Know Your Environment. Protect Your Health.

Arsenic

Adams County W/a #2-south

Arsenic is a potent carcinogen and common contaminant in drinking water. Arsenic causes thousands of cases of cancer each year in the U.S. Click here to read more about arsenic.

 

23

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.280 ppb51ND - 1.40 ppb
2019N/A00N/A
20200.460 ppb104ND - 2.40 ppb
2021N/A00N/A
20220.783 ppb62ND - 2.80 ppb
20232.20 ppb222.20 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.004 ppb

The EWG Health Guideline of 0.004 ppb for arsenic was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL): 10 ppb

The legal limit for arsenic, established in 2001, was based on costs for arsenic removal, as calculated at the time that the standard was set. This limit does not fully protect against the risk of cancer due to arsenic exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2018-09-10180911-024INND
2018-09-10180911-025INND
2018-09-10180911-026INND
2018-09-10180911-027INND
2018-09-17180918-002IN1.40 ppb
2020-03-30200331-033IN2.40 ppb
2020-03-30200331-036INND
2020-03-30200331-035IN0.700 ppb
2020-03-30200331-034IN0.800 ppb
2020-03-30200331-032INND
2020-04-06IN-200407-024ND
2020-04-06IN-200407-023ND
2020-04-06IN-200407-022ND
2020-04-06IN-200407-021ND
2020-04-06IN-200407-0200.700 ppb
2022-05-03IN-220504-005ND
2022-05-03IN-220504-006ND
2022-05-03IN-220504-0071.90 ppb
2022-05-03IN-220504-008ND
2022-05-03IN-220504-009ND
2022-11-30IN-221201-0252.80 ppb
2023-02-21IN-230222-0042.20 ppb
2023-05-15IN-230516-0232.20 ppb