Results from entry points (water leaving treatment, not household taps) of public water systems sampled under EPA's Fifth Unregulated Contaminant Monitoring Rule. Click a county to see every water system serving it, or turn on service areas and click a location to see the systems that serve that spot.
172 of the 683 public water systems listed for Arkansas were sampled. Sorted by the highest single result relative to EPA's 2024 limits. Each name links to a page with all of that system's results. All 683 Arkansas systems, including those not tested · Download all Arkansas results (CSV, gzip)
| System | PWSID | City | Population | PFOA (ppt) | PFOS (ppt) | HI | Highest single result |
|---|---|---|---|---|---|---|---|
| Dardanelle Waterworks | AR0000601 | Dardanelle | 4,517 | <MRL | 4.4 | 0.53 | PFOS 1–3 × its limit |
| Siloam Springs Waterworks | AR0000056 | Siloam Springs | 23,940 | <MRL | <MRL | 0.004 | Hazard Index below its limit |
| Beebe Waterworks | AR0000592 | Beebe | 9,490 | <MRL | <MRL | 0 | Other PFAS detected |
| Bentonville Water Utilities | AR0000041 | Bentonville | 51,250 | <MRL | <MRL | 0 | Other PFAS detected |
| Crowleys Ridge Water Assoc | AR0000180 | Harrisburg | 3,873 | <MRL | <MRL | 0 | Other PFAS detected |
| Flippin Waterworks | AR0000351 | Flippin | 3,870 | <MRL | <MRL | 0 | Other PFAS detected |
| Hot Spring Co Water Assoc | AR0000236 | Donaldson | 3,528 | <MRL | <MRL | 0 | Other PFAS detected |
| Lakeview-Midway Public Water Authority | AR0000027 | Lakeview | 4,344 | <MRL | <MRL | 0 | Other PFAS detected |
| Nashville Waterworks | AR0000244 | Nashville | 4,153 | <MRL | <MRL | 0 | Other PFAS detected |
| West Stone County Water Assn | AR0000735 | Fox | 5,188 | <MRL | <MRL | 0 | Other PFAS detected |
| Adc - Cummins Unit Maint | AR0000315 | Grady | 4,362 | <MRL | <MRL | 0 | No PFAS detected |
| Alma Waterworks | AR0000144 | Alma | 6,123 | <MRL | <MRL | 0 | No PFAS detected |
| Arkadelphia Waterworks | AR0000085 | Arkadelphia | 11,855 | <MRL | <MRL | 0 | No PFAS detected |
| Ashdown Waterworks | AR0000320 | Ashdown | 4,261 | <MRL | <MRL | 0 | No PFAS detected |
| Atkins Water System | AR0000441 | Atkins | 4,439 | <MRL | <MRL | 0 | No PFAS detected |
| Barling Waterworks | AR0000512 | Barling | 5,822 | <MRL | <MRL | 0 | No PFAS detected |
| Barton Lexa Water Association | AR0000415 | Poplar Grove | 3,565 | <MRL | <MRL | 0 | No PFAS detected |
| Batesville Water Utilities | AR0000250 | Batesville | 15,621 | <MRL | <MRL | 0 | No PFAS detected |
| Batts-Lapile Water Association | AR0000622 | Strong | 583 | <MRL | <MRL | 0 | No PFAS detected |
| Beaverfork Pwa | AR0000844 | Conway | 4,220 | <MRL | <MRL | 0 | No PFAS detected |
| Bella Vista Poa | AR0000039 | Bella Vista | 39,419 | <MRL | <MRL | 0 | No PFAS detected |
| Benton County Water District #1 | AR0000037 | Avoca | 6,730 | <MRL | <MRL | 0 | No PFAS detected |
