County · Arkansas
Union County, Arkansas: drinking water records
This overview covers 8 ZIP codes and 24 community water systems in Union County. It also stands in for 0 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| El Dorado Waterworks AR0000550 | 17,932 | 120 | 0 | 5 | 2 ppb |
| Batts-Lapile Water Association AR0000622 | 583 | 60 | 0 | 1 | 4 ppb |
| Wildwood Water Association AR0000562 | 1,350 | 0 | 0 | 1 | 2 ppb |
| Faircrest Water Association AR0000544 | 1,329 | 0 | 0 | 3 | 3 ppb |
| Old Union Public Water Authority AR0000559 | 1,200 | 0 | 0 | 3 | 6 ppb |
| New London Water Association AR0000557 | 850 | 0 | 0 | 23 | 2 ppb |
| Huttig Waterworks AR0000553 | 733 | 0 | 0 | 1 | 2 ppb |
| Junction City Waterworks AR0000552 | 726 | 0 | 0 | 2 | 2 ppb |
| Johnson Township Water Assoc AR0000640 | 600 | 0 | 0 | 6 | 2 ppb |
| Calion Water Works AR0000551 | 494 | 0 | 0 | 1 | 2 ppb |
| Harmony Water Association AR0000546 | 336 | 0 | 0 | 18 | 5 ppb |
| Smackover Waterworks AR0000555 | 2,821 | 0 | 0 | 0 | 4 ppb |
| Parkers Chapel Public Water AR0000560 | 2,391 | 0 | 0 | 0 | 1 ppb |
| New Hope Water Association AR0000683 | 1,136 | 0 | 0 | 0 | 3 ppb |
| Strong Waterworks AR0000556 | 1,131 | 0 | 0 | 0 | 8 ppb |
| Norphlet Waterworks AR0000554 | 1,112 | 0 | 0 | 0 | 2 ppb |
| Lawson-Urbana Water Assoc AR0000548 | 1,108 | 0 | 0 | 0 | 20 ppb |
| Marysville Water Association AR0000001 | 867 | 0 | 0 | 0 | 1 ppb |
| Quinn Water Association AR0000561 | 729 | 0 | 0 | 0 | 2 ppb |
| Wesson-Newell Water Assoc AR0000103 | 658 | 0 | 0 | 0 | 4 ppb |
| Lisbon Water Association AR0000716 | 439 | 0 | 0 | 0 | 4 ppb |
| Mount Holly Waterworks AR0000002 | 384 | 0 | 0 | 0 | 3 ppb |
| Oak Manor Water Association AR0000558 | 338 | 0 | 0 | 0 | 5 ppb |
| Felsenthal Water and Sewer AR0000545 | 150 | 0 | 0 | 0 | 1 ppb |
ZIP reports in Union County
No ZIP report in this county is published yet.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.