Know Your Environment. Protect Your Health.
EWG Home Skin Deep Database Healthy Living App EWG Verified Open menu

EWG’s Tap
Water Database
Water Contamination Water Filter Guide Consumer Resources News & Insights
TAKE ACTION

CONTAMINANT

4,8-dioxa-3H-perfluorononanoic acid (ADONA)

FOUND

Exceeding guidelines

STATES DETECTED

12

serves

712,000

utilities detected

55

states detected

3

serves

29,513

utilities detected

4

Overview

4,8-dioxa-3H-perfluorononanoic acid (ADONA) is a member of a group of perfluorinated chemicals used in many consumer products. ADONA and other perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. Click here to read more about perfluorinated chemicals.

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 1 ppt

The EWG Health Guideline of 1 ppt for ADONA was defined by EWG as based on studies by Phillipe Grandjean of Harvard University and many other independent researchers who found reduced effectiveness of vaccines and adverse impacts on mammary gland development from exposure to PFOA and PFOS, the two PFAS most widely detected in drinking water.

ppt = parts per trillion

National Standard Exists

Health Concerns:

  • Cancer

  • Harm to the immune system

  • Hormone disruption

  • Harm to fetal growth and child development

  • Harm to the liver

Want to remove
4,8-dioxa-3H-perfluorononanoic acid (ADONA) from your water?

Try these filter technologies:

Activated Carbon, 

Reverse Osmosis, 

understand filter technology

4,8-dioxa-3H-perfluorononanoic acid (ADONA) around the Country

UTILITIES REPORTING ABOVE HEALTH GUIDELINES UTILITIES WITH CONTAMINATION
State Utilities People Served Utilities People Served
New York120017271,239
California007165,461
Texas004110,911
Alabama214,622972,816
Massachusetts00557,786
Connecticut114,691114,691
Louisiana0048,793
Michigan0013,883
Rhode Island0033,321
Colorado0011,505
North Carolina001913
Minnesota002542