| Benton Waterworks | AR0000484 | Benton | 30,681 | <MRL | <MRL | 0 | No PFAS detected |
| Berryville Waterworks | AR0000074 | Berryville | 6,813 | <MRL | <MRL | 0 | No PFAS detected |
| Blytheville Waterworks | AR0000365 | Blytheville | 12,981 | <MRL | <MRL | 0 | No PFAS detected |
| Booneville Waterworks | AR0000326 | Booneville | 3,847 | <MRL | <MRL | 0 | No PFAS detected |
| Bradley Co Rural Water Association | AR0000054 | Warren | 1,163 | <MRL | <MRL | 0 | No PFAS detected |
| Brinkley Waterworks | AR0000384 | Brinkley | 3,125 | <MRL | <MRL | 0 | No PFAS detected |
| Bryant Waterworks | AR0000486 | Bryant | 19,607 | <MRL | <MRL | 0 | No PFAS detected |
| Buffalo Island Reg Water Dist | AR0000671 | Caraway | 3,055 | <MRL | <MRL | 0 | No PFAS detected |
| Cabot Waterworks | AR0000338 | Cabot | 27,578 | <MRL | <MRL | 0 | No PFAS detected |
| Camden Waterworks | AR0000404 | Camden | 13,275 | <MRL | <MRL | 0 | No PFAS detected |
| Cave Springs Waterworks | AR0000043 | Cave Springs | 5,365 | <MRL | <MRL | 0 | No PFAS detected |
| Cedarville Waterworks Fbcc | AR0000138 | Cedarville | 8,529 | <MRL | <MRL | 0 | No PFAS detected |
| Center Grove Water Association | AR0000213 | Sheridan | 3,858 | <MRL | <MRL | 0 | No PFAS detected |
| Centerton Waterworks | AR0000044 | Centerton | 27,243 | <MRL | <MRL | 0 | No PFAS detected |
| Central Arkansas Water | AR0000465 | Little Rock | 368,455 | <MRL | <MRL | 0 | No PFAS detected |
| Cherokee Village Water Assoc | AR0000521 | Cherokee Village | 4,780 | <MRL | <MRL | 0 | No PFAS detected |
| City Corporation | AR0000446 | Russellville | 29,260 | <MRL | <MRL | 0 | No PFAS detected |
| Clarksville Connected Utilities | AR0000289 | Clarksville | 9,410 | <MRL | <MRL | 0 | No PFAS detected |
| Clay Co Reg Water District | AR0000722 | Mcdougal | 5,633 | <MRL | <MRL | 0 | No PFAS detected |
| Clinton Waterworks | AR0000564 | Clinton | 11,013 | <MRL | <MRL | 0 | No PFAS detected |
| Community Water System | AR0000101 | Greers Ferry | 18,628 | <MRL | <MRL | 0 | No PFAS detected |
| Conway Co Regional Water Dist | AR0000119 | Morrilton | 21,393 | <MRL | <MRL | 0 | No PFAS detected |
| Conway Water System | AR0000189 | Conway | 65,233 | <MRL | <MRL | 0 | No PFAS detected |
| Corning Waterworks | AR0000096 | Corning | 3,388 | <MRL | <MRL | 0 | No PFAS detected |
| Cross County Rural Water Sys | AR0000459 | Hickory Ridge | 8,750 | <MRL | <MRL | 0 | No PFAS detected |
| Crossett Water Commission | AR0000017 | Crossett | 7,900 | <MRL | <MRL | 0 | No PFAS detected |
| Decatur Waterworks | AR0000052 | Decatur | 2,468 | <MRL | <MRL | 0 | No PFAS detected |
| Dequeen Water Work | AR0000520 | Dequeen | 6,105 | <MRL | <MRL | 0 | No PFAS detected |
| Des Arc Waterworks | AR0000449 | Des Arc | 4,245 | <MRL | <MRL | 0 | No PFAS detected |
| Dumas Waterworks | AR0000171 | Dumas | 6,338 | <MRL | <MRL | 0 | No PFAS detected |
| East End Water | AR0000646 | Little Rock | 5,954 | <MRL | <MRL | 0 | No PFAS detected |
