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Counties → Wisconsin

Buffalo County, Wisconsin

SDWIS compliance plate

Sheet WI011 · Buffalo County 70 sys · 1,285 viol · #2453/3254

VIOL-SEVERE · HEALTH-MID · RANK-LOWER · PHOTO-FINISH · PFAS-NONE · SRC-GW · SYS-MID · BOOK-MOST

  • VIOL-SEVERE 75.7% flagged
  • HEALTH-MID 29.2% health
  • RANK-LOWER #2453/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 100%
  • SYS-MID 70 systems
  • BOOK-MOST 6/7 fields

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

According to EPA SDWIS county population served used on /counties, Buffalo County ranks #2,453 of 3,254 counties by people served, and #65 of 71 counties in Wisconsin. See methodology · corpus placement.

Buffalo County standing, lower-flagged corpus third

Flagged-system rate 75.7% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 29.2% is health-based share above the upper third (> 24.5%) . No UCMR5 tests in this extract for Buffalo County . Population served ranks #2,453 of 3,254 · #65 of 71 in Wisconsin.

Flagged-rate neighbourhood around Buffalo County

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

0% 20% 40% 60% 80% 100% Bayfield · lowest Buffalo · this county Price · near Milwaukee · highest 52.1% 75.3% 75.7% 75.7% 76% 76.6% 95.3%

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

Water Systems

System Name Population Violations PFAS
Mondovi Waterworks 2,667 30 -
Alma Waterworks 769 39 -
Cochrane Fountain City School 635 16 -
Cochrane Waterworks 450 16 -
Fountain City Waterworks 443 62 -
Nelson Water & Sewer Dept 375 117 -
Lyster Lutheran Church 370 27 -
Alma Public School 350 37 -
Gilmanton Elementary School 125 13 -
Gilmanton Middle/High School 125 51 -
WI DNR Merrick 7 Shower Bldgs 103 28 -
Sleepy Hollow Campground LLC 100 0 -
Waumandee Country Bar 100 0 -
Valley Golf Club 100 16 -
Lost Pirate Tiki Bar and Grill The 100 14 -
Riverview Park 90 37 -
Hillside Fish House 80 30 -
Nelson Cheese Factory the Original 75 0 -
WI DNR Merrick Entrance Station 75 56 -
Township 23 Distillery 75 0 -
Walkers Silvermoon 63 17 -
St Boniface Parochial School 60 131 -
Grove Golf Course 60 43 -
WI DNR Merrick Island Cmpgd 50 8 -
Great River Harbor 1 50 15 -
River Ratz Saloon 50 6 -
Georges Lounge 50 16 -
Donna Maes Panther Cafe 50 9 -
Drift Inn 40 25 -
Buffalo City Municipal Bldg 31 10 -
Barn Again Lodge LLC 31 3 -
Danzinger Vineyards 30 12 -
Big River Escape Riverside Cabins 30 11 -
Kinstone 30 0 -
Buffalo Community Center 30 0 -
Leebos Bar and Grill LLC 30 43 -
Rainbow Lake Park 30 8 -
Bays End 30 9 -
Brads Roadhouse Bar & Grill 30 26 -
Club Midway 30 6 -
WI DNR Merrick 6 Indian MD 30 16 -
Buffalo City Park 30 18 -
Dancing Yarrow Farm to Fork Retreat 30 32 -
Tell Bar & Grill 30 0 -
Riecks Lake Park 1 30 23 -
Alma Marina 30 5 -
Together Farms LLC 30 0 -
Cross Community Center, Town Of 30 0 -
Islands Edge 30 16 -
Vino Over the Valley & the Lookout 30 5 -

Compare beyond Wisconsin

Lower-flagged peers for Buffalo County

Cross-state counties nearest Buffalo County on flagged-system share (75.7%) and cumulative violation count (1,285). 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.