Know Your Environment. Protect Your Health.

Chromium (total)

Adams County W/a #2-south

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.90 ppb550.500 ppb - 3.80 ppb
2019N/A00N/A
20200.310 ppb104ND - 1.10 ppb
2021N/A00N/A
20221.30 ppb660.700 ppb - 2.00 ppb
20231.85 ppb221.000 ppb - 2.70 ppb

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
2018-09-10180911-024IN0.500 ppb
2018-09-10180911-025IN2.30 ppb
2018-09-10180911-026IN2.20 ppb
2018-09-10180911-027IN3.80 ppb
2018-09-17180918-002IN0.700 ppb
2020-03-30200331-033IN1.10 ppb
2020-03-30200331-036INND
2020-03-30200331-035IN0.600 ppb
2020-03-30200331-034IN0.700 ppb
2020-03-30200331-032IN0.700 ppb
2020-04-06IN-200407-024ND
2020-04-06IN-200407-023ND
2020-04-06IN-200407-022ND
2020-04-06IN-200407-021ND
2020-04-06IN-200407-020ND
2022-05-03IN-220504-0050.900 ppb
2022-05-03IN-220504-0060.800 ppb
2022-05-03IN-220504-0071.80 ppb
2022-05-03IN-220504-0082.00 ppb
2022-05-03IN-220504-0091.60 ppb
2022-11-30IN-221201-0250.700 ppb
2023-02-21IN-230222-0041.000 ppb
2023-05-15IN-230516-0232.70 ppb