| East Johnson Co Water Assn | AR0000772 | Lamar | 5,200 | <MRL | <MRL | 0 | No PFAS detected |
| El Dorado Waterworks | AR0000550 | El Dorado | 17,932 | <MRL | <MRL | 0 | No PFAS detected |
| Elkins Waterworks | AR0000567 | Elkins | 3,905 | <MRL | <MRL | 0 | No PFAS detected |
| Eureka Springs Waterworks | AR0000075 | Eureka Springs | 4,053 | <MRL | <MRL | 0 | No PFAS detected |
| Fayetteville Waterworks | AR0000569 | Fayetteville | 116,398 | <MRL | <MRL | 0 | No PFAS detected |
| Fordyce Water Co | AR0000164 | Fordyce | 3,191 | <MRL | <MRL | 0 | No PFAS detected |
| Forrest City Waterworks | AR0000004 | Forrest City | 9,986 | <MRL | <MRL | 0 | No PFAS detected |
| Fort Smith Water Utilities | AR0000507 | Fort Smith | 86,209 | <MRL | <MRL | 0 | No PFAS detected |
| Four Mile Hill Public Facilities Board | AR0000586 | Searcy | 4,877 | <MRL | <MRL | 0 | No PFAS detected |
| Gentry Waterworks | AR0000048 | Gentry | 8,870 | <MRL | <MRL | 0 | No PFAS detected |
| Grand Prairie Bayou 2 Pwa | AR0000734 | Austin | 13,138 | <MRL | <MRL | 0 | No PFAS detected |
| Grand Prairie Regional Water | AR0000738 | Stuttgart | 16,330 | <MRL | <MRL | 0 | No PFAS detected |
| Gravette Waterworks | AR0000051 | Gravette | 4,900 | <MRL | <MRL | 0 | No PFAS detected |
| Green Forest Waterworks | AR0000077 | Green Forest | 6,265 | <MRL | <MRL | 0 | No PFAS detected |
| Greenbrier Waterworks | AR0000191 | Greenbrier | 12,938 | <MRL | <MRL | 0 | No PFAS detected |
| Greenwood Waterworks | AR0000504 | Greenwood | 9,905 | <MRL | <MRL | 0 | No PFAS detected |
| Guy Waterworks | AR0000192 | Guy | 2,438 | <MRL | <MRL | 0 | No PFAS detected |
| Hamburg Waterworks | AR0000015 | Hamburg | 5,600 | <MRL | <MRL | 0 | No PFAS detected |
| Hardin Water Association | AR0000273 | Pine Bluff | 4,600 | <MRL | <MRL | 0 | No PFAS detected |
| Harrisburg Waterworks | AR0000431 | Harrisburg | 2,824 | <MRL | <MRL | 0 | No PFAS detected |
| Harrison Waterworks | AR0000062 | Harrison | 17,455 | <MRL | <MRL | 0 | No PFAS detected |
| Hartford Waterworks | AR0000506 | Hartford | 725 | <MRL | <MRL | 0 | No PFAS detected |
| Hartman Waterworks | AR0000286 | Hartman | 947 | <MRL | <MRL | 0 | No PFAS detected |
| Haskell Water System | AR0000488 | Haskell | 4,000 | <MRL | <MRL | 0 | No PFAS detected |
| Heber Springs Water System | AR0000104 | Heber Springs | 14,015 | <MRL | <MRL | 0 | No PFAS detected |
| Helena Water Sewer | AR0000419 | Helena | 2,708 | <MRL | <MRL | 0 | No PFAS detected |
| Holiday Island Waterworks | AR0000078 | Holiday Island | 2,446 | <MRL | <MRL | 0 | No PFAS detected |
| Hope Water Light Comm | AR0000230 | Hope | 11,500 | <MRL | <MRL | 0 | No PFAS detected |
| Horsehead Water Association | AR0000617 | Clarksville | 5,792 | <MRL | <MRL | 0 | No PFAS detected |
| Hot Springs Utilities | AR0000209 | Hot Springs | 75,343 | <MRL | <MRL | 0 | No PFAS detected |
