Know Your Environment. Protect Your Health.

Mercury (inorganic)

Woodridge Village

Mercury is a potent neurotoxin that also damages the kidneys and other internal organs. Mercury enters drinking water from industrial pollution, mining wastes and coal-fired power plants.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND10ND
2020ND20ND
2021ND10ND
2022ND10ND
2023ND20ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 1.2 ppb

The EWG Health Guideline of 1.2 ppb for mercury (inorganic) 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 harm to internal organs.

EPA Maximum Contaminant
Level (MCL): 2 ppb

The legal limit for inorganic mercury, established in 1991, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s. This limit does not include any additional consideration of children’s health.

ppb = parts per billion

All test results

Date Lab ID Result
2018-05-01PRI EHS1800018630ND
2018-09-13PRI J8I0851-01ND
2018-09-13PRI J8I0851-02ND
2019-08-08PRI J9H0844ND
2020-08-11PRI S030459ND
2020-08-12PRI S000030457ND
2021-12-22IOCS S050118ND
2022-02-07PRI S045676ND
2023-11-01IOCS EHS2300064396ND
2023-11-01IOCS EHSS2300064397ND