001_37712ND
2020-11-1792506633001A_37712ND
2020-11-1792506633001_37712ND
2020-11-1792506633002A_37712ND
2020-11-1792506633002_37712ND
2021-11-1092572134001_37712ND
2021-11-1092572134002_37712ND
2022-08-1192620221001_12710ND
2022-09-0792624365001_12710ND
2023-01-0292644697001_12710ND
2023-01-0592645447001_37712ND