| Hot Springs Village Waterworks | AR0000208 | Hot Springs Village | 15,985 | <MRL | <MRL | 0 | No PFAS detected |
| Hwy 63 Water Association | AR0000107 | Rison | 7,187 | <MRL | <MRL | 0 | No PFAS detected |
| Hwy 71 Water District #1 Pwa | AR0000145 | Alma | 6,275 | <MRL | <MRL | 0 | No PFAS detected |
| Jacksonville Waterworks | AR0000466 | Jacksonville | 32,875 | <MRL | <MRL | 0 | No PFAS detected |
| James Fork Regional Water District | AR0000513 | Greenwood | 11,538 | <MRL | <MRL | 0 | No PFAS detected |
| Jonesboro Water System | AR0000124 | Jonesboro | 81,888 | <MRL | <MRL | 0 | No PFAS detected |
| Kimzey Regional Water District | AR0000821 | Malvern | 12,718 | <MRL | <MRL | 0 | No PFAS detected |
| Lavaca Waterworks | AR0000510 | Lavaca | 3,650 | <MRL | <MRL | 0 | No PFAS detected |
| Lawrence Co Reg Water Dist | AR0000688 | Pocahontas | 7,469 | <MRL | <MRL | 0 | No PFAS detected |
| Lee County Water Association | AR0000313 | Marianna | 3,770 | <MRL | <MRL | 0 | No PFAS detected |
| Liberty Utilities | AR0000272 | Pine Bluff | 43,438 | <MRL | <MRL | 0 | No PFAS detected |
| Lincoln Waterworks | AR0000572 | Lincoln | 6,690 | <MRL | <MRL | 0 | No PFAS detected |
| Little Creek Water Association | AR0000214 | Sheridan | 2,561 | <MRL | <MRL | 0 | No PFAS detected |
| Little River Co Rda | AR0000787 | Foreman | 5,268 | <MRL | <MRL | 0 | No PFAS detected |
| Lonoke Waterworks | AR0000343 | Lonoke | 4,277 | <MRL | <MRL | 0 | No PFAS detected |
| Madison Co Water Facilities Bd | AR0000349 | Huntsville | 11,435 | <MRL | <MRL | 0 | No PFAS detected |
| Magnolia Waterworks | AR0000109 | Magnolia | 11,657 | <MRL | <MRL | 0 | No PFAS detected |
| Malvern Waterworks | AR0000237 | Malvern | 14,410 | <MRL | <MRL | 0 | No PFAS detected |
| Manila Waterworks | AR0000378 | Manila | 4,165 | <MRL | <MRL | 0 | No PFAS detected |
| Marianna Waterworks | AR0000310 | Marianna | 3,238 | <MRL | <MRL | 0 | No PFAS detected |
| Marion Waterworks | AR0000152 | Marion | 14,185 | <MRL | <MRL | 0 | No PFAS detected |
| Marvell Waterworks | AR0000421 | Marvell | 1,000 | <MRL | <MRL | 0 | No PFAS detected |
| Mayflower Waterworks | AR0000193 | Mayflower | 7,390 | <MRL | <MRL | 0 | No PFAS detected |
| Mc Crory Waterworks | AR0000599 | Mc Crory | 1,736 | <MRL | <MRL | 0 | No PFAS detected |
| Mc Gehee Waterworks | AR0000170 | Mcgehee | 3,849 | <MRL | <MRL | 0 | No PFAS detected |
| Melbourne Waterworks | AR0000256 | Melbourne | 4,126 | <MRL | <MRL | 0 | No PFAS detected |
| Mena Water Department | AR0000438 | Mena | 5,604 | <MRL | <MRL | 0 | No PFAS detected |
| Mid-Arkansas Utilities P.W.A | AR0000725 | Cabot | 11,745 | <MRL | <MRL | 0 | No PFAS detected |
| Milltown-Washburn Water Users | AR0000773 | Greenwood | 4,325 | <MRL | <MRL | 0 | No PFAS detected |
| Monticello Water Department | AR0000184 | Monticello | 8,442 | <MRL | <MRL | 0 | No PFAS detected |
| Mount Olive Water Association | AR0000668 | Elkins | 6,308 | <MRL | <MRL | 0 | No PFAS detected |
