PFAS in Louisiana drinking water
EPA's final UCMR 5 data covers 268 public water systems in Louisiana, serving about 4.6 million people. PFAS turned up in 48 of them (18%). 1 averaged above at least one EPA limit at a sampling point, affecting about 6,354 people.
Highest PFOA and PFOS averages among systems serving 1,000 or more: City of Vidalia Water System (19.0 / 7.9 ppt).
Every tested system in Louisiana
Largest first. PFOA and PFOS columns show the average at each system's worst sampling point; EPA's limit for each is 4 ppt. Filter by name:
| Water system | People | PFOA | PFOS | PFAS found | Result |
|---|---|---|---|---|---|
| Baton Rouge Water Company · Baton Rouge | 596,844 | - | - | 0 | None found |
| New Orleans Carrollton Ww · New Orleans | 334,903 | 1.0 | 1.1 | 6 | Sample at limit |
| E Jefferson Ww District 1 · Jefferson | 275,163 | - | - | 1 | Below limits |
| Shreveport Water System · Shreveport | 192,378 | - | - | 1 | Below limits |
| Lafayette Utilities Water System · Lafayette | 169,389 | - | - | 0 | None found |
| W Jefferson Ww District 2 · Jefferson | 140,264 | - | - | 1 | Below limits |
| Schriever Water Treatment Service Area · Houma | 116,460 | - | - | 2 | Below limits |
| Lafourche Water District 1 · Lockport | 81,609 | - | - | 1 | Below limits |
| City of Bossier City Water System · Bossier City | 79,506 | - | - | 0 | None found |
| City of Lake Charles Water System · Lake Charles | 79,500 | - | - | 0 | None found |
| Ward Ii Water District · Denham Springs | 78,147 | - | - | 0 | None found |
| Tangipahoa Parish Water District · Natalbany | 75,873 | - | - | 0 | None found |
| City of Alexandria Water System · Alexandria | 66,798 | - | - | 0 | None found |
| New Iberia Water System (lawco) · Baton Rouge | 59,928 | - | - | 0 | None found |
| Monroe Water System · Monroe | 57,000 | - | - | 1 | Below limits |
| St Charles Parish Dept of Waterworks · Luling | 52,879 | - | - | 1 | Below limits |
| New Orleans Algiers Water Works · New Orleans | 52,785 | 1.0 | 1.1 | 3 | Sample at limit |
| St Bernard Parish Waterworks · Chalmette | 44,783 | - | - | 0 | None found |
| Slidell Water Supply · Slidell | 35,547 | - | - | 0 | None found |
| St John Water District 3 · Laplace | 31,965 | - | - | 0 | None found |
| Zachary Water System · Zachary | 31,569 | - | - | 0 | None found |
| Natchitoches Water System · Natchitoches | 27,693 | - | - | 1 | Below limits |
| City of Denham Springs Water System · Denham Springs | 25,725 | - | - | 0 | None found |
| Sulphur City of Water System · Sulphur | 24,489 | - | - | 0 | None found |
| Vermilion Waterworks District 1 · Maurice | 24,132 | - | - | 0 | None found |
| Beauregard Water Works Dist #3 · Longville | 24,000 | - | - | 0 | None found |
| Ruston Water System · Ruston | 22,468 | - | - | 0 | None found |
| Assumption Parish Ww District 1 · Napoleonville | 21,366 | - | - | 2 | Below limits |
| City of Hammond Water System · Hammond | 21,135 | - | - | 0 | None found |
| Calcasieu Parish Ww District No 1 · Lake Charles | 20,837 | - | - | 0 | None found |
| City of Opelousas Water System · Opelousas | 20,388 | - | - | 0 | None found |
| City of Pineville Water System · Pineville | 20,358 | - | - | 0 | None found |
| Rapides Parish Waterworks District 3 · Tioga | 19,983 | - | - | 0 | None found |
| Belle Chasse Water District · Belle Chasse | 19,644 | - | - | 1 | Below limits |
| St Tam Parish-faubourg-coquille · Covington | 18,372 | - | - | 0 | None found |
| Bastrop Water System · Bastrop | 18,105 | - | - | 0 | None found |
| Crowley Water System (lawco) · Baton Rouge | 17,733 | - | - | 0 | None found |
| St Tam Parish - Briarwood Terrace · Covington | 17,536 | - | - | 0 | None found |
