County · Arkansas
Columbia County, Arkansas: drinking water records
This overview covers 4 ZIP codes and 13 community water systems in Columbia 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 |
|---|---|---|---|---|---|
| Magnolia Waterworks AR0000109 | 11,657 | 240 | 0 | 6 | 2 ppb |
| Lakeside Water Association AR0000822 | 1,876 | 0 | 0 | 29 | 2 ppb |
| Taylor Waterworks AR0000114 | 566 | 0 | 0 | 9 | 2 ppb |
| Walkerville Water Association AR0000639 | 547 | 0 | 0 | 2 | 1 ppb |
| Ward Nine Water System LA1027013 | 465 | 0 | 0 | 7 | 1 ppb |
| Dorcheat Water Association AR0000714 | 1,860 | 0 | 0 | 0 | 2 ppb |
| Waldo Waterworks AR0000112 | 1,630 | 0 | 0 | 0 | 4 ppb |
| Walker Water Association AR0000116 | 1,182 | 0 | 0 | 0 | 2 ppb |
| Emerson Waterworks AR0000111 | 1,145 | 0 | 0 | 0 | 4 ppb |
| Mc Neil Rural Water Assoc AR0000705 | 900 | 0 | 0 | 0 | 1 ppb |
| Mc Neil Waterworks AR0000110 | 515 | 0 | 0 | 0 | 3 ppb |
| Village Water Association AR0000115 | 412 | 0 | 0 | 0 | 2 ppb |
| Lydesdale Water Association AR0000713 | 405 | 0 | 0 | 0 | 2 ppb |
ZIP reports in Columbia 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.