| Mountain Home Waterworks | AR0000025 | Mountain Home | 19,618 | <MRL | <MRL | 0 | No PFAS detected |
| Mountain Top Water Association | AR0000454 | Heber Springs | 9,253 | <MRL | <MRL | 0 | No PFAS detected |
| Mountain View Waterworks | AR0000542 | Mountain View | 6,153 | <MRL | <MRL | 0 | No PFAS detected |
| N Garland Co Reg Water Dist | AR0000867 | Hot Springs | 7,913 | <MRL | <MRL | 0 | No PFAS detected |
| Nashville Rural Water Authority | AR0000805 | Nashville | 7,291 | <MRL | <MRL | 0 | No PFAS detected |
| Ne Yell County Water Assoc | AR0000697 | Dardanelle | 7,198 | <MRL | <MRL | 0 | No PFAS detected |
| Newport Waterworks | AR0000264 | Newport | 6,204 | <MRL | <MRL | 0 | No PFAS detected |
| North East Public Water Auth | AR0000033 | Mountain Home | 4,665 | <MRL | <MRL | 0 | No PFAS detected |
| North White Co Rural Water Pfb | AR0000583 | Judsonia | 5,295 | <MRL | <MRL | 0 | No PFAS detected |
| Osceola Waterworks | AR0000375 | Osceola | 6,053 | <MRL | <MRL | 0 | No PFAS detected |
| Ozark Waterworks | AR0000201 | Ozark | 4,368 | <MRL | <MRL | 0 | No PFAS detected |
| Paragould Municipal Utilities | AR0000222 | Paragould | 31,188 | <MRL | <MRL | 0 | No PFAS detected |
| Paris Waterworks | AR0000328 | Paris | 4,935 | <MRL | <MRL | 0 | No PFAS detected |
| Pea Ridge Waterworks | AR0000053 | Pea Ridge | 12,795 | <MRL | <MRL | 0 | No PFAS detected |
| Piggott Waterworks | AR0000090 | Piggott | 4,620 | <MRL | <MRL | 0 | No PFAS detected |
| Pocahontas Waterworks | AR0000474 | Pocahontas | 7,752 | <MRL | <MRL | 0 | No PFAS detected |
| Pottsville Water Association | AR0000445 | Pottsville | 4,045 | <MRL | <MRL | 0 | No PFAS detected |
| Prairie Grove Waterworks | AR0000573 | Prairie Grove | 9,615 | <MRL | <MRL | 0 | No PFAS detected |
| Prescott Waterworks | AR0000394 | Prescott | 3,000 | <MRL | <MRL | 0 | No PFAS detected |
| Riversouth Rural Water Dist | AR0000674 | Ozark | 4,275 | <MRL | <MRL | 0 | No PFAS detected |
| Rogers Water Utilities | AR0000055 | Rogers | 81,443 | <MRL | <MRL | 0 | No PFAS detected |
| Salem Water Users Llc | AR0000492 | Benton | 22,775 | <MRL | <MRL | 0 | No PFAS detected |
| Salesville Community Water Association | AR0000036 | Salesville | 715 | <MRL | <MRL | 0 | No PFAS detected |
| Sardis Water Association | AR0000493 | Mabelvale | 15,660 | <MRL | <MRL | 0 | No PFAS detected |
| Se White County Water Assoc | AR0000594 | Searcy | 5,018 | <MRL | <MRL | 0 | No PFAS detected |
| Searcy Waterworks | AR0000590 | Searcy | 28,196 | <MRL | <MRL | 0 | No PFAS detected |
| Sevier Co Water Association | AR0000868 | Dequeen | 5,365 | <MRL | <MRL | 0 | No PFAS detected |
| Shannon Hills Water Dept | AR0000800 | Shannon Hills | 4,263 | <MRL | <MRL | 0 | No PFAS detected |
| South Sheridan Water Assoc | AR0000219 | Sheridan | 3,887 | <MRL | <MRL | 0 | No PFAS detected |
