Mayer WWTP
15300 County Road 30, Mayer, MN 55360 · Carver County · Publicly Owned Treatment Works
- Average flow
- 0.14 MGD
- Design flow
- 0.44 MGD
- NPDES permit
- MN0021202
- Effective
- Permit expires
- February 2030
- Population served
- 2,453
- CWNS 2022
Mayer WWTP is a publicly owned wastewater treatment works in Mayer, Carver County, Minnesota treating an average of 0.14 million gallons per day against a permitted design capacity of 0.44 MGD, serving about 2,453 residents. It discharges under NPDES permit MN0021202 (effective), which expires in February 2030, with 0 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Mayer WWTP.
Available with a free Klarifi account
See the full treatment train at Mayer WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Mayer WWTP.
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Nearby wastewater treatment plants in Minnesota
New Germany · 2 mi away
—
Lester Prairie · 6 mi away
0.09 MGD
Watertown · 7 mi away
0.33 MGD
Norwood Young America · 8 mi away
—
Winsted · 9 mi away
0.23 MGD
Cologne · 10 mi away
0.16 MGD
Chaska · 11 mi away
0.0024 MGD
Young America Township · 11 mi away
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Mayer 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 26, 2026; facility record last updated November 7, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms