Know Your Environment. Protect Your Health.

Arsenic

Town of Westernport

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2018-04-24E18003832004ND
2018-05-09692_261_1ND
2019-04-23692-271-1ND
2020-06-02E20003710002ND
2020-08-26692-285-1ND
2021-02-17692_291_1_2ND
2021-05-18E21003364005ND
2022-04-28E2201037103ND
2022-08-17FWH0173ND
2023-02-21FXA0001ND