County · Arkansas
Clark County, Arkansas: drinking water records
This overview covers 9 ZIP codes and 9 community water systems in Clark 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 |
|---|---|---|---|---|---|
| Arkadelphia Waterworks AR0000085 | 11,855 | 120 | 0 | 0 | 1 ppb |
| Okolona Waterworks AR0000089 | 562 | 0 | 0 | 3 | 1 ppb |
| Amity Waterworks AR0000088 | 506 | 0 | 0 | 2 | 1 ppb |
| Gurdon Waterworks AR0000087 | 2,988 | 0 | 0 | 0 | 11.2 ppb |
| Clark County Country Water Facilities AR0000741 | 2,403 | 0 | 0 | 0 | 18 ppb |
| River Valley Water Assn AR0000833 | 1,207 | 0 | 0 | 0 | 2 ppb |
| Alpine Water Association AR0000764 | 750 | 0 | 0 | 0 | 1 ppb |
| Whelen Springs Water Dept AR0000804 | 559 | 0 | 0 | 0 | 1 ppb |
| Caddo Valley Waterworks AR0000515 | 535 | 0 | 0 | 0 | 1 ppb |
ZIP reports in Clark 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.