| Gretna Waterworks · Gretna | 17,026 | - | - | 1 | Below limits |
| Lpwdn North Region · Lafayette | 16,833 | - | - | 0 | None found |
| City of Gonzales Water System · Gonzales | 16,806 | - | - | 0 | None found |
| Blanchard Water System · Blanchard | 16,326 | - | - | 0 | None found |
| Minden Water System · Minden | 16,281 | - | - | 0 | None found |
| Covington Water Supply · Covington | 16,185 | - | - | 0 | None found |
| West Monroe Water System · West Monroe | 16,005 | - | - | 0 | None found |
| Walker Water System · Walker | 15,813 | - | - | 0 | None found |
| Eunice Water System (lawco) · Baton Rouge | 15,393 | - | - | 0 | None found |
| Lpwd South · Duson | 15,132 | - | - | 0 | None found |
| Thibodaux Waterworks · Thibodaux | 14,862 | - | - | 0 | None found |
| East Feliciana Rural Gurley Rd Ws · Ethel | 14,829 | - | - | 0 | None found |
| West Hwy 80 Ark Road Ws · West Monroe | 14,649 | - | - | 0 | None found |
| Calcasieu Parish Ww Dist 9 Carlyss · Sulphur | 14,502 | - | - | 0 | None found |
| City of Deridder Water System · Deridder | 14,400 | - | - | 0 | None found |
| City of Abbeville Water System · Abbeville | 14,217 | - | - | 1 | Below limits |
| City of Plaquemine Water System · Plaquemine | 14,043 | 3.1 | 3.0 | 5 | Sample at limit |
| City of Bogalusa Water System · Bogalusa | 14,000 | - | - | 0 | None found |
| City of Baker Water System · Baker | 13,855 | - | - | 0 | None found |
| West Baton Rouge Water Works District 2 · Port Allen | 13,437 | - | - | 0 | None found |
| Gowc North Water System · West Monroe | 13,287 | - | - | 0 | None found |
| Barksdale Afb Water System · Barksdale Afb | 13,000 | - | - | 0 | None found |
| Mandeville Water Supply · Mandeville | 13,000 | - | - | 0 | None found |
| Village of Parks Water System · Parks | 12,801 | 3.2 | 2.1 | 4 | Sample at limit |
| Morgan City Water System · Morgan City | 12,703 | - | - | 0 | None found |
| Cecilia Water Corporation · Cecilia | 12,420 | - | - | 0 | None found |
| Buckeye Water District 50 · Deville | 12,078 | - | - | 0 | None found |
| West Feliciana Consol Wwks District 13 · St. Francisville | 12,045 | - | - | 0 | None found |
| GOWC East · West Monroe | 11,742 | - | - | 0 | None found |
| Houma Water Treatment Service Area · Houma | 11,658 | - | - | 2 | Below limits |
| City of Carencro Water System · Carencro | 11,301 | - | - | 0 | None found |
| Utilities INC - North Park Water Supply · Mandeville | 11,298 | - | - | 0 | None found |
| Cheniere Drew North Water System · West Monroe | 11,280 | - | - | 0 | None found |
| City of Rayne Water System · Rayne | 10,908 | - | - | 0 | None found |
| Fort Polk South Water System · Fort Polk | 10,902 | - | - | 0 | None found |
| Village Water System · Benton | 10,890 | - | - | 1 | Below limits |
| Bayou Liberty Water Association · Slidell | 10,791 | - | - | 0 | None found |
| Southwest Ouachita Waterworks, INC · West Monroe | 10,725 | - | - | 0 | None found |
| Pointe Coupee Water Works District 1 · New Roads | 10,629 | - | - | 1 | Below limits |
| City of Leesville Water System · Leesville | 10,545 | - | - | 0 | None found |
| St John Water District 1 · Laplace | 10,484 | - | - | 1 | Below limits |
| Port Sulphur Water District · Belle Chasse | 10,308 | - | 2.1 | 2 | Sample at limit |
| Magnolia Water Utilities - Eden Isles · Des Peres | 10,155 | - | - | 0 | None found |
| Bayou Teche Water Works · Loreauville | 10,137 | - | - | 0 | None found |
| City of Breaux Bridge Water System · Breaux Bridge | 10,098 | - | - | 0 | None found |
| City of Jennings Water System · Jennings | 9,837 | - | - | 0 | None found |
