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EWG's Tap Water Database — 2021 UPDATE

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1,2,4-Trichlorobenzene

Status: National drinking water standard exists

 

1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.

2017-2019:

FOUND
FOUND ABOVE HEALTH GUIDELINES

10

states detected

41

utilities detected

430,000

people served

0

states over health guideline

0

utilities over health guideline

0

people served over health guideline

Health concerns for 1,2,4-trichlorobenzene

Harm to the adrenal gland

Cancer

State and national drinking water standards and health guidelines

EWG Health Guideline 5 ppb

The EWG Health Guideline of 5 ppb for 1,2,4-trichlorobenzene 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 hormone disruption.

EPA Maximum Contaminant
Level (MCL) 70 ppb

The legal limit for 1,2,4-trichlorobenzene, established in 1992, was based on a toxicity study in laboratory animals conducted in 1981. This limit may not fully protect against hormone disruption.

ppb = parts per billion

States reporting 1,2,4-trichlorobenzene in drinking water

UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served
Florida19343,906
California148,623
Iowa210,794
New York109,242
Delaware17,977
Ohio26,425
Washington32,342
North Carolina1403
Wisconsin1377
Pennsylvania1150
MORE
LESS

Filtering technologies that reduce 1,2,4-trichlorobenzene

carbon filter icon

Activated Carbon

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Reverse Osmosis

Utilities with the highest amounts of 1,2,4-trichlorobenzene, 2017-2019

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Oakcrest Villas/sun ResortOcala, FL1 of 50.700 ppb80
Sweetwater Beach SubdivisionEagle Rock, MO1 of 10.660 ppb63
Ausable Heights Water SystemKeeseville, NY1 of 10.500 ppb46
Morningview SubdivisionLeesburg, FL1 of 70.429 ppb123
Peace of Mind EstatesSpringfield, MO1 of 20.365 ppb60
Friendship Hills SubdStockton, MO1 of 20.350 ppb35
Maxwell Water DepartmentNewton, IA1 of 40.343 ppb920
St. Mary Parish Water & Sewer #2 Bayou VistaPatterson, LA2 of 120.267 ppb4,652
Town of BerwickBerwick, LA2 of 120.267 ppb4,430
Berwick Bayou Vista Water Works Commission*Berwick, LA2 of 120.267 ppb0
Florida Pines Mobile Home ParkVenice, FL1 of 20.250 ppb280
Wilden Heights Homeowners AssociationSpringfield, MO1 of 20.250 ppb58
New Harmony M H PLake Wales, FL1 of 20.240 ppb26
City of RiponRipon, CA1 of 130.238 ppb14,915
Crescent City Water Treatment PlantCrescent City, FL1 of 70.229 ppb1,800
Pound WaterworksPound, WI1 of 60.217 ppb377
St. Lucie Mobile VillageIndiantown, FL1 of 30.167 ppb750
Indiantown CompanyIndiantown, FL1 of 30.167 ppb5,847
Southgate Mobile Home Park Water SystemBossier City, LA2 of 80.155 ppb177
Weatherstone S/dDenver, NC2 of 120.153 ppb280
Waverly Water DepartmentWaverly, IA1 of 90.149 ppb9,874
Echoing Hills VillageWarsaw, OH2 of 120.128 ppb25
Village of Forest Water SystemForest, LA2 of 140.126 ppb1,560
Gardeau Water DistrictCastile, NY1 of 40.125 ppb60
Silver Lake Institute - Castile Water District #1, NY1 of 40.125 ppb440
Perry Center Water DistrictPerry, NY1 of 40.125 ppb150
Perry Village*, NY1 of 40.125 ppb4,348
Riverbend Motorcoach ResortLabelle, FL1 of 100.120 ppb596
Ruskin MobilesRuskin, FL1 of 60.115 ppb36
Shady Oaks Trailer ParkOrlando, FL1 of 20.110 ppb38
Chesapeake Bay EstatesRockville, VA1 of 70.107 ppb288
Town of SharpsburgWilliamsport, MD1 of 60.102 ppb1,360
Badger Mountain Irrigation DistrictKennewick, WA1 of 20.0975 ppb2,200
City of WaynesboroWaynesboro, VA1 of 60.0933 ppb21,006
Oblates of St. FrancisChilds, MD1 of 100.0920 ppb36
Kiona Village CourtBenton City, WA2 of 20.0896 ppb108
Mount Adams Vista Water SystemBenton City, WA1 of 10.0849 ppb34
Aqua Pa Water Company GlenburnWhite Haven, PA1 of 70.0714 ppb150
Kensington Meadows S/dCary, NC1 of 80.0713 ppb403
Fern Crest Utilities Inc.Ft Lauderdale, FL1 of 60.0683 ppb3,123
Oceanside Water DistrictOceanside, OR1 of 80.0625 ppb500
Springhill Mobile Home ParkWappingers Falls, NY1 of 90.0556 ppb150
Farm-to-market AssociatesBrewster, NY1 of 90.0556 ppb48
Waverly Water SystemLake Wales, FL1 of 110.0545 ppb1,479
Thomas CoveNewark, DE2 of 190.0421 ppb7,977
Sunrise SouthwestFort Lauderdale, FL1 of 50.0400 ppb9,457
Tall Timbers Mobile Home ParkLincoln, IN1 of 160.0375 ppb90
Monett PWSMonett, MO1 of 180.0356 ppb9,027
Miramar (East & West) PlantsMiramar, FL1 of 140.0293 ppb127,700
Tamiami Village Mobile Home ParkN. Fort Myers, FL2 of 180.0233 ppb1,200

* 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 1,2,4-Trichlorobenzene, but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
City of RiponRipon, CA1 of 130.238 ppb14,915
City of WaynesboroWaynesboro, VA1 of 60.0933 ppb21,006
Miramar (East & West) PlantsMiramar, FL1 of 140.0293 ppb127,700
Lee County Utilities*Fort Myers, FL2 of 180.0233 ppb251,502
Gateway Services DistrictFort Myers, FL2 of 180.0233 ppb12,717
City of Stuart - Water PlantStuart, FL9 of 2140.0172 ppb19,000
Wallingford Water DepartmentWallingford, CT1 of 350.0143 ppb37,267
Riviera Beach Utility District*Riviera Beach, FL2 of 470.0126 ppb34,700
City of Lake MaryLake Mary, FL1 of 680.00309 ppb16,746
City of RialtoRialto, CA2 of 6250.00179 ppb48,623

* 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 1,2,4-Trichlorobenzene, but it likely has the contaminant in its water supply.