Know Your Environment. Protect Your Health.

Arsenic

Otter Creek Lake Utilities District

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.

 

7

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND10ND
20200.632 ppb330.553 ppb - 0.705 ppb
20210.590 ppb110.590 ppb
2022N/A00N/A
20230.915 ppb220.835 ppb - 0.995 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
2019-05-1419E0470-01ND
2020-04-142004929-001A0.637 ppb
2020-04-142004929-002A0.553 ppb
2020-04-142004929-003A0.705 ppb
2021-05-042105159-001A0.590 ppb
2023-06-072306682-001A0.835 ppb
2023-06-072306682-002A0.995 ppb