Arsenic
Woodridge Village
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 1.40 ppb | 3 | 2 | ND - 2.90 ppb |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | 0.575 ppb | 2 | 1 | ND - 1.15 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 |
|---|---|---|
| 2018-05-01 | PRI EHS1800018630 | ND |
| 2018-09-13 | PRI J8I0851-01 | 1.30 ppb |
| 2018-09-13 | PRI J8I0851-02 | 2.90 ppb |
| 2019-08-08 | PRI J9H0844 | ND |
| 2020-08-11 | PRI S030459 | ND |
| 2020-08-12 | PRI S000030457 | ND |
| 2021-12-22 | IOCS S050118 | ND |
| 2022-02-07 | PRI S045676 | ND |
| 2023-11-01 | IOCS EHS2300064396 | 1.15 ppb |
| 2023-11-01 | IOCS EHSS2300064397 | ND |