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National Drinking Water Database

n-Nitroso di-N-Propylamine in California

n-Nitroso di-N-propylamine is a synthetic chemical detected as a contaminant in certain herbicides such as Trifluralin and in extruded rubber products; it is discharged with wastewater from chemical plants.

The Most Polluted Communities in California

1 water utilities reported detecting n-Nitroso di-N-Propylamine in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average n-Nitroso di-N-Propylamine level

RankSystem Population Served Positive test results of total reported tests Average Level
1Monterey Park-City, Water Dept.
Monterey Park, CA
57,0001 of 12< 0.01 ppb
(< .01 to 0.000667 ppb)

Health Based Limits for n-Nitroso di-N-Propylamine

EPA Human Health Water Quality CriteriaWater quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. Source: U.S. Environmental Protection Agency.<0.01 ppb
Health-Based Screening LevelA benchmark concentration of contaminants in water that may be of potential concern for human health, if exceeded. For noncarcinogens, the HBSL represents the contaminant concentration in drinking water that is not expected to cause any adverse effects over a lifetime of exposure. For carcinogens, the HBSL range represents the contaminant concentration in drinking water that corresponds to an excess estimated lifetime cancer risk of 1 chance in 1 million to 1 chance in 10 thousand. Source: U.S. Geological Survey.<0.01 ppb-0.5 ppb

Violation Summary for n-Nitroso di-N-Propylamine in California

There are no violations reported for this contaminant in California