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Counties → Wisconsin

Green County, Wisconsin

SDWIS compliance plate

Sheet WI045 · Green County 52 sys · 1,393 viol · #1427/3254

VIOL-SEVERE · HEALTH-MID · RANK-MID · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-MID · BOOK-FULL

  • VIOL-SEVERE 71.2% flagged
  • HEALTH-MID 20.9% health
  • RANK-MID #1427/3254
  • PHOTO-FINISH ±0.5 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 100%
  • SYS-MID 52 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Portage County ( -0.5 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Green County ranks #1,427 of 3,254 counties by people served, and #36 of 71 counties in Wisconsin. See methodology · corpus placement.

Green County standing, lower-flagged corpus third

Flagged-system rate 71.2% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 20.9% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #1,427 of 3,254 · #36 of 71 in Wisconsin.

Flagged-rate neighbourhood around Green County

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

0% 20% 40% 60% 80% 100% Bayfield · lowest Portage · near La Crosse · near Milwaukee · highest 52.1% 70.6% 70.7% 71.2% 72% 72% 95.3%

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

Water Systems

System Name Population Violations PFAS
Monroe Waterworks 10,780 35 Clean
Brodhead Waterworks 3,216 8 -
Belleville Waterworks 2,712 12 -
New Glarus Waterworks 2,348 132 -
Brooklyn Waterworks 1,524 58 -
Monticello Waterworks 1,217 5 -
Albany Waterworks 1,018 31 -
Warehouse The 359 0 -
Olins Juda Oasis 320 77 -
Juda Public School 310 16 -
Pleasant View Nursing Home 260 112 -
Adams Lutheran Church 260 33 -
Browntown Waterworks 256 131 -
Washington Reformation Ucc 251 0 -
Sky Vu Drive IN 203 5 -
WI DNR Cadiz Springs West Picnic 200 33 -
Mpg - Browntown Division 200 155 -
Juda Zion Community Church 185 15 -
Baileys Run Winery and Distillery 182 0 -
Sweet Minnihaha Campground Shower Dump Station 152 0 -
Crazy Horse Campground Store & Pond 150 0 -
Martintown Community Church 142 26 -
Klondike Cheese Co 135 8 -
New Glarus - Juda Branch 115 0 -
Potters House Upci 111 19 -
Grande Cheese Company 110 24 -
WI DNR New Glarus Woods 103 30 -
Kingdom Hall of Jehovahs Witnesses 100 16 -
Jordan Lutheran Church 87 0 -
Tugs Bar & Grill 79 0 -
Windy Acres Golf Club 77 0 -
Equity Coop Livestock Sales Assn 72 6 -
Grande Custom Ingredients 64 51 -
Edelweiss Chalet Country Club 59 7 -
Decatur Swiss Cheese Coop 55 84 -
Junction House 55 7 -
Pinnacle Dairies LLC 55 0 -
Twin Grove Stage Stop Inc 52 0 -
Clarno Zion United Methodist 50 23 -
Juda Community Park 50 8 -
Baileys Run Vineyard 48 0 -
Van-Gogh Homes LLC 46 33 -
Crazy Horse Campground 46 42 -
Alphorn Ford Inc 45 96 -
Grace Independent Baptist Church 40 10 -
Monroe Municipal Airport 30 0 -
Hawks Mill Winery 30 4 -
Pleasant View Mennonite Church 27 0 -
Attica Inc 26 20 -
Kiwanis Club Youth Camp 25 15 -

Compare beyond Wisconsin

Lower-flagged peers for Green County

Cross-state counties nearest Green County on flagged-system share (71.2%) and cumulative violation count (1,393). 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.