Know Your Environment. Protect Your Health.

Arsenic

East Lyme Water & Sewer Commission

NOTE: East Lyme Water & Sewer Commission purchases water from New London Department of Public Utilities which is required to test for arsenic. Sample information shown below was taken by New London Department of Public Utilities.

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)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND20ND
2020ND40ND
2021ND20ND
2022ND20ND
2023ND50ND

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: East Lyme Water & Sewer Commission purchases water from New London Department of Public Utilities which is required to test for arsenic. Sample information shown below was taken by New London Department of Public Utilities.

Date Lab ID Result
2018-11-2928420IOC1ND
2018-11-2928425IOCRND
2019-11-2030473IOC1ND
2019-11-2030469IOCRND
2020-12-0132746IOC1ND
2020-12-0132743IOCRND
2021-10-2734801IOC1ND
2021-10-2734800IOCRND
2022-09-1536582IOC1ND
2022-09-1536581IOCRND
2023-09-1438752IOC1ND
2023-09-1438758IOCRND