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National Drinking Water Database


Phosphorus in Idaho


Phosphorus is a component of fertilizer and manure, and a common pollutant in municipal wastewater discharges.

The Most Polluted Communities in Idaho

1 water utilities reported detecting Phosphorus in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Phosphorus level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1City of Cascade
Cascade, ID
9971 of 1551.67 ppb
(551.67 ppb)

Health Based Limits for Phosphorus

StandardDescriptionLevel
Lifetime health-based limit, non-cancer riskConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for a lifetime of exposure. The Lifetime health-based limit (or Health Advisory, HA) is based on exposure for a a 70-kg adult consuming 2 liters of water per day. Source: U.S. Environmental Protection Agency.0.1 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.0.5 ppb

Violation Summary for Phosphorus in Idaho

There are no violations reported for this contaminant in Idaho