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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

DCPA di acid degradate


Status: Unregulated - EPA has not established a maximum legal limit in tapwater for this contaminant.

DCPA di acid degradate is a residue of Dacthal (DCPA), an herbicide used for urban, household and agricultural applications.

 
Detected
Found above
health guidelines
Found above
legal limit
States
3
-
-
Water utilities
28
-
-
People Served
430,497
-
-

DCPA di acid degradate Exposure by State

Water utilities in 3 states have reported detecting DCPA di acid degradate in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

StateWater Suppliers with DCPA di acid degradate contamination
SystemsPopulation
Washington22235,892
Minnesota4146,205
New York248,400
Total28430,497

The Most Polluted Communities

28 water utilities reported detecting DCPA di acid degradate in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average DCPA di acid degradate level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Columbia View Water System
Burbank, WA
3505 of 56.46 ppb
(4.75 to 7.97 ppb)
2City of Quincy Water Department
Quincy, WA
5,1656 of 66.36 ppb
(0.6 to 10.46 ppb)
3Country Corner Mobile Home Park
Gig Harbor, WA
953 of 35.87 ppb
(5.1 to 6.5 ppb)
4WA of Great Neck North
Great Neck, NY
31,40041 of 484.91 ppb
(0 to 12 ppb)
5Weiler-Martin Tracts Water Assn
Quincy, WA
7754 of 43.93 ppb
(1.6 to 6.9 ppb)
6Sportsman Trailer Park
Othello, WA
1503 of 42.13 ppb
(0 to 3.33 ppb)
7City of West Richland
West Richland, WA
11,2001 of 11.77 ppb
(1.77 ppb)
8Sage Hills Estates 1
Warden, WA
388 of 81.53 ppb
(0.98 to 2.22 ppb)
9White Bluff Water Association
Pasco, WA
1052 of 31.45 ppb
(0 to 3 ppb)
10Tieton Hills Water Co
Yakima, WA
756 of 71.24 ppb
(0 to 2.3 ppb)

Testing Summary for DCPA di acid degradate

Are tests routinely required for DCPA di acid degradate by federal law?No
Water suppliers reporting tests for DCPA di acid degradate (2004-2009):616 of 47,576
Average testing rate for water supplier reporting tests (2004-2009):0.3 per year