EPA data as of Oct 2026 · page updated 2026-10-30
Tennessee: drinking water & radon
Tennessee has 454 active community water systems. Since 2016, 107 reported health-based violations; 0 had a latest lead result above 15 ppb; 37 measured PFOA or PFOS at or above 4 ppt.
Water systems454
With violations107
Radon zone 1 ZIPs327
ZIPs likely on wells31
Radon zones in Tennessee
tap a countyZone 1 · highestZone 2 · moderateZone 3 · low
Most health-based violations
| Warren County U.D. #2 5,611 people | 50 |
| Jackson County U.D. #3 3,917 people | 23 |
| Tracy City Water System 5,692 people | 18 |
| Byrdstown Water Department 8,658 people | 15 |
| Clifton Water Dept 4,110 people | 14 |
| Bedford County U.D. 23,641 people | 13 |
| River Landing Condominium Assoc 52 people | 12 |
| South Giles Utility District 6,985 people | 11 |
| Oneida Water and Sewer Commission 11,600 people | 10 |
| Rogersville Water Dept 13,729 people | 9 |
Highest latest lead (90th percentile)
| The Farm Water System 210 people | 13 ppb |
| Cherokee Hills U.D. 258 people | 12.1 ppb |
| Claiborne Utilities District 16,135 people | 12 ppb |
| Moscow Water Dept 821 people | 11.1 ppb |
| Decherd Water Dept 4,809 people | 7.9 ppb |
| West Point U.D. 421 people | 7.6 ppb |
| Lawrenceburg Utility Systems 21,244 people | 7.3 ppb |
| Cumberland Plateau W.A.#3 5,659 people | 6.4 ppb |
| Nolensville-College Grove U.D. 34,159 people | 6.2 ppb |
| White Pine Water System 4,171 people | 5.2 ppb |
Highest PFOA / PFOS
| Savannah Valley U.D. 30,571 people | 35 ppt |
| Trenton Water System 5,155 people | 27 ppt |
| First U.D. of Hardin County 7,602 people | 25.9 ppt |
| Camden Water Dept 10,013 people | 24 ppt |
| North U.Dep. of Decatur/Benton Co 3,818 people | 20.3 ppt |
| Jackson Water System 91,111 people | 20 ppt |
| Scotts Hill Water System 4,579 people | 17 ppt |
| Clifton Water Dept 4,110 people | 17 ppt |
| Savannah Utility Department 19,495 people | 15.8 ppt |
| Parsons Water Department 4,303 people | 13 ppt |
Largest systems
| Metro Water Services 789,969 people | 789,969 |
| Memphis Light, Gas, & Water 659,500 people | 659,500 |
| Knoxville Utilities Board - Kub 254,671 people | 254,671 |
| Clarksville Water Department 251,864 people | 251,864 |
| Consolidated U.D. of Rutherford Co 221,871 people | 221,871 |
| Tennessee American Water 207,046 people | 207,046 |
| White House Utility District 130,411 people | 130,411 |
| First U.D. of Knox County 115,531 people | 115,531 |
| Murfreesboro Water Department 114,331 people | 114,331 |
| Kingsport Water Dept 107,739 people | 107,739 |
All ZIP codes in Tennessee
774 ZIP codes.
37010Adams37011Antioch37012Alexandria37013Antioch37014Arrington37015Ashland City37016Auburntown37018Beechgrove37019Belfast37020Bell Buckle37022Bethpage37023Big Rock37024Brentwood37025Bon Aqua37026Bradyville37027Brentwood37028Bumpus Mills37029Burns37030Carthage37031Castalian Springs37032Cedar Hill37033Centerville37034Chapel Hill37035Chapmansboro37036Charlotte37037Christiana37040Clarksville37041Clarksville37042Clarksville37043Clarksville37044Clarksville37046College Grove37047Cornersville37048Cottontown37049Cross Plains37050Cumberland City37051Cumberland Furnace37052Cunningham37055Dickson37056Dickson37057Dixon Springs37058Dover37059Dowelltown37060Eagleville37061Erin37062Fairview37063Fosterville37064Franklin37065Franklin37066Gallatin37067Franklin37068Franklin37069Franklin37070Goodlettsville37071Gladeville37072Goodlettsville37073Greenbrier37074Hartsville37075Hendersonville37076Hermitage37077Hendersonville37078Hurricane