| Jeff Davis Water and Sewer Commission 1 · Lake Arthur | 9,780 | - | - | 0 | None found |
| Parish Utilities of Ascension · Donaldsonville | 9,732 | - | 1.1 | 3 | Sample at limit |
| Water & Sewer Commission 4 of St Mary · Charenton | 9,709 | - | - | 1 | Below limits |
| City of Scott Water System · Scott | 9,696 | - | - | 0 | None found |
| Brownville Water System · West Monroe | 9,696 | - | - | 0 | None found |
| Town of Leonville Water System · Leonville | 9,552 | - | - | 0 | None found |
| Mire Branch Water Corporation · Church Point | 9,480 | - | - | 0 | None found |
| Fort Polk North Water System · Fort Polk | 9,420 | - | - | 0 | None found |
| Kiroli Darbonne Ws · West Monroe | 9,210 | - | - | 0 | None found |
| New Roads Water System · New Roads | 9,024 | - | - | 0 | None found |
| Town of Livingston Water System · Livingston | 8,946 | - | - | 0 | None found |
| Iberia Water Works District 3 - Coteau · New Iberia | 8,775 | - | - | 0 | None found |
| Wwks District 2 of St Helena · Greensburg | 8,772 | - | - | 0 | None found |
| Magnolia Plantation Water System INC · Abbeville | 8,769 | - | - | 0 | None found |
| Tallulah Water System · Tallulah | 8,601 | - | - | 0 | None found |
| Westwego Waterworks · Westwego | 8,534 | - | - | 0 | None found |
| Patterson Water System · Patterson | 8,456 | - | - | 2 | Below limits |
| Natchitoches Parish Wwks District 2 · Natchez | 8,415 | - | - | 0 | None found |
| Franklin Water Supply · Franklin | 8,325 | - | - | 1 | Below limits |
| Lewisburg Bellevue Water System · Opelousas | 8,226 | - | - | 0 | None found |
| Southwest Allen Ww District No 2 · Kinder | 8,106 | - | - | 1 | Below limits |
| Town of Benton Water System · Benton | 8,037 | - | - | 1 | Below limits |
| St Tam Parish - Cross Gates Sd · Covington | 8,037 | - | - | 1 | Below limits |
| Magnolia Water Utilities - Greenleaves · Des Peres | 8,031 | - | - | 0 | None found |
| North Franklin Water Works · Crowville | 7,989 | - | - | 0 | None found |
| St Mary Water & Sewer Comm #3 · Centerville | 7,828 | - | - | 1 | Below limits |
| Springhill Water System · Springhill | 7,800 | - | - | 0 | None found |
| Lee Road Water Corporation · Covington | 7,665 | - | - | 0 | None found |
| City of Youngsville Purchase Ws · Youngsville | 7,623 | - | - | 0 | None found |
| North Desoto Water System · Stonewall | 7,608 | - | - | 0 | None found |
| City of Marksville Water System · Marksville | 7,593 | - | - | 0 | None found |
| Winnsboro Water System · Winnsboro | 7,518 | - | - | 0 | None found |
| St James Water District 2 · Convent | 7,513 | - | - | 1 | Below limits |
| Mansfield Water System · Mansfield | 7,512 | - | - | 1 | Below limits |
| South Monroe Ws Gowc · West Monroe | 7,335 | - | - | 0 | None found |
| Savoy Swords Water System INC · Eunice | 7,326 | - | - | 0 | None found |
| Town of Albany Water System · Albany | 7,305 | - | - | 0 | None found |
| City of St Martinville Water System · St. Martinville | 7,263 | - | - | 0 | None found |
| St James Water District 1 · Convent | 7,200 | - | - | 0 | None found |
| City of Winnfield Water System · Winnfield | 7,194 | - | - | 0 | None found |
| Desoto Parish Water Works District 1 · Mansfield | 7,173 | - | - | 2 | Below limits |
| Sabine Parish Water District 1 · Many | 6,924 | - | - | 0 | None found |
| Concordia Waterworks District 1 · Ferriday | 6,921 | - | - | 0 | None found |
| Houston River Waterworks District 11 · Sulphur | 6,915 | - | - | 0 | None found |
| Resolve Whisperwood Estates Sd Ws · Des Peres | 6,867 | - | - | 0 | None found |
| Calcasieu Parish Ww District 8 · Lake Charles | 6,834 | - | - | 0 | None found |
| Southeast Waterworks District 2 · Abbeville | 6,810 | - | - | 0 | None found |