Utilities with the highest amounts of ADONA, 2018-2024

ALL UTILITIES
LARGE UTILITIES
Utility Location Tests Average level People served
Flemings Mobile Home ParkSelkirk, NY1 of 118.8 ppt200
Lincoln, City ofLincoln, AL1 of 1212.5 ppt10,218
Aquarion Water Company of Connecticut - Simsbury SystemSimsbury, CT1 of 32.70 ppt14,691
Moundville Water WorksMoundville, AL1 of 22.10 ppt4,404
Newton Grove, Town ofNewton Grove, NC1 of 11.30 ppt913
Lancaster Park Mobile Home ParkLancaster, CA1 of 61.10 ppt60
Bells Pond Mobile Park NorthHudson, NY1 of 20.950 ppt150
Salem Water SystemFarmerville, LA2 of 40.925 ppt753
Quail Ridge Estates Water SystemLake Charles, LA2 of 40.925 ppt1,119
Parkspace La LLC - (tp #1)Elburn, LA2 of 40.925 ppt162
Pascoag Utility District, Water DivisionPascoag, RI1 of 30.727 ppt2,985
Tucker Oaks East Water DistrictAnderson, CA1 of 40.675 ppt95
Hillcrest Village Mobile Home ParkWheat Ridge, CO1 of 30.633 ppt1,505
Liberty New York Water - MerrickMerrick, NY3 of 780.435 ppt177,000
Gonzales County Water Supply CorporationGonzales, TX1 of 80.400 ppt8,781
City of Gonzales*Gonzales, TX1 of 80.400 ppt9,172
Lawrence Sunset Cove AssociationTiverton, RI1 of 30.393 ppt36
Fort Bend County Municipal Utility District 128Sugar Land, TX2 of 220.305 ppt2,049
City of Sugar Land*Sugar Land, TX2 of 220.305 ppt90,909
Port Allen Water SystemPort Allen, LA2 of 120.292 ppt6,759
Shady Harbor Fire DistrictWestwood, RI1 of 100.289 ppt300
Taconic Mobile Home Park LLCThomaston, NY1 of 70.243 ppt40
Castlewood Domestic Water SystemRoseville, CA1 of 140.243 ppt524
Sfpuc-pleasanton Wells*Burlingame, CA1 of 140.243 ppt1
RemerRemer, MN1 of 20.235 ppt369
Taconic ShoresCopake, NY1 of 40.232 ppt950
Agawam Springs Water CompanyPlymouth, MA1 of 40.153 ppt750
Old WestburyBohemia, NY1 of 230.148 ppt4,700
Grove Hill Water WorksGrove Hill, AL1 of 250.140 ppt5,280
Carle Place Water DistrictCarle Place, NY1 of 290.131 ppt9,005
Ardmore Water SystemArdmore, AL1 of 280.121 ppt3,900
City of Rialto*Rialto, CA1 of 320.116 ppt54,453
Kent Water District 1Kent Lakes, NY1 of 90.103 ppt360
Candlewood Park Water DistrictNorth Salem, NY1 of 110.0840 ppt125
PortlandPortland, MI1 of 130.0770 ppt3,883
Grange Road Mobile EstatesRock City Falls, NY1 of 50.0720 ppt52
Herkimer Village*Herkimer, NY1 of 150.0670 ppt8,760
Manion Heights Water DistrictMohawk, NY1 of 150.0670 ppt105
Herkimer WD #3 (highland-steuben)Herkimer, NY1 of 150.0670 ppt192
East Herkimer Water DistrictHerkimer, NY1 of 150.0670 ppt1,024
Big FallsBig Falls, MN1 of 40.0450 ppt173
Sands PointPort Washington, NY1 of 300.0330 ppt2,800
Rainbow City Utilities Board*Rainbow City, AL1 of 350.0310 ppt12,363
Margaret Water WorksMargaret, AL1 of 350.0310 ppt5,688
Northwest St. Clair Water System*Steele, AL1 of 350.0310 ppt2,886
Odenville*Odenville, AL1 of 350.0310 ppt23,637
Cook Springs Water Authority*Pell City, AL1 of 350.0310 ppt4,440
City of PleasantonPleasanton, CA1 of 700.0300 ppt79,871
Glenville Water District #11*, NY1 of 210.0220 ppt63,776
Charlton Water District (glenville)Charlton, NY1 of 210.0220 ppt2,000

* 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 4,8-dioxa-3H-perfluorononanoic acid (ADONA) , but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
Lincoln, City ofLincoln, AL1 of 1212.5 ppt10,218
Aquarion Water Company of Connecticut - Simsbury SystemSimsbury, CT1 of 32.70 ppt14,691
Liberty New York Water - MerrickMerrick, NY3 of 780.435 ppt177,000
City of Sugar Land*Sugar Land, TX2 of 220.305 ppt90,909
City of Rialto*Rialto, CA1 of 320.116 ppt54,453
Rainbow City Utilities Board*Rainbow City, AL1 of 350.0310 ppt12,363
Odenville*Odenville, AL1 of 350.0310 ppt23,637
City of PleasantonPleasanton, CA1 of 700.0300 ppt79,871
Glenville Water District #11*, NY1 of 210.0220 ppt63,776
Atascadero Mutual Water CompanyAtascadero, CA1 of 3500.0110 ppt30,457
Chelmsford Water DistrictChelmsford, MA1 of 1140.00600 ppt28,079
Sudbury Water DistrictSudbury, MA1 of 1330.00500 ppt18,410

* 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 4,8-dioxa-3H-perfluorononanoic acid (ADONA) , but it likely has the contaminant in its water supply.

Know the Standards

Understand EWG’s guidelines on contaminants in your water.

view ewg’s standards

Take Action

Interested in supporting other causes? Learn more about our ongoing campaigns and how you can make a difference.

LEARN MORE

Need help finding a filter?

Discover top-rated filters that protect your family from harmful contaminants.

GET THE GUIDE

We’re in this together

Donate today and join the fight to protect our environmental health.

DONATE TODAY

Protect your water

Sign our petition to protect PFAS drinking water standards

TAKE ACTION