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National Drinking Water Database


Di-n-butylphthalate in Washington


Di-n-butylphthalate is an industrial solvent or additive used in many consumer products such as nail polish, cosmetics, some printing inks, pharmaceutical coatings, cleaning products and insecticides. [read more]

The Most Polluted Communities in Washington

7 water utilities reported detecting Di-n-butylphthalate in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Di-n-butylphthalate level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Country Club Estates Water System
Moses Lake, WA
1591 of 12.7 ppb
(2.7 ppb)
2Skyline Water System Inc
Moses Lake, WA
2532 of 52.4 ppb
(0 to 7 ppb)
3Lewis Co Water District #2
Onalaska, WA
6003 of 30.81 ppb
(0.68 to 1.05 ppb)
4Chehalis Water Department
Chehalis, WA
7,1001 of 20.7 ppb
(0 to 1.4 ppb)
5Stevens Co Pud - Dolomite
Loon Lake, WA
431 of 10.7 ppb
(0.7 ppb)
6Pud #1 of Asotin County
Clarkston, WA
19,2004 of 60.5 ppb
(0 to 1.05 ppb)
7Dallesport Water Association
Cook, WA
3981 of 40.22 ppb
(0 to 0.87 ppb)

Health Based Limits for Di-n-butylphthalate

StandardDescriptionLevel
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.700 ppb
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.2000 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.4000 ppb

Violation Summary for Di-n-butylphthalate in Washington

There are no violations reported for this contaminant in Washington