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Counties → Ohio

Allen County, Ohio

SDWIS compliance plate

Sheet OH003 · Allen County 41 sys · 3,083 viol · #621/3254

VIOL-SEVERE · HEALTH-LOW · RANK-TOP · PHOTO-FINISH · PFAS-HIGH · SRC-GW · SYS-MID · BOOK-FULL

  • VIOL-SEVERE 87.8% flagged
  • HEALTH-LOW 17.0% health
  • RANK-TOP #621/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-HIGH 75.0% detect
  • SRC-GW GW lead 88%
  • SYS-MID 41 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Allen County ranks #621 of 3,254 counties by people served, and #25 of 88 counties in Ohio. See methodology · corpus placement.

Allen County standing, lower-flagged corpus third

Flagged-system rate 87.8% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 17.0% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 75.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #621 of 3,254 · #25 of 88 in Ohio.

Flagged-rate neighbourhood around Allen County

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

0% 20% 40% 60% 80% 100% Fayette · lowest Geauga · near Hancock · near Vinton · highest 78.6% 87.4% 87.7% 87.8% 87.8% 88.4% 100%

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

Water Systems

System Name Population Violations PFAS
Lima City 65,619 59 Detected
Delphos City 7,101 165 Clean
Bluffton Village 4,125 196 Detected
Elida Village 3,848 114 Detected
Spencerville Village 2,261 36 -
Odot Rest Area 1-31 Eb 1,000 65 -
Odot Rest Area 1-32 Wb 1,000 34 -
Crossroads Church of God 575 4 -
Mercy St Rita Mc-Systems Abcd & K 501 0 -
Indian Village Mobile Home Park 480 160 -
Sun Valley Family Campground 462 104 -
Ebenezer Mennonite Church 420 30 -
Procter N Gamble Dist Ctr - Lima 360 4 -
Beaverdam Village 319 213 -
Union Chapel Missionary Church 225 34 -
Stites Discount Grocery Store 209 0 -
Dollar General Store - Harrod #21885 204 0 -
Winona Lake Swim N Tennis Club 182 49 -
County Line Church of the Brethren PWS 175 4 -
St John the Baptist Catholic Church 155 287 -
Dairy Haus 150 21 -
Rousculp Church of Christ 112 0 -
Sharon Mennonite Church PWS 100 9 -
The Oaks Golf Club 85 25 -
Carter Lumber Store 65-8 80 5 -
Salem Mennonite Church - Elida 80 116 -
Full Circle Recovery Rehab PWS 76 216 -
Bluffton Golf Club 76 53 -
Colonial Golfers Club 75 38 -
Sandy Point Lake Campground PWS 75 47 -
Elida Mennonite School 66 572 -
Landeck Tavern PWS 65 126 -
Pike Mennonite Church 60 81 -
Sycamore Lake Wine Co 60 4 -
Pleasant View Church of Brethren 50 64 -
Lima Rescue Mission/Camp Roberts 44 36 -
St Matthew Lutheran Church 43 45 -
Morris Chiropractic Clinic PWS 41 5 -
Rush Truck Center of Lima 40 9 -
Robins Nest Campground 38 53 -
Emmanuel United Church of Christ 37 0 -

Compare beyond Ohio

Lower-flagged peers for Allen County

Cross-state counties nearest Allen County on flagged-system share (87.8%) and cumulative violation count (3,083). 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

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

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.