Know Your Environment. Protect Your Health.

Chromium (total)

Annapolis PWS

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND80ND
2020ND80ND
2021ND80ND
2022ND80ND
2023ND80ND

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
2018-01-29AD11500ND
2018-01-29AD11499ND
2018-05-02AD18215ND
2018-05-02AD18214ND
2018-07-10AD29393ND
2018-07-10AD29394ND
2018-10-17AD34548ND
2018-10-17AD34549ND
2019-01-10AD37860ND
2019-01-10AD37861ND
2019-04-15AD46284ND
2019-04-15AD46285ND
2019-07-23AD52085ND
2019-07-23AD52084ND
2019-10-22AD56862ND
2019-10-22AD56863ND
2020-02-03AD60672ND
2020-02-03AD60671ND
2020-06-032010512ND
2020-06-032010513ND
2020-07-272011670ND
2020-07-272011669ND
2020-10-292016617ND
2020-10-292016616ND
2021-01-212020217ND
2021-01-212020216ND
2021-04-192103830ND
2021-04-192103829ND
2021-07-192113683ND
2021-07-192113682ND
2021-10-262118144ND
2021-10-262118145ND
2022-01-242122168ND
2022-01-242122169ND
2022-04-132204382ND
2022-04-132204381ND
2022-07-122214771ND
2022-07-122214772ND
2022-10-242219680ND
2022-10-242219681ND
2023-02-142301319ND
2023-02-142301320ND
2023-04-192303488ND
2023-04-192303489ND
2023-07-192311679ND
2023-07-192311680ND
2023-10-162316861ND
2023-10-162316860ND