Mills37079Indian Mound37080Joelton37082Kingston Springs37083Lafayette37085Lascassas37086La Vergne37087Lebanon37088Lebanon37089La Vergne37090Lebanon37091Lewisburg37095Liberty37096Linden37097Lobelville37098Lyles37101Mc Ewen37110Mcminnville37111Mcminnville37115Madison37116Madison37118Milton37119Mitchellville37121Mount Juliet37122Mount Juliet37127Murfreesboro37128Murfreesboro37129Murfreesboro37130Murfreesboro37131Murfreesboro37132Murfreesboro37133Murfreesboro37134New Johnsonville37135Nolensville37136Norene37137Nunnelly37138Old Hickory37140Only37141Orlinda37142Palmyra37143Pegram37144Petersburg37145Pleasant Shade37146Pleasant View37148Portland37149Readyville37150Red Boiling Springs37151Riddleton37152Ridgetop37153Rockvale37160Shelbyville37161Shelbyville37162Shelbyville37165Slayden37166Smithville37167Smyrna37171Southside37172Springfield37174Spring Hill37175Stewart37178Tennessee Ridge37179Thompsons Station37180Unionville37181Vanleer37183Wartrace37184Watertown37185Waverly37186Westmoreland37187White Bluff37188White House37189Whites Creek37190Woodbury37191Woodlawn37201Nashville37202Nashville37203Nashville37204Nashville37205Nashville37206Nashville37207Nashville37208Nashville37209Nashville37210Nashville37211Nashville37212Nashville37213Nashville37214Nashville37215Nashville37216Nashville37217Nashville37218Nashville37219Nashville37220Nashville37221Nashville37222Nashville37224Nashville37227Nashville37228Nashville37229Nashville37230Nashville37234Nashville37235Nashville37236Nashville37238Nashville37241Nashville37242Nashville37244Nashville37246Nashville37250Nashville37301Altamont37302Apison37303Athens37304Bakewell37305Beersheba Springs37306Belvidere37307Benton37308Birchwood37309Calhoun37310Charleston37311Cleveland37312Cleveland37313Coalmont37314Cokercreek37315Collegedale37316Conasauga37317Copperhill37318Cowan37320Cleveland37321Dayton37322Decatur37323Cleveland37324Decherd37325Delano37326Ducktown37327Dunlap37328Elora37329Englewood37330Estill Springs37331Etowah37332Evensville37333Farner37334Fayetteville37335Flintville37336Georgetown37337Grandview37338Graysville37339Gruetli Laager37340Guild37341Harrison37342Hillsboro37343Hixson37345Huntland37347Jasper37348Kelso37349Manchester37350Lookout Mountain37351Lupton City37352Lynchburg37353Mc Donald37354Madisonville37355Manchester37356Monteagle37357Morrison37359Mulberry37360Normandy37361Ocoee37362Old Fort37363Ooltewah37364Cleveland37365Palmer37366Pelham37367Pikeville37369Reliance37370Riceville37371Athens37373Sale Creek37374Sequatchie37375Sewanee37376Sherwood37377Signal Mountain37378Smartt37379Soddy Daisy37380South Pittsburg37381Spring City37382Summitville37383Sewanee37384Soddy Daisy37385Tellico Plains37387Tracy City37388Tullahoma37389Arnold Afb37391Turtletown37394Viola37396Whiteside37397Whitwell37398Winchester37401Chattanooga37402Chattanooga37403Chattanooga37404Chattanooga37405Chattanooga37406Chattanooga37407Chattanooga37408Chattanooga37409Chattanooga37410Chattanooga37411Chattanooga37412Chattanooga37414Chattanooga37415Chattanooga37416Chattanooga37419Chattanooga37421Chattanooga37422Chattanooga37424Chattanooga37501Memphis37544Memphis37601Johnson City37602Johnson City37604Johnson City37605Johnson City37614Johnson City37615Johnson City37616Afton37617Blountville37618Bluff City37620Bristol37621Bristol37625Bristol37640Butler37641Chuckey37642Church