Know Your Environment. Protect Your Health.

Mercury (inorganic)

Meridian Water Department

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.

 

60

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND230ND
2019ND10ND
2020ND230ND
2021ND10ND
2022ND30ND
2023ND90ND

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
2018-03-26I2018003270667ND
2018-03-26I2018003270688ND
2018-03-26I2018003270670ND
2018-03-26I201803270687ND
2018-03-26I2018003270671ND
2018-03-26I2018003270680ND
2018-03-26I2018003270686ND
2018-03-26I2018003270668ND
2018-03-26I2018003270682ND
2018-03-26I2018003270673ND
2018-03-26I2018003270666ND
2018-03-26I2018003270669ND
2018-03-26I2018003270665ND
2018-03-26I2018003270685ND
2018-03-26I2018003270675ND
2018-03-26I2018003270683ND
2018-03-26I2018003270684ND
2018-03-26I2018003270674ND
2018-03-26I2018003270681ND
2018-03-26I2018003270672ND
2018-03-26I2018003270689ND
2018-04-10I201804120311ND
2018-06-12I201806131144ND
2019-07-09I201907100988ND
2020-03-10202003110253ND
2020-03-10202003110242ND
2020-03-17202003180487ND
2020-03-17202003180445ND
2020-03-17202003180341ND
2020-03-18202003190169ND
2020-04-07202004080558ND
2020-04-07202004080530ND
2020-04-14202004150455ND
2020-04-14202004160513ND
2020-08-05202008060243ND
2020-08-06202008070395ND
2020-08-06202008070424ND
2020-08-06202008070429ND
2020-08-13202008140195ND
2020-08-24202008260647ND
2020-08-26202008280065ND
2020-11-04202011050402ND
2020-11-23202011240342ND
2020-11-23202011240344ND
2020-11-24202011250284ND
2020-11-24202011250275ND
2020-12-02202012030482ND
2021-07-21202107220276ND
2022-02-22202202231261ND
2022-03-01202203020994ND
2022-11-16380-28732-1ND
2023-08-01380-57235-1ND
2023-08-02380-57464-1ND
2023-08-07380-57974-1ND
2023-08-07380-57899-1ND
2023-08-09380-58355-1ND
2023-08-09380-58481-1ND
2023-08-09380-58496-1ND
2023-09-26380-64488-1ND
2023-09-26380-64427-1ND