Know Your Environment. Protect Your Health.

Arsenic

Manchester Water Department

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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND20ND
2020ND80ND
2021ND20ND
2022ND20ND
2023ND80ND

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
2018-02-05AA82672-IOC1ND
2018-02-05AA82673-IOC1ND
2018-02-05AA82666-IOC1ND
2018-02-06AA82689-IOC1ND
2018-02-06AA82690-IOC1ND
2018-02-07AA82711-IOC1ND
2018-02-07AA82712-IOC1ND
2018-02-23AA82899-IOCRND
2019-05-03AA88242-IOC1ND
2019-05-16AA88408-IOCRND
2020-10-01AA94988-IOCRND
2020-12-07AA95917-IOC1ND
2020-12-07AA95918-IOC1ND
2020-12-08AA95934-IOC1ND
2020-12-08AA95935-IOC1ND
2020-12-09AA95952-IOC1ND
2020-12-09AA95953-IOC1ND
2020-12-10AA95963-IOC1ND
2021-11-04211104-1-06IOCND
2021-11-04211104-1-04RAW IOCND
2022-05-13220513-1-04 RAW IOCND
2022-06-03220603-1-06IOCND
2023-12-04231204-3-01IOCND
2023-12-04231204-3-02 IOCND
2023-12-05231205-1-06 IOCND
2023-12-05231205-3-03 IOCND
2023-12-05231205-3-04 IOCND
2023-12-05231205-1-04 RAW IOCND
2023-12-06231206-3-05 IOCND
2023-12-06231206-3-06 IOCND