Hill37643Elizabethton37644Elizabethton37645Mount Carmel37650Erwin37656Fall Branch37657Flag Pond37658Hampton37659Jonesborough37660Kingsport37662Kingsport37663Kingsport37664Kingsport37665Kingsport37669Kingsport37680Laurel Bloomery37681Limestone37682Milligan College37683Mountain City37684Mountain Home37686Piney Flats37687Roan Mountain37688Shady Valley37690Telford37691Trade37692Unicoi37694Watauga37699Piney Flats37701Alcoa37705Andersonville37707Arthur37708Bean Station37709Blaine37710Briceville37711Bulls Gap37713Bybee37714Caryville37715Clairfield37716Clinton37717Clinton37719Coalfield37721Corryton37722Cosby37723Crab Orchard37724Cumberland Gap37725Dandridge37726Deer Lodge37727Del Rio37729Duff37730Eagan37731Eidson37732Elgin37733Rugby37737Friendsville37738Gatlinburg37742Greenback37743Greeneville37744Greeneville37745Greeneville37748Harriman37752Harrogate37753Hartford37754Heiskell37755Helenwood37756Huntsville37757Jacksboro37760Jefferson City37762Jellico37763Kingston37764Kodak37765Kyles Ford37766La Follette37769Lake City37770Lancing37771Lenoir City37772Lenoir City37773Lone Mountain37774Loudon37777Louisville37779Luttrell37801Maryville37802Maryville37803Maryville37804Maryville37806Mascot37807Maynardville37809Midway37810Mohawk37811Mooresburg37813Morristown37814Morristown37815Morristown37816Morristown37818Mosheim37819Newcomb37820New Market37821Newport37822Newport37824New Tazewell37825New Tazewell37826Niota37828Norris37829Oakdale37830Oak Ridge37831Oak Ridge37840Oliver Springs37841Oneida37843Parrottsville37845Petros37846Philadelphia37847Pioneer37848Powder Springs37849Powell37851Pruden37852Robbins37853Rockford37854Rockwood37857Rogersville37860Russellville37861Rutledge37862Sevierville37863Pigeon Forge37864Sevierville37865Seymour37866Sharps Chapel37867Shawanee37868Pigeon Forge37869Sneedville37870Speedwell37871Strawberry Plains37872Sunbright37873Surgoinsville37874Sweetwater37876Sevierville37877Talbott37878Tallassee37879Tazewell37880Ten Mile37881Thorn Hill37882Townsend37885Vonore37886Walland37887Wartburg37888Washburn37890White Pine37891Whitesburg37892Winfield37901Knoxville37902Knoxville37909Knoxville37912Knoxville37914Knoxville37915Knoxville37916Knoxville37917Knoxville37918Knoxville37919Knoxville37920Knoxville37921Knoxville37922Knoxville37923Knoxville37924Knoxville37927Knoxville37928Knoxville37929Knoxville37930Knoxville37931Knoxville37932Knoxville37933Knoxville37934Knoxville37938Knoxville37939Knoxville37940Knoxville37950Knoxville37995Knoxville37997Knoxville38001Alamo38002Arlington38004Atoka38006Bells38007Bogota38008Bolivar38010Braden38011Brighton38012Brownsville38014Brunswick38015Burlison38016Cordova38017Collierville38018Cordova38019Covington38021Crockett Mills38023Drummonds38024Dyersburg38025Dyersburg38027Collierville38028Eads38029Ellendale38030Finley38034Friendship38036Gallaway38037Gates38039Grand Junction38040Halls38041Henning38042Hickory Valley38044Hornsby38045Laconia38047Lenox38048Macon38049Mason38050Maury