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Counties → Minnesota

Cook County, Minnesota

SDWIS compliance plate

Sheet MN031 · Cook County 101 sys · 2,529 viol · #2486/3254

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

  • VIOL-SEVERE 63.4% flagged
  • HEALTH-HIGH 56.9% health
  • RANK-LOWER #2486/3254
  • PHOTO-FINISH ±0.3 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 78%
  • SYS-MID 101 systems
  • BOOK-MOST 6/7 fields

Nearest flagged-rate peer: Martin County (+ 0.3 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Cook County ranks #2,486 of 3,254 counties by people served, and #67 of 87 counties in Minnesota. See methodology · corpus placement.

Cook County standing, lower-flagged corpus third

Flagged-system rate 63.4% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 56.9% is health-based share above the upper third (> 24.5%) . No UCMR5 tests in this extract for Cook County . Population served ranks #2,486 of 3,254 · #67 of 87 in Minnesota.

Flagged-rate neighbourhood around Cook County

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

0% 20% 40% 60% 80% 100% Mahnomen · lowest Swift · near Martin · near Watonwan · highest 22.2% 61.4% 61.9% 63.4% 63.6% 64.3% 100%

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

Water Systems

System Name Population Violations PFAS
Grand Marais 1,344 18 -
Lamb's Resort and Campground 475 28 -
Bluefin Bay 435 40 -
Caribou Highlands Lodge 335 25 -
Ryden's Border Store 200 13 -
Naniboujou Lodge 200 45 -
Moose Mountain Summit Deli 200 7 -
Judge C.R. Magney State Park 200 29 -
AmericInn of Tofte 200 71 -
Gunflint Lodge 180 52 -
Cathedral of the Pines 175 7 -
Superior National Lutsen 170 7 -
YMCA Camp Menogyn 150 33 -
Lutsen Mountains Main Chalet 150 20 -
Chateau LeVeaux 140 0 -
Hungry Jack Lodge 125 36 -
Poplar Haus 100 95 -
Wilderness Canoe Base - The Island 100 108 -
Trail Center Lodge 100 184 -
Temperance River State Park/Upper Cpgrd. 100 57 -
Lutsen Sea Villas 100 23 -
Poplar River Condominiums 100 0 -
Ryden's Gas LLC 100 7 -
Bearskin Lodge 90 90 -
Nor'wester Lodge & Canoe 86 28 -
Lutsen Resort 80 0 -
Cascade Lodge 80 0 -
The Landing at Devil Track Lake 80 126 -
Birch Grove Community Center 75 5 -
Okontoe Fellowship 75 0 -
Sugar Beach Resort 70 7 -
Grand Marais-Cook County Airport 69 0 -
Cliff Dweller 68 221 -
Birchwood Wilderness Camp 65 48 -
Pine Mountain Mobile Home Court 60 6 -
Golden Eagle Lodge 60 12 -
Clearwater Canoe Outfitters 60 31 -
Cliff House Townhomes 60 0 -
Rockwood Lodge & Outfitters 56 29 -
Tuscarora Lodge & Canoe Outfit 50 7 -
Voyageur Canoe Outfitters 50 143 -
Gunflint Pines Resort 50 50 -
Cascade River State Park 50 0 -
Loon's Nest Coffee 50 0 -
Superior Ridge Resort/Motel 45 39 -
Cobblestone Cabins 40 42 -
Lockport Store 40 0 -
Pine Mountain Campground 40 0 -
The Heritage 40 0 -
Ski Hill Cabins 40 0 -

Compare beyond Minnesota

Lower-flagged peers for Cook County

Cross-state counties nearest Cook County on flagged-system share (63.4%) and cumulative violation count (2,529). 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.