| Port Allen Water System · Port Allen | 6,759 | - | - | 0 | None found |
| Ebarb Wwks Dist # 1 - Aimwell Area · Zwolle | 6,738 | - | - | 0 | None found |
| Iberville Waterworks District #2 · Plaquemine | 6,657 | - | - | 0 | None found |
| Pontchatoula Water System · Ponchatoula | 6,657 | - | - | 0 | None found |
| Beauregard District No 2 Ward No 5 · Singer | 6,613 | - | - | 0 | None found |
| City of Ville Platte Water System · Ville Platte | 6,590 | - | - | 0 | None found |
| Intracoastal Water System West · Plaquemine | 6,489 | - | - | 1 | Below limits |
| Plaisance Water System · Opelousas | 6,465 | - | - | 0 | None found |
| East Central Vernon Water System · Slagle | 6,363 | - | - | 0 | None found |
| Louisiana State Penitentiary · Angola | 6,362 | - | - | 0 | None found |
| City of Vidalia Water System · Vidalia | 6,354 | 19.0 | 7.9 | 8 | Above limit |
| Utilities INC - Kingspoint Subdivision · Mandeville | 6,351 | - | - | 0 | None found |
| Jonesboro Water System · Jonesboro | 6,231 | - | - | 0 | None found |
| Cadeville Water District · West Monroe | 6,219 | - | - | 0 | None found |
| City of Jeanerette Water System · Jeanerette | 6,189 | - | - | 1 | Below limits |
| City of Oakdale Water System · Oakdale | 6,114 | - | - | 0 | None found |
| Prairie Ronde Water System INC · Lawtell | 6,090 | - | - | 0 | None found |
| Grambling State University Ws · Grambling | 6,000 | - | - | 0 | None found |
| South Toledo Bend Water District · Many | 5,943 | - | - | 1 | Below limits |
| Lake Providence Water System · Lake Providence | 5,850 | - | - | 0 | None found |
| Waterworks District 7 · Keithville | 5,817 | - | - | 0 | None found |
| Town & Country Service · Des Peres | 5,715 | - | - | 1 | Below limits |
| Jeff Davis Central Waterworks District · Welsh | 5,709 | - | - | 0 | None found |
| Fifth Ward Water System · Marksville | 5,676 | - | - | 0 | None found |
| Rapides Island Water Association INC · Boyce | 5,658 | - | - | 0 | None found |
| East Side Water System · Ville Platte | 5,640 | - | - | 0 | None found |
| Wbr District 4 -section Road Winterville · Port Allen | 5,571 | - | - | 0 | None found |
| Henderson Nina Water System INC · Breaux Bridge | 5,535 | - | - | 0 | None found |
| Cypress Black Bayou Water System · Benton | 5,520 | - | - | 0 | None found |
| St Mary Parish W&s #2 Bayou Vista · Patterson | 5,379 | - | - | 3 | Below limits |
| Dequincy Water System (lawco) · Baton Rouge | 5,370 | - | - | 0 | None found |
| Town of Haughton Water System · Haughton | 5,355 | - | - | 0 | None found |
| Farmerville Water System · Farmerville | 5,352 | - | - | 2 | Below limits |
| Calcasieu Parish Ww District No 4 · Westlake | 5,340 | - | - | 0 | None found |
| Egan Water Corporation · Egan | 5,337 | - | - | 0 | None found |
| Vernon Parish Water and Sewer Commission · New Llano | 5,295 | - | - | 0 | None found |
| Village of Turkey Creek Water System · Turkey Creek | 5,289 | - | - | 0 | None found |
| South Grant Water Corporation · Bentley | 5,289 | - | - | 0 | None found |
| Monterey Rural Water System INC · Monterey | 5,250 | - | - | 0 | None found |
| Town of Greenwood Water System · Greenwood | 5,205 | - | - | 1 | Below limits |
| St Tammany Water Dist 2 · Covington | 5,200 | - | - | 0 | None found |
| Town of Bunkie Water System · Bunkie | 5,169 | - | - | 0 | None found |
| City of Broussard Water System · Broussard | 5,151 | - | - | 0 | None found |
| Calcasieu Parish Ww District No 5 · Lake Charles | 5,088 | - | - | 0 | None found |
| Town of Berwick · Berwick | 5,024 | - | - | 1 | Below limits |
| Kolin Ruby Wise Waterwork District 11 a · Pineville | 4,992 | - | - | 0 | None found |
