Know Your Environment. Protect Your Health.

Mercury (inorganic)

Yuima Municipal Water District Ida

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND70ND
2020ND20ND
2021ND10ND
2022ND90ND
2023ND30ND

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
2018-07-10CA3700938_004_004-201807101105ND
2019-03-12CA3700938_048_048-201903121045ND
2019-06-11CA3700938_005_005-201906111200ND
2019-07-09CA3700938_012_012-201907090845ND
2019-07-09CA3700938_047_047-201907091130ND
2019-07-09CA3700938_006_006-201907090800ND
2019-07-09CA3700938_031_031-201907090730ND
2019-10-08CA3700938_011_011-201910080820ND
2020-06-09CA3700938_037_037-202006090720ND
2020-07-14CA3700938_020_020-202007141200ND
2021-07-13CA3700938_004_004-202107130845ND
2022-03-09CA3700938_048_048-202203091320ND
2022-07-05CA3700938_047_047-202207051310ND
2022-07-12CA3700938_012_012-202207121330ND
2022-10-12CA3700938_011_011-202210121000ND
2022-10-25CA3700938_012_012-202210251100ND
2022-10-25CA3700938_005_005-202210251145ND
2022-10-25CA3700938_031_031-202210251130ND
2022-11-01CA3700938_006_006-202211011400ND
2022-12-20CA3700938_047_047-202212201330ND
2023-01-09CA3700938_006_006-202301091230ND
2023-06-05CA3700938_037_037-202306050930ND
2023-07-11CA3700938_020_020-202307110750ND