Know Your Environment. Protect Your Health.

Arsenic

City of Center

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND20ND
2021ND20ND
2022ND20ND
20231.15 ppb21ND - 2.30 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
2018-04-30Q1817448001ND
2018-05-03Q1818013002ND
2019-05-15Q1925671006ND
2019-05-15Q1925671007ND
2020-03-10Q2009082005ND
2020-03-10Q2009082006ND
2021-03-15Q2106633002ND
2021-09-02Q2123959002ND
2022-03-08Q2207771002ND
2022-03-08Q2207771006ND
2023-02-08Q2304971005ND
2023-07-20Q23287700042.30 ppb