| Grambling Water System · Grambling | 4,949 | - | - | 0 | None found |
| Pinehill Waterworks District · Shreveport | 4,926 | - | - | 1 | Below limits |
| Westlake City of Water System · Westlake | 4,858 | - | - | 0 | None found |
| Rayville Water System · Rayville | 4,842 | - | - | 1 | Below limits |
| Town of Woodworth Water System · Woodworth | 4,818 | - | - | 0 | None found |
| Calcasieu Parish Ww District 7 · Dequincy | 4,791 | - | - | 0 | None found |
| Lutcher Waterworks · Lutcher | 4,781 | - | - | 1 | Below limits |
| St Landry Water Works District 2 Rural · Sunset | 4,761 | - | - | 0 | None found |
| Magnolia Water Utilities - the Meadows · Des Peres | 4,701 | - | - | 0 | None found |
| Beau Chene Water System · Mandeville | 4,650 | - | - | 0 | None found |
| Bayou Des Cannes Water System · Basile | 4,578 | - | - | 0 | None found |
| Gardner Community Water System · Boyce | 4,566 | - | - | 0 | None found |
| Town of Mamou Water System · Mamou | 4,559 | - | - | 0 | None found |
| Homer Water System · Denham Springs | 4,524 | - | - | 0 | None found |
| Keatchie Water System · Grand Cane | 4,446 | - | - | 0 | None found |
| United Water System · Arnaudville | 4,446 | - | - | 0 | None found |
| City of Many Water System · Many | 4,428 | - | - | 1 | Below limits |
| West Vernon Parish Waterworks District · Anacoco | 4,365 | - | - | 0 | None found |
| Town of Sunset Water System · Sunset | 4,356 | - | - | 0 | None found |
| City of Kaplan Water System · Kaplan | 4,340 | - | - | 0 | None found |
| Wbr Public Utilities · Port Allen | 4,329 | - | - | 0 | None found |
| Town of Welsh Water System · Welsh | 4,311 | - | - | 0 | None found |
| Town of Amite Water System · Amite | 4,300 | - | - | 0 | None found |
| Fswc - Hammond Heights · Mandeville | 4,281 | - | - | 0 | None found |
| South Rayne Water Corporation · Rayne | 4,254 | - | - | 0 | None found |
| Town of Plaucheville Water Systm · Plaucheville | 4,233 | - | - | 0 | None found |
| Varnado Water Works · Angie | 4,230 | - | - | 0 | None found |
| Archibald Water System · Archibald | 4,200 | - | - | 0 | None found |
| Bogue-lusa Water Works District · Angie | 4,200 | - | - | 0 | None found |
| Jeff Davis Water District 4 · Jennings | 4,194 | - | - | 0 | None found |
| Town of Church Point Water System · Church Point | 4,176 | - | - | 0 | None found |
| Town of Franklinton Water System · Franklinton | 4,150 | - | - | 0 | None found |
| Arcadia Water System · Arcadia | 4,146 | - | - | 0 | None found |
| Lpwd North Production Facility · Lafayette | 4,122 | - | - | 0 | None found |
| Tangipahoa (second Ward) Water District · Natalbany | 4,112 | - | - | 0 | None found |
| Town of Vinton Water System · Vinton | 4,101 | - | - | 0 | None found |
| South Vernon Parish Waterworks District · Rosepine | 4,083 | - | - | 0 | None found |
| Wesley Chapel Water System · Ruston | 4,080 | - | - | 0 | None found |
| Delhi Water Supply · Delhi | 4,071 | - | - | 0 | None found |
| Vivian Water System · Vivian | 4,050 | - | - | 0 | None found |
| North of Crowley Water Corporation · Rayne | 4,020 | - | - | 0 | None found |
| Dow Usa, La Division · Plaquemine | 3,960 | - | - | 0 | None found |
| Town of Arnaudville Water System · Arnaudville | 3,957 | - | - | 0 | None found |
| Avoyelles Parish Waterworks District 1 · Bordelonville | 3,900 | - | - | 0 | None found |
| Pollock Area Water System INC · Pollock | 3,900 | - | - | 0 | None found |
| South Claiborne Water System · Athens | 3,843 | - | - | 0 | None found |
| Tensas Water District Association · St Joseph | 3,843 | - | - | 1 | Below limits |
| Town of Port Barre Water System · Port Barre | 3,828 | - | - | 0 | None found |
