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Counties → Michigan

Allegan County, Michigan

SDWIS compliance plate

Sheet MI005 · Allegan County 318 sys · 5,441 viol · #532/3254

VIOL-SEVERE · HEALTH-LOW · RANK-TOP · PHOTO-FINISH · PFAS-LOW · SRC-GW · SYS-LARGE · BOOK-FULL

  • VIOL-SEVERE 87.4% flagged
  • HEALTH-LOW 14.3% health
  • RANK-TOP #532/3254
  • PHOTO-FINISH ±0.1 pp
  • PFAS-LOW 20.0% detect
  • SRC-GW GW lead 100%
  • SYS-LARGE 318 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Manistee County ( -0.1 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Allegan County ranks #532 of 3,254 counties by people served, and #17 of 83 counties in Michigan. See methodology · corpus placement.

Allegan County standing, lower-flagged corpus third

Flagged-system rate 87.4% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 14.3% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 20.0% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #532 of 3,254 · #17 of 83 in Michigan.

Flagged-rate neighbourhood around Allegan County

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

0% 20% 40% 60% 80% 100% Oscoda · lowest Grand Traverse · near Manistee · near Menominee · highest 52.9% 86.6% 87.2% 87.4% 87.4% 87.8% 100%

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

Water Systems

System Name Population Violations PFAS
Allegan 5,930 18 Clean
Kalamazoo Lake Sewer & Water Authority 5,000 102 Clean
Wayland 4,435 25 Clean
Otsego 4,120 3 Detected
Plainwell 3,998 9 Clean
Bittersweet Ski Resort Inc 3,500 7 -
Laketown Township 3,200 0 -
Sandy Pines Wilderness Trls #1 2,500 2 -
Fennville 2,438 18 -
US 131 Motorsports Park 2,000 44 -
Mdot - Saugatuck, R727 1,800 3 -
Mdot - Glenn, R726 1,800 8 -
Jbs Packerland 1,500 91 -
Lake Doster 1,492 26 -
Otsego Township 1,133 12 -
Sandy Pines Wilderness Trls #4 1,000 3 -
Speedway 1,000 85 -
Camp Beechpoint 1,000 3 -
Camp Beechpoint, Inc. 1,000 0 -
Hamilton High School Pool 1,000 5 -
Camp Beechpoint 1,000 0 -
Hamilton Middle School 900 6 -
J & H Oil Co - Hamilton 900 24 -
Hamilton Middle School 900 5 -
Dorr Moose Lodge 900 30 -
Sun Retreats Gun Lake 900 13 -
Sun Retreats Gun Lake 900 0 -
Hamilton High School 875 0 -
Dorr Elementary 800 61 -
Martin Marathon 800 13 -
Tri-Ponds Family Camp Resort 800 9 -
Burnips Marathon 800 0 -
Tri-Ponds Family Camp Resort (Seasonal) 799 0 -
Martin 785 29 -
Sandy Pines Wilderness Trls #3 762 4 -
J & H Oil Co - Otsego West End Mobil Mar 750 3 -
Hunters Glen 700 1 -
Doster Country Store 700 51 -
Jensen's RV Park 700 25 -
M-89 Shell 700 17 -
Hopkins High School 600 3 -
Cd Quik Mart 600 0 -
North Pointe Church 600 6 -
Paris Ridge Elementary School 550 0 -
Otsego Moose- Campground 500 19 -
Town & Country Supermarket - Gun Lake 500 11 -
Short Stop 500 21 -
Crane's Pie Pantry Restaurant 500 10 -
Otsego Moose Lodge 345 500 17 -
Oval Beach Concession Stand 500 23 -

Compare beyond Michigan

Lower-flagged peers for Allegan County

Cross-state counties nearest Allegan County on flagged-system share (87.4%) and cumulative violation count (5,441). 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.