Know Your Environment. Protect Your Health.

Arsenic

The Calverton School

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)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND90ND
2019ND60ND
2020ND40ND
2021ND40ND
2022N/A00N/A
2023N/A00N/A

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
2018-01-25157512_01ND
2018-01-25157398_01ND
2018-02-05E18002808002ND
2018-06-01159735_01ND
2018-06-01159814_01ND
2018-08-10162664_01ND
2018-08-10162750_01ND
2018-10-16165358_01ND
2018-10-16165438_01ND
2019-01-25167483_01ND
2019-01-25167601_01ND
2019-04-04169752_01ND
2019-04-05169664_01ND
2019-08-02172906_01ND
2019-08-02172998_01ND
2020-01-21180700_01ND
2020-03-03E20002997003ND
2020-07-14188421_01ND
2020-07-14188529_01ND
2021-01-12198019_01ND
2021-01-12198152_01ND
2021-09-10209776_02ND
2021-09-10209778_02ND