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EWG's Tap Water Database — 2021 UPDATE

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Chlordane

Status: National drinking water standard exists

 

The cancer-causing pesticide chlordane was banned in 1988. Chlordane is persistent and accumulates in the body. It is still found in the environment and in the bodies of adults and newborn babies.

2017-2019:

FOUND
FOUND ABOVE HEALTH GUIDELINES

10

states detected

69

utilities detected

1.8 million

people served

6

states over health guideline

25

utilities over health guideline

95,959

people served over health guideline

Health concerns for chlordane

Cancer

Hormone disruption

Harm to reproduction and child development

State and national drinking water standards and health guidelines

EWG Health Guideline 0.03 ppb

The EWG Health Guideline of 0.03 ppb for chlordane 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) 2 ppb

The legal limit for chlordane, established in 1991, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer due to chlordane exposure.

ppb = parts per billion

States reporting chlordane in drinking water

UTILITIES REPORTING ABOVE HEALTH GUIDELINES UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served UtilitiesPeople Served
Hawaii271,6365719,373
Florida38,76017337,119
Delaware312,6914313,691
New York003303,300
Pennsylvania00987,870
West Virginia001130,883
Alabama00310,143
North Carolina142,288142,288
Rhode Island24292429
Texas11551155
MORE
LESS

Filtering technologies that reduce chlordane

Activated Carbon

Reverse Osmosis

Utilities with the highest amounts of chlordane, 2017-2019

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Middlesex Water SystemRaleigh, NC7 of 200.477 ppb975
Gaddy Mobile Home ParkKannapolis, NC6 of 60.450 ppb76
Aloha Gardens UtilitiesNew Port Richey, FL6 of 110.433 ppb8,136
Westwood S/dHoliday, FL8 of 90.430 ppb344
Ashebrook ParkDenver, NC12 of 250.405 ppb231
Royal Acres S/dCary, NC7 of 150.349 ppb61
Cedar Village IICarrboro, NC8 of 120.315 ppb36
Magnolia WoodsClimax, NC4 of 60.300 ppb72
Henlopen Acres, Town ofRehoboth, DE3 of 40.250 ppb999
Helms Water SystemDenver, NC7 of 200.158 ppb86
Oak Ridge Military AcademyOak Ridge, NC5 of 120.150 ppb80
Mcconnell S/dDenver, NC2 of 80.141 ppb124
Adams Mobile Home ParkMiddlesex, NC1 of 70.135 ppb80
Berkshire DownsCary, NC3 of 150.111 ppb277
Villas of GrandviewDover, DE1 of 10.1000 ppb108
Fort Elliott Cisd BriscoeBriscoe, TX1 of 50.1000 ppb155
Emerald Village S/dCary, NC2 of 90.0694 ppb125
Colonial Heights-meadowbrookCary, NC1 of 100.0672 ppb77
Spencer Rd ParkDenver, NC1 of 130.0637 ppb142
Dalewood-monteray Water SystemDenver, NC2 of 90.0630 ppb142
Camelot S/dCary, NC2 of 190.0620 ppb604
Amber AcresCharlotte, NC2 of 100.0615 ppb239
Rolling Acres S/dCary, NC2 of 200.0557 ppb58
Chipley Park S/dDenver, NC1 of 110.0504 ppb251
Smyrna Water DepartmentSmyrna, DE2 of 80.0488 ppb11,584
Ladd Center Water System*North Kingstown, RI3 of 170.0479 ppb129
Exeter Job Corps CenterProvidence, RI3 of 170.0479 ppb300
Boys Ranch TownEdmond, OK1 of 10.0390 ppb75
AliamanuSchofield Barracks, HI2 of 200.0355 ppb6,406
Joint Base Pearl Harbor-Hickam*Jbpph, HI2 of 200.0355 ppb65,230
Oakdale S/dCharlotte, NC1 of 70.0329 ppb112
Blue Skies EstatesOcala, FL1 of 40.0325 ppb195
Snow Creek Heights Water SystemDenver, NC1 of 100.0280 ppb130
Honolulu-Windward-Pearl Harbor*Honolulu, HI60 of 5390.0253 ppb631,389
Marine Corps Base HawaiiKaneohe Bay, HI60 of 5390.0253 ppb16,300
Woodlands At NuuanuHonolulu, HI60 of 5390.0253 ppb48
Florida Pines Mobile Home ParkVenice, FL1 of 20.0225 ppb280
Rogersville Water Works & Sewer BoardRogersville, Alamama, AL2 of 120.0167 ppb4,893
Avon Water Company*Clinton, CT3 of 490.0159 ppb11,590
Artesian Water Company*Newark, DE10 of 1890.0154 ppb301,000
Woods Home Owners Association 2Martinsburg, WV1 of 30.0152 ppb1,723
Mid-clarke Water System*Grove Hill, AL1 of 160.0144 ppb1,500
Grove Hill Water Works*Grove Hill, AL1 of 160.0144 ppb3,750
Barre Water DepartmentBarre, MA1 of 140.0143 ppb4,000
Woods Hoa, TheMartinsburg, WV1 of 30.0120 ppb1,550
Molino Utilities Inc.Molino, FL1 of 40.0115 ppb7,746
Hillburn VillageHillburn, NY11 of 2100.0112 ppb950
United Water New York*West Nyack, NY11 of 2100.0112 ppb270,950
Sugar Mountain UtilityCharlotte, NC1 of 410.0107 ppb3,000
Berkeley Springs Center - LowerBerkeley Springs, WV1 of 20.0101 ppb140

* 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 Chlordane, but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
Smyrna Water DepartmentSmyrna, DE2 of 80.0488 ppb11,584
Joint Base Pearl Harbor-Hickam*Jbpph, HI2 of 200.0355 ppb65,230
Honolulu-Windward-Pearl Harbor*Honolulu, HI60 of 5390.0253 ppb631,389
Marine Corps Base HawaiiKaneohe Bay, HI60 of 5390.0253 ppb16,300
Avon Water Company*Clinton, CT3 of 490.0159 ppb11,590
Artesian Water Company*Newark, DE10 of 1890.0154 ppb301,000
United Water New York*West Nyack, NY11 of 2100.0112 ppb270,950
City of Martinsburg*Martinsburg, WV1 of 80.00411 ppb15,652
Miramar (East & West) PlantsMiramar, FL1 of 160.00281 ppb127,700
WA of Great Neck NorthGreat Neck, NY1 of 750.00280 ppb31,400
Hurlburt Field AFB Water Sys.Hurlburt Field, FL1 of 200.00255 ppb10,608
City of Baltimore*Baltimore, MD3 of 300.00147 ppb1,600,000
Altoona Water Authority*Altoona, PA1 of 240.00125 ppb62,500
Naval Air Station Pensacola / Corry StationNas Pensacola, FL1 of 460.000283 ppb22,600
Lee County Utilities*Fort Myers, FL1 of 250 ppb251,502
Gateway Services DistrictFort Myers, FL1 of 250 ppb12,717

* 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 Chlordane, but it likely has the contaminant in its water supply.