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EWG's Tap Water Database — 2019 UPDATE

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Pentachlorophenol

Status: National drinking water standard exists

 

Pentachlorophenol is a carcinogenic chemical used as a wood preservative. It harms developing fetuses, and causes immune suppression and hormone disruption.

2015-2017:

FOUND
FOUND ABOVE HEALTH GUIDELINES

13

states detected

111

utilities detected

1.0 million

people served

0

states over health guideline

0

utilities over health guideline

0

people served over health guideline

Health concerns for pentachlorophenol

Cancer

Harm to child development

Harm to the immune system

Hormone disruption

State and national drinking water standards and health guidelines

EWG Health Guideline 0.3 ppb

The EWG Health Guideline of 0.3 ppb for pentachlorophenol 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 cancer.

EPA Maximum Contaminant
Level (MCL) 1 ppb

The legal limit for pentachlorophenol, established in 1991, was based on analytical detection limits at the time that the standard was set.

ppb = parts per billion

States reporting pentachlorophenol in drinking water

UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served
Florida13419,796
North Dakota71207,739
New York7191,747
Arizona260,783
Louisiana446,182
Delaware345,747
Minnesota113,522
Colorado37,294
Oregon25,870
Wyoming13,627
North Carolina2584
South Dakota1450
Pennsylvania1291
MORE
LESS

Filtering technologies that reduce pentachlorophenol

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Utilities with the highest amounts of pentachlorophenol, 2015-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Bel-di-gil Water SystemBelcher, LA2 of 40.115 ppb1,132
Garrison Lake DistrictDover, DE1 of 50.112 ppb8,559
Ellamae Phillips Company RllpAspen, CO1 of 60.105 ppb44
Sleepy Hollow (village)Sleepy Hollow, NY1 of 20.0825 ppb9,870
Tarrytown Water SupplyTarrytown, NY1 of 20.0825 ppb11,000
Pine Mobile Home ParkBerne, NY1 of 10.0800 ppb110
Dardanelle Trailer ParkCentral Point, OR1 of 30.0633 ppb70
Wheatland, Town OfWheatland, WY1 of 20.0500 ppb3,627
Shady Oaks Estates Water SystemBaton Rouge, LA2 of 40.0500 ppb135
Kensico Water DistrictValhalla, NY1 of 40.0413 ppb17,917
United Water Westchester Rate District 1New Rochelle, NY1 of 50.0330 ppb146,723
South Central Regional Water District North Burleigh*Bismarck, ND1 of 10.0300 ppb9,848
New UlmNew Ulm, MN1 of 20.0300 ppb13,522
Northeast Regional Water District-langdon Branch*Cavalier, ND1 of 10.0300 ppb2,450
Devils Lake, City of*Devils Lake, ND1 of 10.0300 ppb7,141
Wilton, City ofWilton, ND1 of 10.0300 ppb711
Makoti, City ofMakoti, ND1 of 10.0300 ppb154
Trenton Water Users AssociationTrenton, ND1 of 10.0300 ppb840
Apple Valley Co-opMenoken, ND1 of 10.0300 ppb200
Dakota Adventist AcademyBismarck, ND1 of 10.0300 ppb80
Country Club Co-opBismarck, ND1 of 10.0300 ppb162
Goodrich, City ofGoodrich, ND1 of 10.0300 ppb98
Western Area Water Supply Authority*Williston, ND1 of 10.0300 ppb0
Beulah, City ofBeulah, ND1 of 10.0300 ppb3,304
Walden, Town ofWalden, CO1 of 30.0300 ppb750
Drayton, City ofDrayton, ND1 of 10.0300 ppb824
Dakotaland Lodging-springbrookWilliston, ND1 of 10.0300 ppb300
Marmarth, City ofMarmarth, ND1 of 10.0300 ppb136
City of Williston*Williston, ND1 of 10.0300 ppb26,426
Cathay, City ofCathay, ND1 of 10.0260 ppb43
Serenity Oaks Mobile Home ParkOcala, FL1 of 50.0240 ppb135
Cando, City ofCando, ND1 of 10.0240 ppb1,115
Frostproof, City ofFrostproof, FL2 of 60.0230 ppb3,550
Sheridan, City ofSheridan, OR1 of 50.0220 ppb5,800
Kingman Municipal WaterKingman, AZ8 of 220.0211 ppb45,000
Halliday, City ofHalliday, ND1 of 10.0200 ppb188
Elgin, City ofElgin, ND1 of 20.0200 ppb642
New Leipzig, City ofNew Leipzig, ND1 of 20.0200 ppb221
Killdeer, City ofKilldeer, ND1 of 10.0200 ppb1,173
Manning Water BoardManning, ND1 of 10.0200 ppb55
New England, City ofNew England, ND1 of 20.0200 ppb600
Golva, City ofGolva, ND1 of 20.0200 ppb61
Hettinger, City ofHettinger, ND1 of 20.0200 ppb1,226
Reeder, City ofReeder, ND1 of 20.0200 ppb162
Hazen, City ofHazen, ND1 of 10.0200 ppb2,411
Medora, City ofMedora, ND1 of 20.0200 ppb112
Carson, City ofCarson, ND1 of 20.0200 ppb293
Golden Valley, City ofGolden Valley, ND1 of 10.0200 ppb182
Zap, City ofZap, ND1 of 10.0200 ppb237
Watford City, City ofWatford City, ND1 of 10.0200 ppb6,390

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Pentachlorophenol, but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
Tarrytown Water SupplyTarrytown, NY1 of 20.0825 ppb11,000
Kensico Water DistrictValhalla, NY1 of 40.0413 ppb17,917
United Water Westchester Rate District 1New Rochelle, NY1 of 50.0330 ppb146,723
New UlmNew Ulm, MN1 of 20.0300 ppb13,522
City of Williston*Williston, ND1 of 10.0300 ppb26,426
Kingman Municipal WaterKingman, AZ8 of 220.0211 ppb45,000
City of DickinsonDickinson, ND1 of 20.0200 ppb22,993
City of Bismarck*Bismarck, ND1 of 20.0150 ppb72,417
Broward County Water and Wastewater Services (BCWWS) 3B/CMiramar, FL1 of 30.0113 ppb32,649
City of Hollywood*Hollywood, FL1 of 30.0113 ppb142,705
Toho Water Authority - Poinciana SystemKissimmee, FL1 of 30.01000 ppb69,447
St Bernard Parish WaterworksChalmette, LA2 of 100.00760 ppb44,000
City of Buckeye Sonora - SundanceBuckeye, AZ1 of 80.00738 ppb15,783
Miramar (East & West) PlantsMiramar, FL1 of 60.00500 ppb128,729
Bethany Bay Ocean View*Dover, DE1 of 110.00291 ppb34,500

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Pentachlorophenol, but it likely has the contaminant in its water supply.