Know Your Environment. Protect Your Health.

Arsenic

Williamston, Town of

NOTE: Williamston, Town of purchases water from Martin County Regional WASA which is required to test for arsenic. Sample information shown below was taken by Martin County Regional WASA.

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019N/A00N/A
2020ND10ND
2021ND30ND
2022ND10ND
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

NOTE: Williamston, Town of purchases water from Martin County Regional WASA which is required to test for arsenic. Sample information shown below was taken by Martin County Regional WASA.

Date Lab ID Result
2018-01-037442-010318-E01IND
2020-01-087442-010820-E01IND
2020-01-087442A-010820-E01IND
2021-06-027451-060221-E01IND
2022-06-017451-060122-E01IND
2023-06-077451-060723-E01IND