Harrison County, Mississippi
SDWIS compliance plate
Sheet MS047 · Harrison County 52 sys · 15,513 viol · #345/3254
VIOL-SEVERE · HEALTH-LOW · RANK-TOP · PHOTO-FINISH · PFAS-LOW · SRC-GW · SYS-MID · BOOK-FULL
- VIOL-SEVERE 82.7% flagged
- HEALTH-LOW 0.8% health
- RANK-TOP #345/3254
- PHOTO-FINISH ±0.6 pp
- PFAS-LOW 9.1% detect
- SRC-GW GW lead 100%
- SYS-MID 52 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Walthall County (+ 0.6 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Harrison County ranks #345 of 3,254 counties by people served, and #3 of 82 counties in Mississippi. See methodology · corpus placement.
Harrison County standing, lower-flagged corpus third
Flagged-system rate 82.7% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 0.8% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 9.1% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #345 of 3,254 · #3 of 82 in Mississippi.
Flagged-rate neighbourhood around Harrison County
Lowest/highest poles plus in-state counties nearest Harrison County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
Compare beyond Mississippi
Lower-flagged peers for Harrison County
Cross-state counties nearest Harrison County on flagged-system share (82.7%) and cumulative violation count (15,513). 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. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.