City38052Middleton38053Millington38054Millington38055Millington38057Moscow38058Munford38059Newbern38060Oakland38061Pocahontas38063Ripley38066Rossville38067Saulsbury38068Somerville38069Stanton38070Tigrett38071Tipton38075Whiteville38076Williston38077Wynnburg38079Tiptonville38080Ridgely38083Millington38088Cordova38101Memphis38103Memphis38104Memphis38105Memphis38106Memphis38107Memphis38108Memphis38109Memphis38111Memphis38112Memphis38113Memphis38114Memphis38115Memphis38116Memphis38117Memphis38118Memphis38119Memphis38120Memphis38122Memphis38124Memphis38125Memphis38126Memphis38127Memphis38128Memphis38130Memphis38131Memphis38132Memphis38133Memphis38134Memphis38135Memphis38136Memphis38137Memphis38138Germantown38139Germantown38141Memphis38145Memphis38148Memphis38150Memphis38151Memphis38157Memphis38159Memphis38161Memphis38163Memphis38166Memphis38167Memphis38168Memphis38173Memphis38174Memphis38175Memphis38177Memphis38181Memphis38182Memphis38183Germantown38184Memphis38186Memphis38187Memphis38188Memphis38190Memphis38193Memphis38194Memphis38197Memphis38201Mc Kenzie38220Atwood38221Big Sandy38222Buchanan38223Como38224Cottage Grove38225Dresden38226Dukedom38229Gleason38230Greenfield38231Henry38232Hornbeak38233Kenton38235Mc Lemoresville38236Mansfield38237Martin38240Obion38241Palmersville38242Paris38251Puryear38253Rives38254Samburg38255Sharon38256Springville38257South Fulton38258Trezevant38259Trimble38260Troy38261Union City38271Woodland Mills38281Union City38301Jackson38302Jackson38303Jackson38305Jackson38308Jackson38310Adamsville38311Bath Springs38313Beech Bluff38314Jackson38315Bethel Springs38316Bradford38317Bruceton38318Buena Vista38320Camden38321Cedar Grove38324Clarksburg38326Counce38327Crump38328Darden38329Decaturville38330Dyer38331Eaton38332Enville38333Eva38334Finger38336Fruitvale38337Gadsden38338Gibson38339Guys38340Henderson38341Holladay38342Hollow Rock38343Humboldt38344Huntingdon38345Huron38346Idlewild38347Jacks Creek38348Lavinia38351Lexington38352Luray38355Medina38356Medon38357Michie38358Milan38359Milledgeville38361Morris Chapel38362Oakfield38363Parsons38365Pickwick Dam38366Pinson38367Ramer38368Reagan38369Rutherford38370Saltillo38371Sardis38372Savannah38374Scotts Hill38375Selmer38376Shiloh38377Silerton38378Spring Creek38379Stantonville38380Sugar Tree38381Toone38382Trenton38387Westport38388Wildersville38389Yorkville38390Yuma38391Denmark38392Mercer38393Chewalla38401Columbia38402Columbia38425Clifton38449Ardmore38450Collinwood38451Culleoka38452Cypress Inn38453Dellrose38454Duck River38455Elkton38456Ethridge38457Five Points38459Frankewing38460Goodspring38461Hampshire38462Hohenwald38463Iron City38464Lawrenceburg38468Leoma38469Loretto38471Lutts38472Lynnville38473Minor Hill38474Mount Pleasant38475Olivehill38476Primm Springs38477Prospect38478Pulaski38481Saint Joseph38482Santa Fe38483Summertown38485Waynesboro38486Westpoint38487Williamsport38488Taft38501Cookeville38502Cookeville38503Cookeville38504Allardt38506Cookeville38541Allons38542Allred38543Alpine38544Baxter38545Bloomington Springs38547Brush Creek38548Buffalo Valley38549Byrdstown38550Campaign38551Celina38552Chestnut Mound38553Clarkrange38554Crawford38555Crossville38556Jamestown38557Crossville38558Crossville38559Doyle38560Elmwood38562Gainesboro38563Gordonsville38564Granville38565Grimsley38567Hickman38568Hilham38569Lancaster38570Livingston38571Crossville38572Crossville38573Monroe38574Monterey38575Moss38577Pall Mall38578Pleasant Hill38579Quebeck38580Rickman38581Rock Island38582Silver Point38583Sparta38585Spencer38587Walling38588Whitleyville38589Wilder
What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.
Questions
How many water systems in Tennessee have violations?
107 of 454 active community water systems in Tennessee reported at least one health-based violation since 2016 (EPA SDWIS).
What is the radon risk in Tennessee?
327 ZIP codes are in EPA radon zone 1 (highest potential), 214 in zone 2 and 233 in zone 3. EPA recommends testing every home.