| Town of Ferriday Water System · Ferriday | 3,816 | - | - | 0 | None found |
| Brouillette Water System INC · Marksville | 3,732 | - | - | 0 | None found |
| Avoyelles Ward One Water System INC · Effie | 3,726 | - | - | 0 | None found |
| Lawtell Water Works District No 1 · Lawtell | 3,717 | - | - | 0 | None found |
| St John Water District 2 · Laplace | 3,702 | - | - | 2 | Below limits |
| Abita Springs Water System · Abita Springs | 3,693 | - | - | 0 | None found |
| Town of Iowa Water System · Iowa | 3,636 | - | - | 0 | None found |
| Town of Jena Water System · Jena | 3,614 | - | - | 0 | None found |
| Forest Hill Utilities · Forest Hill | 3,600 | - | - | 0 | None found |
| Lena Water System INC · Lena | 3,540 | - | - | 0 | None found |
| Cameron Parish Ww District 11-sweet Lake · Bell City | 3,507 | - | - | 0 | None found |
| New Carroll Water System · Kilbourne | 3,507 | - | - | 0 | None found |
| Consolidated Waterworks District 2 · Bastrop | 3,498 | - | - | 0 | None found |
| Rural Franklinton Water · Franklinton | 3,450 | - | - | 0 | None found |
| Greater Ward 1 Waterworks District · Ruston | 3,333 | - | - | 0 | None found |
| Town of Pearl River · Pearl River | 3,333 | - | - | 0 | None found |
| West Grant Water Association · Alanta | 3,324 | - | - | 0 | None found |
| Town of Maringouin · Maringouin | 3,300 | - | - | 0 | None found |
| Milton Purchase Water System · Milton | 3,300 | - | - | 0 | None found |
| Culbertson Water System · Choudrant | 3,300 | - | - | 0 | None found |
| Coushatta Water System · Coushatta | 3,300 | - | - | 0 | None found |
| New Llano Water Department · New Llano | 3,300 | - | - | 0 | None found |
| Town of Erath Water System · Erath | 2,985 | - | - | 0 | None found |
| Gramercy Waterworks · Gramercy | 2,860 | - | - | 1 | Below limits |
| Town of Lake Arthur Water System · Lake Arthur | 2,706 | - | - | 0 | None found |
| Fairview Union Water System · Coushatta | 2,346 | - | - | 0 | None found |
| Folsom Water Supply · Folsom | 1,992 | - | - | 0 | None found |
| Pleasant Valley Water System · Minden | 1,683 | - | - | 0 | None found |
| North Iberville Water System · Plaquemine | 1,524 | - | - | 0 | None found |
| Summerville Water System · Jena | 1,425 | - | - | 0 | None found |
| Greensburg Water System · Greensburg | 1,340 | - | - | 0 | None found |
| Dubach Water System · Dubach | 1,218 | - | - | 0 | None found |
| Westview Water Works · Amite | 1,134 | - | - | 0 | None found |
| East Carroll Ws South · Transylvania | 1,071 | - | - | 0 | None found |
| Doyline Waterworks District 1 · Doyline | 969 | - | - | 0 | None found |
| Cameron Parish Ww District 9 · Grand Chenier | 871 | - | - | 0 | None found |
| Varnado Water Works - Pine · Angie | 840 | - | - | 0 | None found |
| Gillis Long Center · Carville | 600 | - | - | 0 | None found |
| Tesi Ossun Heights · Des Peres | 393 | - | - | 0 | None found |
| Deltech Corporation · Baton Rouge | 100 | - | - | 0 | None found |
| Chataignier Water System | - | - | 0 | None found | |
| Calhoun Water System | - | - | 0 | None found | |
| False River Water Company | - | - | 0 | None found |
On a private well in Louisiana?
EPA's program only covers public systems. Private wells are never part of UCMR 5, so the only way to know is to test. Our well testing guide covers which lab tests to order, and the best well water systems covers what to install once you have results.
Cite this page
Well & Tap. "PFAS in Louisiana drinking water: results for 268 systems." Data: U.S. EPA UCMR 5, final release August 2026. https://wellandtap.com/pfas/louisiana/
Source: EPA UCMR 5 final occurrence data (August 2026); population from EPA SDWIS. Method.