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EWG's Tap Water Database — 2019 UPDATE

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Styrene

Status: National drinking water standard exists

 

Styrene is a volatile cancer-causing chemical used for manufacturing Styrofoam (polystyrene) and other plastics. Releases from industrial production sites and hazardous waste landfills cause styrene contamination in drinking water. Read More.

In addition to increasing the risk of cancer, styrene can also damage the liver and the nervous system. California set a public health goal for styrene in drinking water at 0.5 parts per billion. The federal Maximum Contaminant Level (MCL) allows up to 100 parts per billion of styrene in water, which is 200 times more than the California recommended level.

Click here to read more about carcinogenic VOCs.

2015-2017:

FOUND
FOUND ABOVE HEALTH GUIDELINES

31

states detected

141

utilities detected

1.8 million

people served

15

states over health guideline

22

utilities over health guideline

8,549

people served over health guideline

Health concerns for styrene

Cancer

Harm to the liver

Harm to the brain and nervous system

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for styrene 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) 100 ppb

The legal limit for styrene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1970s. This limit may not fully protect against the risk of cancer due to styrene exposure.

ppb = parts per billion

States reporting styrene in drinking water

UTILITIES REPORTING ABOVE HEALTH GUIDELINES UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served UtilitiesPeople Served
California1370171,131,084
Florida0014444,106
Mississippi00476,512
Connecticut148437,785
Wisconsin1352936,961
New Jersey1400226,640
New York41,8651917,532
Ohio0036,670
Texas132176,217
Louisiana0043,784
Alabama0013,237
Virginia0062,873
Washington12622,766
Iowa21,97132,532
Missouri483152,406
Vermont164232,163
Arizona18132920
Oregon001910
Nebraska18101810
Pennsylvania001700
Illinois11202576
Nevada001450
North Carolina12102372
Alaska001350
Georgia001286
New Hampshire001250
Oklahoma001170
South Carolina001133
Maryland187187
Montana00165
West Virginia00150
MORE
LESS

Filtering technologies that reduce styrene

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Utilities with the highest amounts of styrene, 2015-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Hudson Valley Water Company #2Woodbury, NY1 of 24.50 ppb225
Chaparral Water CompanyTucson, AZ1 of 54.40 ppb813
Timberline ShoresGaston, NC8 of 101.96 ppb210
Good Life Enterprises LLCHopewell Junction, NY1 of 11.80 ppb200
Corydon Water SupplyCorydon, IA1 of 11.40 ppb1,585
Deer Lodge Mobile Home ParkHerndon, MD1 of 11.30 ppb87
Oak Creek Mobile Home Park (water)Coarsegold, CA1 of 11.000 ppb370
Deep Run Adult VillageColts Neck, NJ2 of 130.892 ppb400
Mannsville VillageMannsville, NY1 of 10.800 ppb450
East Middlebury Fd 1E Middlebury, VT1 of 30.800 ppb642
Churdan Water SupplyChurdan, IA1 of 10.800 ppb386
The Callicoon Water Company Inc.Callicoon, NY2 of 20.750 ppb990
Hemingford, Village ofHemingford, NE1 of 50.680 ppb810
Brandt PointSequim, WA1 of 90.656 ppb26
Central Crossing Acres IIShell Knob, MO1 of 10.630 ppb25
52nd Ave Water GroupKenosha, WI2 of 150.627 ppb35
Country Tyme EstatesPalatine, IL3 of 60.615 ppb120
Friendship Hills SubdStockton, MO1 of 10.580 ppb35
Lyme Academy Apartments LLCTrumbull, CT5 of 240.578 ppb48
Bloomsdale PWSBloomsdale, MO1 of 10.570 ppb521
MO American Spokane HighlandsJoplin, MO1 of 10.570 ppb250
Paradise Point SubdivisionAustin, TX1 of 30.567 ppb321
Egypt Bend EstatesLuray, VA1 of 20.500 ppb250
Creekside Mobile Home ParkValatie, NY1 of 10.500 ppb36
Holiday Mobile Park Inc.Wappingers Falls, NY1 of 20.500 ppb250
Bynum / Teton Co. W & S DistrictBynum, MT1 of 20.490 ppb65
Northtowne Communities LLCVersailles, OH2 of 30.467 ppb100
Club Island AssociationCelina, OH1 of 20.415 ppb170
Badger Water SupplyBadger, IA1 of 20.400 ppb561
Interlaken VillageInterlaken, NY1 of 20.400 ppb650
Markridge Park Subdivision Water SystemDuson, LA2 of 40.380 ppb468
Calam - Walnut GroveSacramento, CA1 of 20.350 ppb644
Alberta SubdivisionThiensville, WI1 of 10.350 ppb75
Country Acres Mobile Home PkLake Mills, WI1 of 10.340 ppb160
Century Estates 1Thiensville, WI1 of 10.340 ppb130
Grand Ave ApartmentsThiensville, WI1 of 10.340 ppb80
Watermark CondominiumsElm Grove, WI1 of 10.340 ppb25
Parkerville East Mobile Home ParkLancaster, TX2 of 40.335 ppb50
Dayton Water DepartmentDayton, WA1 of 40.333 ppb2,740
Nashotah HouseDelafield, WI1 of 10.330 ppb125
Pioneer CentreMuskego, WI1 of 10.330 ppb140
Country Terrace Condo HomesMequon, WI1 of 10.330 ppb160
Global Capital Of World PeaceRomney, WV1 of 20.305 ppb50
Lannon Estates Mobile Home ParkLannon, WI1 of 10.300 ppb300
Coachmans Terrace Mobile Home ParkLake Geneva, WI1 of 10.290 ppb125
Cape Girardeau County Public Water Supply District 4Gordonville, MO1 of 20.280 ppb1,575
Artisan Senior LivingLake Geneva, WI1 of 10.280 ppb33
Clearview MhcNorman, OK2 of 130.269 ppb170
Bjw&sa Palm KeyOkatie, SC1 of 30.257 ppb133
Woodcrest CommunityRifton, NY1 of 20.250 ppb340
UtilityLocationTestsAverage levelPeople served
Miramar (East & West) PlantsMiramar, FL1 of 60.0417 ppb128,729
City of GulfportGulfport, MS1 of 350.0334 ppb72,076
Wallingford Water DepartmentWallingford, CT1 of 170.0294 ppb37,267
Weston Municipal UtilitiesWeston, WI1 of 80.0238 ppb15,045
Lacey Twp MUAForked River, NJ1 of 250.00960 ppb26,240
River Falls WaterworksRiver Falls, WI1 of 140.00929 ppb15,229
Lee County Utilities*Fort Myers, FL1 of 70.00714 ppb236,944
Peoples Water Service CompanyPensacola, FL1 of 1230.00390 ppb34,352
San Jose State UniversitySan Jose, CA1 of 2090.00330 ppb30,000
San Jose Water Company*San Jose, CA1 of 2090.00330 ppb998,000
Cal-water Service Company - ChicoChico, CA1 of 3920.00214 ppb100,435

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