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Counties → Wisconsin

Bayfield County, Wisconsin

SDWIS compliance plate

Sheet WI007 · Bayfield County 190 sys · 4,627 viol · #2320/3254

VIOL-HIGH · HEALTH-LOW · RANK-LOWER · BELOW-PEER · PFAS-CLEAN · SRC-GW · SYS-LARGE · BOOK-FULL

  • VIOL-HIGH 52.1% flagged
  • HEALTH-LOW 11.9% health
  • RANK-LOWER #2320/3254
  • BELOW-PEER 1.0 pp cleaner
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 100%
  • SYS-LARGE 190 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Burnett County (+ 1 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Bayfield County ranks #2,320 of 3,254 counties by people served, and #62 of 71 counties in Wisconsin. See methodology · corpus placement.

Bayfield County standing, lower-flagged corpus third

Flagged-system rate 52.1% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 11.9% 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 #2,320 of 3,254 · #62 of 71 in Wisconsin.

Flagged-rate neighbourhood around Bayfield County

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

0% 20% 40% 60% 80% 100% Bayfield · this county · lowest Ashland · near 52.1% 53.1% 53.2% 54.9% 58% 95.3%

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

Water Systems

System Name Population Violations PFAS
Washburn Waterworks 2,280 44 -
Iron River Sanitary District 600 420 -
Bayfield Waterworks 488 43 -
Port Wing Sanitary District 400 96 -
Drummond Sanitary District 250 360 -
Mount Ashwabay 220 3 -
Grace Baptist Church 102 0 -
Quality Inn of Ashland Lake Superior Lodge 100 31 -
Deep Lake Lodge and Steak House 100 14 -
Delta Lodge 100 16 -
Windsor 100 3 -
Trinity Lutheran Church 100 6 -
Backstage Big Top 100 6 -
U S F S Northern Great Lakes Center 100 34 -
Wilde River Subdivision 100 6 -
Rivers Eatery at Ideal Market 76 5 -
Good Thyme 75 0 -
St Peter and Paul Catholic Church 75 0 -
Mogasheen Resort 70 5 -
Congregational United Church of Christ 70 15 -
Moland Lutheran Church 60 3 -
Lakewood Village Condos Birches and Hemlock 60 0 -
Flieth Ehlers Mercantile 55 0 -
Bayfield Winery 54 0 -
U S N P Apostle Is Meyers Beach Mbw01 52 3 -
Cable Nature Lodge 50 5 -
Faith Lutheran Church 50 5 -
Birch Grove Campground 50 0 -
Buskey Bay Resort 50 3 -
Flying Eagle Resort Campground Well 50 38 -
Flying Eagle Resort Main Lodge 50 42 -
Trauts Resort LLC 50 0 -
Ashland Ford Chrysler 50 866 -
U S F S Two Lakes Cmpgd 6 50 25 -
Apostle Islands Area Campground North 50 25 -
American Legion Post 487 50 0 -
Roys Point Marina 50 0 -
Kirsten Soccer Complex 50 0 -
Home Base at Mt Telemark Village LLC 50 0 -
Waterford on the Bay 45 51 Clean
Top O the Morn Resort 40 4 -
U S N P Apostle Is Little Sand Bay Lsw01 38 0 -
Pjs Cabin Store 35 22 -
Cable Triple G 35 20 -
R Place Cafe 35 45 -
Northern Clearing Inc 33 84 -
Lakewood Village Condos Lakeview 32 18 -
U S F S Namekagon Cmpgd Handpump 30 32 -
Pine Point Lodge 30 0 -
U S F S Namekagon Cmpgd Picnic Area 30 0 -

Compare beyond Wisconsin

Lower-flagged peers for Bayfield County

Cross-state counties nearest Bayfield County on flagged-system share (52.1%) and cumulative violation count (4,627). 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.