County profile · EPA SDWIS + UCMR5
Marshall County, Mississippi
13 SDWIS-listed public water systems serve 23,916 people in Marshall County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.
- 13
- SDWIS water systems Middle third of counties
- 3,101
- Total violations Upper third of counties
- 92.3%
- SDWIS systems w/ a violation Lower third of counties
- 33.3%
- UCMR5 PFAS rate (3 tested) Middle third of counties with tests
SDWIS compliance plate
Sheet MS093 · Marshall County 13 sys · 3,101 viol · #1615/3254
VIOL-SEVERE · HEALTH-LOW · RANK-MID · PHOTO-FINISH · PFAS-MID · SRC-GW · SYS-SMALL · BOOK-FULL
- VIOL-SEVERE 92.3% flagged
- HEALTH-LOW 1.2% health
- RANK-MID #1615/3254
- PHOTO-FINISH ±0.6 pp
- PFAS-MID 33.3% detect
- SRC-GW GW lead 100%
- SYS-SMALL 13 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Kemper County ( -0.6 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Marshall County ranks #1,615 of 3,254 counties by people served, and #42 of 82 counties in Mississippi. See methodology · corpus placement.
Marshall County standing, lower-flagged corpus third
Flagged-system rate 92.3% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 1.2% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 33.3% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #1,615 of 3,254 · #42 of 82 in Mississippi.
Flagged-rate neighbourhood around Marshall County
Lowest/highest poles plus in-state counties nearest Marshall County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| City of Holly Springs | 9,779 | 253 | Detected |
| Marshall Co Water Assn | 5,599 | 268 | Clean |
| Town of Byhalia | 3,820 | 1,057 | Clean |
| Bcm Water Association | 1,898 | 260 | - |
| Town of Potts Camp | 1,085 | 575 | - |
| H W Byers High School | 608 | 30 | - |
| Dollar General #19963 Hw 309 Byhalia | 300 | 8 | - |
| Dollar General #20281 (Chulahoma) | 250 | 4 | - |
| Waypoint 72 | 200 | 0 | - |
| South Victoria | 143 | 578 | - |
| Galena School | 115 | 14 | - |
| Wall Doxey State Park | 79 | 23 | - |
| Pleasant Petroleum Group LLC | 40 | 31 | - |
Compare beyond Mississippi
Lower-flagged peers for Marshall County
Cross-state counties nearest Marshall County on flagged-system share (92.3%) and cumulative violation count (3,101). In-state neighbours stay on the compliance plate above.
Similar flagged-system rate
Nearest cross-state counties by % of SDWIS systems with at least one violation on record.
Similar violation load
Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).
Read our methodology · Check your water system - how this data is sourced, computed, and verified.
Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.