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EWG's Tap Water Database — 2019 UPDATE

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1,2,3-Trichloropropane

Status: No national drinking water standard exists

 

1,2,3-Trichloropropane is a potent carcinogen that contaminates drinking water in agricultural regions where it was historically used as soil fumigant. Click here to read more about carcinogenic VOCs.

2012-2017:

FOUND
FOUND ABOVE HEALTH GUIDELINES

19

states detected

226

utilities detected

14 million

people served

19

states over health guideline

184

utilities over health guideline

7.1 million

people served over health guideline

Health concerns for 1,2,3-trichloropropane

Cancer

State and national drinking water standards and health guidelines

EWG Health Guideline 0.0007 ppb

The EWG Health Guideline of 0.0007 ppb for 1,2,3-trichloropropane 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.

ppb = parts per billion

States reporting 1,2,3-trichloropropane in drinking water

UTILITIES REPORTING ABOVE HEALTH GUIDELINES UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served UtilitiesPeople Served
California832,911,592967,553,663
Texas36249,107572,613,203
New York91,373,382111,518,382
Hawaii181,058,854181,058,854
Pennsylvania4748,5534748,553
New Jersey7317,49910381,114
Connecticut137,2674103,074
Florida387,320387,320
Alabama683,444683,444
Arizona256,006256,006
Delaware455,359455,359
New Mexico135,000135,000
Maryland230,843230,843
Wisconsin123,867123,867
Virginia112,800112,800
Ohio26,52526,525
South Carolina24,08124,081
Vermont11261126
Maine143143
MORE
LESS

Filtering technologies that reduce 1,2,3-trichloropropane

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Activated Carbon

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Reverse Osmosis

Utilities with the highest amounts of 1,2,3-trichloropropane, 2012-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Four SeasonsAustin, TX1 of 40.400 ppb969
Sumter-wessex S/dSumter, SC6 of 110.266 ppb412
MililaniHonolulu, HI4 of 120.235 ppb35,875
City of LivingstonLivingston, CA103 of 1060.198 ppb14,894
Tully Mobile EstatesModesto, CA6 of 60.180 ppb40
Maunaolu PlantationWailuku, HI4 of 120.144 ppb100
Happy Acres DevelopmentHonesdale, PA1 of 20.130 ppb168
LahainaWailuku, HI86 of 2500.122 ppb18,122
WaialuaHonolulu, HI4 of 80.120 ppb13,447
KaanapaliLahaina, HI5 of 150.119 ppb8,000
MakawaoWailuku, HI27 of 350.118 ppb28,702
City of ShafterShafter, CA96 of 970.115 ppb16,928
Waipio HeightsHonolulu, HI9 of 190.109 ppb16,616
Kalaheo-KoloaLihue, HI4 of 60.0933 ppb11,382
City of WascoWasco, CA32 of 320.0791 ppb21,170
Wahiawa*Honolulu, HI4 of 80.0788 ppb24,798
Camp StoverJbphh, HI4 of 80.0788 ppb595
Sierra Vista AssociationDelano, CA1 of 10.0710 ppb44
Harris County Municipal Utility District 433*Houston, TX1 of 20.0650 ppb3,093
City of BakersfieldBakersfield, CA157 of 2270.0587 ppb138,309
Brock Mutual Water CompanyBakersfield, CA33 of 340.0568 ppb511
Arvin Community Services DistrictArvin, CA34 of 520.0558 ppb19,000
Chino Basin Desalter Authority - Desalter 1*Ontario, CA80 of 1660.0523 ppb0
California Water Service (CWS) - North Garden*San Jose, CA186 of 2170.0494 ppb24,167
Keyes Community Services DistrictKeyes, CA35 of 480.0446 ppb4,891
Waipahu-Ewa-WaianaeHonolulu, HI19 of 830.0432 ppb188,539
City of AtwaterAtwater, CA32 of 440.0405 ppb29,050
City of Seagraves*Seagraves, TX1 of 80.0400 ppb2,196
Long Canyon Water Company CorporationBakersfield, CA1 of 10.0370 ppb187
Belmont Water CorporationFresno, CA1 of 10.0370 ppb112
Caruthers Community Services DistrictCaruthers, CA8 of 170.0323 ppb2,497
VintonVinton, VA3 of 30.0320 ppb12,800
City of ParlierParlier, CA29 of 480.0316 ppb12,058
Moorestown Water DepartmentMoorestown, NJ11 of 260.0309 ppb20,700
Wallingford Water DepartmentWallingford, CT1 of 170.0294 ppb37,267
Hughson, City OfHughson, CA3 of 30.0287 ppb6,082
Maple Shade Water Department*Maple Shade, NJ88 of 1360.0278 ppb19,400
Home Gardens County Water DistrictCorona, CA5 of 260.0274 ppb3,033
City of Corona*Corona, CA5 of 260.0274 ppb155,896
Milford City Public Water SystemMilford, OH1 of 190.0263 ppb6,400
Dix Hills Water DistrictHuntington, NY1 of 80.0250 ppb34,522
City of ChinoChino, CA41 of 530.0246 ppb18,907
City of RiponRipon, CA3 of 170.0241 ppb14,915
Northwest Harris County Municipal Utility District 6Houston, TX1 of 40.0225 ppb2,196
City of CeresCeres, CA71 of 1470.0206 ppb42,666
East Pasadena Water CompanyPasadena, CA37 of 410.0200 ppb10,978
Winton Water & Sanitary DistrictWinton, CA22 of 390.0199 ppb8,500
City of South PasadenaSouth Pasadena, CA2 of 30.0197 ppb25,899
Athal Mutual Water SystemBakersfield, CA3 of 30.0190 ppb150
El Dorado Utility DistrictHouston, TX1 of 70.0171 ppb4,077

