EWG's Tap Water Database



Green River Valley Water District

Aluminum is a metal released from metal refineries and mining operations. Too much aluminum exposure can impair children's brain development.





Samples exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
201060.0 ppb1160.0 ppb
201170.0 ppb1170.0 ppb
201250.0 ppb1150.0 ppb
201340.0 ppb1140.0 ppb
201450.0 ppb1150.0 ppb
201540.0 ppb1140.0 ppb

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 600 ppb

The health guideline of 600 ppb for aluminum 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 the brain and nervous system.

ppb = parts per billion.

All test results

Date Lab ID Result
2010-02-09AH2423360.0 ppb
2011-02-08AH9957670.0 ppb
2012-02-142020128-0150.0 ppb
2013-02-193020071-0140.0 ppb
2014-02-114020251-0150.0 ppb
2015-01-205020260-0140.0 ppb