County · Mississippi
DeSoto County, Mississippi: drinking water records
This overview covers 8 ZIP codes and 19 community water systems in DeSoto 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 |
|---|---|---|---|---|---|
| City of Hernando MS0170009 | 14,457 | 60 | 0 | 1 | 1.2 ppb |
| Lewisburg Water Association MS0170011 | 9,390 | 120 | 0 | 1 | 1.8 ppb |
| City of Hernando-Jaybird MS0170002 | 6,750 | 60 | 0 | 1 | 1.9 ppb |
| City of Southaven MS0170018 | 56,000 | 240 | 0 | 0 | 0 ppb |
| City of Olive Branch MS0170015 | 54,025 | 360 | 0 | 0 | 0.9 ppb |
| City of Horn Lake MS0170022 | 13,649 | 240 | 0 | 0 | 1.2 ppb |
| Horn Lake Water Association MS0170010 | 12,735 | 120 | 0 | 0 | 0 ppb |
| Walls Water Assn- Lake Forest MS0170043 | 9,298 | 60 | 0 | 0 | 0.7 ppb |
| Nesbit Water Association MS0170014 | 5,988 | 60 | 0 | 0 | 1.1 ppb |
| Eudora Utilities Association MS0170006 | 3,749 | 60 | 0 | 0 | 0.8 ppb |
| Days Water Association MS0170005 | 2,825 | 0 | 0 | 4 | 0.7 ppb |
| City of Hernando - Laughter MS0170050 | 2,521 | 0 | 0 | 1 | 1.5 ppb |
| Lewisburg -Ingrams Mill North MS0170049 | 1,067 | 0 | 0 | 1 | 0.9 ppb |
| Country Haven Mobile Home Park MS0170027 | 829 | 0 | 0 | 1 | 0.6 ppb |
| Walls Water Association MS0170019 | 2,999 | 0 | 0 | 0 | 0.6 ppb |
| Belmont Water Association MS0170001 | 2,719 | 0 | 0 | 0 | 0 ppb |
| City of Horn Lake - Twin Lakes MS0170025 | 1,948 | 0 | 0 | 0 | 7.8 ppb |
| City of Horn Lake - Holly Hills MS0170024 | 729 | 0 | 0 | 0 | 0 ppb |
| Audubon Park Apartments Water System LA1033133 | 534 | 0 | 0 | 0 | 0 ppb |
ZIP reports in DeSoto 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.