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Counties → Ohio

Richland County, Ohio

SDWIS compliance plate

Sheet OH139 · Richland County 121 sys · 6,673 viol · #556/3254

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

  • VIOL-SEVERE 89.3% flagged
  • HEALTH-LOW 13.7% health
  • RANK-TOP #556/3254
  • PHOTO-FINISH ±0.1 pp
  • PFAS-LOW 20.0% detect
  • SRC-GW GW lead 98%
  • SYS-LARGE 121 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Fairfield County (+ 0.1 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Richland County ranks #556 of 3,254 counties by people served, and #22 of 88 counties in Ohio. See methodology · corpus placement.

Richland County standing, lower-flagged corpus third

Flagged-system rate 89.3% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 13.7% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 20.0% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #556 of 3,254 · #22 of 88 in Ohio.

Flagged-rate neighbourhood around Richland County

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

0% 20% 40% 60% 80% 100% Fayette · lowest Richland · this county Carroll · near Vinton · highest 78.6% 89.1% 89.3% 89.3% 89.5% 89.5% 100%

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

Water Systems

System Name Population Violations PFAS
Mansfield City 51,000 84 Clean
Shelby City 9,453 189 Detected
Ontario City 6,656 67 Clean
Lexington Village 4,320 162 Clean
Madison Water District 2,050 0 -
Bellville Village 1,918 26 -
Plymouth Village 1,874 38 -
7-Eleven Store # 36177 1,650 15 -
Crestview Local Schools 1,400 74 -
Clear Fork High School 1,178 6 -
Eastview Community Water Association 1,100 12 -
Butler Village 940 36 -
Mansfield Fuel and Food 840 7 -
Aqua Ohio - Mansfield System #01 813 23 -
Aqua Ohio - Mansfield System #07 766 10 -
Madison South Elementary 675 11 -
Lucas Village 620 23 -
Shiloh Village 619 105 -
Aqua Ohio - Mansfield System #02 588 52 -
Walnut Hills Water Association 583 17 -
Crestwood Hills C and R Association 564 2 -
Aqua Ohio - Mansfield System #03 525 60 -
Heatherwood Terrace Townhouses 435 53 -
Dollar General Store - Mansfield #324 415 61 -
Aqua Ohio - Mansfield System #06 412 9 -
Sacred Heart School 398 170 -
Mifflin Elementary School 352 37 -
Ontario Christian Fellowship 350 0 -
Impact Worship Center Mansfield 335 0 -
Clearfork MHP 318 80 -
Expressview Comm Water Association 300 113 -
Odot Rest Area 3-34 West 300 0 -
Journey Life Center Church & College 285 54 -
Aqua Ohio - Mansfield System #11 280 107 -
Odot Rest Area 3-33 East 275 0 -
Diamond Hill Cathedral Church 265 4 -
Shelly Acres Water Association 254 104 -
Snow Trails No 1 - Rental 235 21 -
Hidden Hollow Camp 232 0 -
Odnr - Malabar Farm State Park Inn 230 19 -
Lexview Allotment 225 98 -
Butler Mohican KOA Campground 213 94 -
Oakwood Crossing MHP 200 103 -
Willow Park Water Association 200 57 -
Mifflin Care Center 200 56 -
Dollar General Store - Greenwich #21824 194 4 -
Colonial Hills MHP 185 321 -
Odnr - Malabar Farm State Park Big House 180 11 -
Heatherwood Community Water Association 177 173 -
Church of God - Shelby 175 11 -

Compare beyond Ohio

Lower-flagged peers for Richland County

Cross-state counties nearest Richland County on flagged-system share (89.3%) and cumulative violation count (6,673). 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.