* 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 1,2,3-Trichloropropane, but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
MililaniHonolulu, HI4 of 120.235 ppb35,875
City of LivingstonLivingston, CA103 of 1060.198 ppb14,894
LahainaWailuku, HI86 of 2500.122 ppb18,122
WaialuaHonolulu, HI4 of 80.120 ppb13,447
MakawaoWailuku, HI27 of 350.118 ppb28,702
City of ShafterShafter, CA96 of 970.115 ppb16,928
Waipio HeightsHonolulu, HI9 of 190.109 ppb16,616
Kalaheo-KoloaLihue, HI4 of 60.0933 ppb11,382
City of WascoWasco, CA32 of 320.0791 ppb21,170
Wahiawa*Honolulu, HI4 of 80.0788 ppb24,798
City of BakersfieldBakersfield, CA157 of 2270.0587 ppb138,309
Arvin Community Services DistrictArvin, CA34 of 520.0558 ppb19,000
California Water Service (CWS) - North Garden*San Jose, CA186 of 2170.0494 ppb24,167
Waipahu-Ewa-WaianaeHonolulu, HI19 of 830.0432 ppb188,539
City of AtwaterAtwater, CA32 of 440.0405 ppb29,050
VintonVinton, VA3 of 30.0320 ppb12,800
City of ParlierParlier, CA29 of 480.0316 ppb12,058
Moorestown Water DepartmentMoorestown, NJ11 of 260.0309 ppb20,700
Wallingford Water DepartmentWallingford, CT1 of 170.0294 ppb37,267
Maple Shade Water Department*Maple Shade, NJ88 of 1360.0278 ppb19,400
City of Corona*Corona, CA5 of 260.0274 ppb155,896
Dix Hills Water DistrictHuntington, NY1 of 80.0250 ppb34,522
City of ChinoChino, CA41 of 530.0246 ppb18,907
City of RiponRipon, CA3 of 170.0241 ppb14,915
City of CeresCeres, CA71 of 1470.0206 ppb42,666
East Pasadena Water CompanyPasadena, CA37 of 410.0200 ppb10,978
City of South PasadenaSouth Pasadena, CA2 of 30.0197 ppb25,899
Rubidoux Community SDRubidoux, CA6 of 100.0170 ppb26,150
Lamont Public Utility DistrictBakersfield, CA30 of 640.0165 ppb18,290
South Huntington Water DepartmentSouth Huntington, NY2 of 70.0160 ppb81,760
California Water Service - South San FranciscoSan Jose, CA44 of 640.0149 ppb56,110
California Water Service (CWS) - Bakersfield*San Jose, CA101 of 3660.0146 ppb246,371
California Water Service (CWS) - VisaliaSan Jose, CA24 of 790.0115 ppb135,923
Lihue-KapaaLihue, HI5 of 290.0112 ppb31,337
City of MantecaManteca, CA81 of 1980.00987 ppb66,451
Northwest Harris County MUD 5*Houston, TX1 of 140.00929 ppb16,368
Fruitridge Vista Water CompanySacramento, CA13 of 420.00921 ppb15,000
California Water Service (CWS) - SelmaSan Jose, CA45 of 1120.00725 ppb24,587
Langham Creek Utility District*Houston, TX1 of 130.00692 ppb10,377
Gulf ShoresGulf Shores, AL2 of 110.00636 ppb23,823
Harris County MUD 55 Heritage ParkHouston, TX1 of 80.00625 ppb15,671
City of LodiLodi, CA14 of 800.00598 ppb63,395
City of Modesto, SalidaModesto, CA2 of 150.00587 ppb24,440
City of ReedleyReedley, CA14 of 730.00541 ppb24,842
City of Fresno*Fresno, CA88 of 4160.00537 ppb522,352
City of TulareTulare, CA117 of 2910.00529 ppb60,823
City of HemetHemet, CA1 of 40.00500 ppb20,212
Monte Vista Water District*Montclair, CA31 of 830.00496 ppb54,460
California Water Service - StocktonSan Jose, CA36 of 1620.00436 ppb185,346
Marine Corps Base HawaiiKaneohe Bay, HI9 of 1100.00410 ppb15,900

* 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 1,2,3-Trichloropropane, but it likely has the contaminant in its water supply.