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Counties → Wisconsin

Marquette County, Wisconsin

SDWIS compliance plate

Sheet WI077 · Marquette County 155 sys · 2,252 viol · #1891/3254

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

  • VIOL-SEVERE 69.0% flagged
  • HEALTH-LOW 17.7% health
  • RANK-MID #1891/3254
  • PHOTO-FINISH ±0.4 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 100%
  • SYS-LARGE 155 systems
  • BOOK-MOST 6/7 fields

Nearest flagged-rate peer: Pierce County (+ 0.4 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Marquette County ranks #1,891 of 3,254 counties by people served, and #50 of 71 counties in Wisconsin. See methodology · corpus placement.

Marquette County standing, lower-flagged corpus third

Flagged-system rate 69.0% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 17.7% is health-based share in the middle third (≤ 24.5%) . No UCMR5 tests in this extract for Marquette County . Population served ranks #1,891 of 3,254 · #50 of 71 in Wisconsin.

Flagged-rate neighbourhood around Marquette County

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

0% 20% 40% 60% 80% 100% Bayfield · lowest Jefferson · near Pierce · near Milwaukee · highest 52.1% 68.2% 68.6% 69% 69.5% 70% 95.3%

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

Water Systems

System Name Population Violations PFAS
WI DOT Rest Area 81 Southbound 1,400 81 -
WI DOT Rest Area 82 Northbound 1,350 39 -
Montello Waterworks 1,329 35 -
McDonalds Westfield 1,040 71 -
Brakebush Bros Inc 898 14 -
Burger King Westfield 535 103 -
Pioneer Westfield High Sch 500 5 -
St James Cath Ch Hall 401 0 -
St James Cath Ch 401 11 -
Westfield Elementary Sch 350 6 -
Exxon-Mobil Westfield 305 4 -
St Marys Catholic Ch 300 13 -
Immanuel Lutheran Ch 275 3 -
Oxford Elementary 240 5 -
Zion Lutheran Ch 204 19 -
Crooked River Cmpgd Main 200 12 -
Good Shepherd Catholic Ch 200 28 -
Foxtail Gentlemans Club 165 11 -
Foxys 150 28 -
Westfield Super Value 150 8 -
White Lk Beach Supper Club 150 4 -
Oxford Bible Ch 130 5 -
Paradise Pines 115 8 -
Dammas Diner 115 0 -
Crossroads Family Care Center 115 8 -
Lake of the Woods Cmpgd Campsites Only 114 17 -
Pine Lake Camp Wildwood 110 0 -
Pine Lake Camp Rustic Hand Pump 110 9 -
Pine Lake Camp Amphlett Hall 110 0 -
Pine Lake Camp Shower House 110 0 -
Pine Lake Camp Birch Cabins 110 0 -
Mecan River Outfitters & Lodge 105 0 -
Sky Lodge Cc Staff Cabins 100 9 -
Trinity United Methodist Ch 100 22 -
Camp Wakonda Kitchen Shower Bldg 100 30 -
Faith United Methodist Ch 100 20 -
Lake Arrowhead Cmpgd E 100 10 -
Wilderness Cmpgd Ee Area 100 3 -
St Johns Ev Lutheran Ch 100 11 -
Sky Lodge Cc Camper Pk 100 0 -
Sky Lodge Cc Old Cabins 100 19 -
Sky Lodge Cc Main Complex 100 0 -
Thal Acres Links & Lanes 100 11 -
Endeavor Elementary 100 0 -
Sky Lodge Cc Cottonwood 100 0 -
Duck Inn MHP 1 95 245 -
American Legion Post 351 85 0 -
School House Tavern 81 16 -
Rivers Bend Resort Tavern 80 19 -
Jj Rivers Bend Cmpgd 80 30 -

Compare beyond Wisconsin

Lower-flagged peers for Marquette County

Cross-state counties nearest Marquette County on flagged-system share (69.0%) and cumulative violation count (2,252). 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.