PlainWater

Monongalia County, West Virginia

SDWIS compliance plate

Sheet WV061 · Monongalia County 12 sys · 1,384 viol · #664/3254

VIOL-SEVERE · HEALTH-LOW · RANK-UPPER · PHOTO-FINISH · PFAS-CLEAN · SRC-SW · SYS-SMALL · BOOK-FULL

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 3.8% health
  • RANK-UPPER #664/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-SW SW lead 75%
  • SYS-SMALL 12 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Kanawha County (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Monongalia County ranks #664 of 3,254 counties by people served, and #5 of 55 counties in West Virginia. See methodology · corpus placement.

Monongalia County standing, mid-flagged corpus third

Flagged-system rate 100.0% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 3.8% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #664 of 3,254 · #5 of 55 in West Virginia.

Flagged-rate neighbourhood around Monongalia County

Lowest/highest poles plus in-state counties nearest Monongalia County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% Mercer · lowest Boone · highest Cabell · near Harrison · near 92.3% 100% 100% 100% 100% 100% 100%

Source: EPA SDWIS (county aggregates) As of 2026-05-15

Water Systems

Compare beyond West Virginia

Mid-flagged peers for Monongalia County

Cross-state counties nearest Monongalia County on flagged-system share (100.0%) and cumulative violation count (1,384). 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.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers
Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

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.