| Southside Pub Water Authority | AR0000254 | Batesville | 9,108 | <MRL | <MRL | 0 | No PFAS detected |
| Southwest Water Users Llc | AR0000495 | Benton | 9,573 | <MRL | <MRL | 0 | No PFAS detected |
| Springdale Water Utilities | AR0000575 | Springdale | 100,795 | <MRL | <MRL | 0 | No PFAS detected |
| Stuttgart Waterworks | AR0000013 | Stuttgart | 7,393 | <MRL | <MRL | 0 | No PFAS detected |
| Sw Boone County Water Assoc | AR0000628 | Harrison | 4,558 | <MRL | <MRL | 0 | No PFAS detected |
| Sw White County Water Assn | AR0000185 | Searcy | 12,173 | <MRL | <MRL | 0 | No PFAS detected |
| Texarkana Water Utilities | AR0000360 | Texarkana | 50,815 | <MRL | <MRL | 0 | No PFAS detected |
| Tontitown Waterworks | AR0000566 | Tontitown | 7,355 | <MRL | <MRL | 0 | No PFAS detected |
| Tri-County Water Distbr Dist | AR0000782 | Russelville | 16,084 | <MRL | <MRL | 0 | No PFAS detected |
| Trumann Waterworks | AR0000435 | Trumann | 10,000 | <MRL | <MRL | 0 | No PFAS detected |
| Tuckerman Waterworks | AR0000266 | Tuckerman | 1,817 | <MRL | <MRL | 0 | No PFAS detected |
| Tumbling Shoals Water Assoc | AR0000579 | Tumbling Shoals | 6,608 | <MRL | <MRL | 0 | No PFAS detected |
| Us Air Force Base Little Rock | AR0000690 | Jacksonville | 8,618 | <MRL | <MRL | 0 | No PFAS detected |
| Van Buren County Pwa | AR0000727 | Clinton | 3,500 | <MRL | <MRL | 0 | No PFAS detected |
| Van Buren Waterworks | AR0000142 | Van Buren | 22,725 | <MRL | <MRL | 0 | No PFAS detected |
| Vilonia Waterworks | AR0000195 | Vilonia | 24,690 | <MRL | <MRL | 0 | No PFAS detected |
| Waldron Waterworks | AR0000498 | Waldron | 3,550 | <MRL | <MRL | 0 | No PFAS detected |
| Walnut Ridge Waterworks | AR0000309 | Walnut Ridge | 5,823 | <MRL | <MRL | 0 | No PFAS detected |
| Ward Waterworks | AR0000345 | Ward | 12,579 | <MRL | <MRL | 0 | No PFAS detected |
| Warren Waterworks | AR0000066 | Warren | 6,001 | <MRL | <MRL | 0 | No PFAS detected |
| Washington Water Authority Wwa | AR0000574 | Farmington | 20,140 | <MRL | <MRL | 0 | No PFAS detected |
| Washington Water System | AR0000232 | Hope | 142 | <MRL | <MRL | 0 | No PFAS detected |
| Watson Chapel Water Assoc | AR0000284 | Pine Bluff | 5,590 | <MRL | <MRL | 0 | No PFAS detected |
| West Helena Water Works | AR0000416 | Helena | 5,693 | <MRL | <MRL | 0 | No PFAS detected |
| West Memphis Waterworks | AR0000156 | West Memphis | 24,419 | <MRL | <MRL | 0 | No PFAS detected |
| Western Greene County R W D | AR0000704 | Walcott | 7,095 | <MRL | <MRL | 0 | No PFAS detected |
| Wooster Waterworks | AR0000196 | Wooster | 5,000 | <MRL | <MRL | 0 | No PFAS detected |
| Wynne Waterworks | AR0000163 | Wynne | 8,391 | <MRL | <MRL | 0 | No PFAS detected |
| Yorktown Water Association | AR0000319 | Star City | 7,364 | <MRL | <MRL | 0 | No PFAS detected |
Highest single result for each system; PFOA and PFOS in ppt (ng/L). Entry-point samples, not tap water; screening comparisons, not compliance determinations.