PlainWater

Henry County, Missouri

SDWIS compliance plate

Sheet MO083 · Henry County 13 sys · 728 viol · #1640/3254

VIOL-SEVERE · HEALTH-HIGH · RANK-MID · PHOTO-FINISH · PFAS-HIGH · SRC-SW · SYS-SMALL · BOOK-FULL

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-HIGH 45.3% health
  • RANK-MID #1640/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-HIGH 100.0% detect
  • SRC-SW SW lead 77%
  • SYS-SMALL 13 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Henry County ranks #1,640 of 3,254 counties by people served, and #41 of 115 counties in Missouri. See methodology · corpus placement.

Henry 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 45.3% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 100.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #1,640 of 3,254 · #41 of 115 in Missouri.

Flagged-rate neighbourhood around Henry County

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

0% 20% 40% 60% 80% 100% Shannon · lowest Mercer · highest Jackson · near Boone · near 69.6% 100% 100% 100% 100% 100% 100%

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

Water Systems

System Name Population Violations PFAS
Henry County Water Company 11,373 37 Detected
Henry County PWSD 3 2,993 25 -
Windsor PWS 2,900 91 -
Harry S Truman PWSD 2 2,700 46 -
Henry County PWSD 4 1,140 58 -
Urich PWS 505 49 -
Deepwater PWS 433 61 -
Montrose PWS 384 76 -
Calhoun PWS 324 40 -
Henry County PWSD 1 258 34 -
Hickory Hollow Resort 200 32 -
Blairstown PWS 123 130 -
Oakwood Water Assn 28 49 -

Compare beyond Missouri

Mid-flagged peers for Henry County

Cross-state counties nearest Henry County on flagged-system share (100.0%) and cumulative violation count (728). 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.