Know Your Environment. Protect Your Health.

Mercury (inorganic)

Beauregard Water Works District #3

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.

 

44

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND220ND
2019N/A00N/A
2020N/A00N/A
2021ND110ND
2022N/A00N/A
2023ND110ND

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
2018-02-27AE20777ND
2018-02-27AE20777ND
2018-03-19AE21166ND
2018-03-19AE21163ND
2018-03-19AE21154ND
2018-03-19AE21157ND
2018-03-19AE21160ND
2018-03-19AE21163ND
2018-03-19AE21166ND
2018-03-19AE21160ND
2018-03-19AE21157ND
2018-03-19AE21154ND
2018-04-16AE21403ND
2018-04-16AE21400ND
2018-04-16AE21412ND
2018-04-16AE21406ND
2018-04-16AE21403ND
2018-04-16AE21400ND
2018-04-16AE21412ND
2018-04-16AE21409ND
2018-04-16AE21406ND
2018-04-16AE21409ND
2021-02-02B2100535-003ND
2021-02-02B2100535-002ND
2021-02-02B2100535-001ND
2021-02-02B2100535-004ND
2021-03-16B2101237-002ND
2021-03-16B2101237-003ND
2021-03-16B2101237-004ND
2021-03-16B2101237-005ND
2021-03-16B2101237-001ND
2021-04-27B2101879-001ND
2021-04-27B2101879-002ND
2023-07-24B2302949-001ND
2023-07-24B2302949-002ND
2023-07-24B2302949-003ND
2023-07-24B2302949-004ND
2023-07-24B2302949-005ND
2023-08-07B2303189-001ND
2023-08-07B2303189-002ND
2023-08-07B2303189-003ND
2023-08-07B2303189-004ND
2023-08-07B2303189-005ND
2023-08-07B2303189-006ND