Allendale Twp WWTP
11624 40th Avenue, Allendale, MI 49401 · Ottawa County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- —
- NPDES permit
- MI0057679
- Administratively continued
- Permit expires
- October 2025
- Population served
- 17,917
- CWNS 2022
Allendale Twp WWTP is a publicly owned wastewater treatment works in Allendale, Ottawa County, Michigan, serving about 17,917 residents. It discharges under NPDES permit MI0057679 (administratively continued), which expires in October 2025.
Treatment technology
3 treatment structures and unit processes identified at Allendale Twp WWTP.
Available with a free Klarifi account
See the full treatment train at Allendale Twp WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- —
- Effluent violations
- —
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
10 verified contacts for Allendale Twp WWTP, with validated emails and direct phone numbers.
Unlock 10 verified contacts (7 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Allendale Twp WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Michigan
Coopersville · 5 mi away
1.5 MGD
Grandville · 8 mi away
16.16 MGD
Grand Rapids · 9 mi away
42.18 MGD
Conklin · 11 mi away
0.29 MGD
Grand Rapids · 13 mi away
3.74 MGD
Zeeland · 14 mi away
2.29 MGD
Sparta · 15 mi away
0.59 MGD
Holland · 17 mi away
9.47 MGD
Allendale Twp WWTP: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed October 19, 2026; facility record last updated September 11, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms