Met Council - St Croix Valley WWTP
6163 St. Croix Trail No, Oak Park Heights, MN 55082 · Washington County · Publicly Owned Treatment Works
- Average flow
- 2.44 MGD
- Design flow
- 5.8 MGD
- NPDES permit
- MN0029998
- Effective
- Permit expires
- May 2027
- Population served
- 24,908
- CWNS 2022
Met Council - St Croix Valley WWTP is a publicly owned wastewater treatment works in Oak Park Heights, Washington County, Minnesota treating an average of 2.44 million gallons per day against a permitted design capacity of 5.8 MGD, serving about 24,908 residents. It discharges under NPDES permit MN0029998 (effective), which expires in May 2027, with 0 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Met Council - St Croix Valley WWTP.
Available with a free Klarifi account
See the full treatment train at Met Council - St Croix Valley 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
1 verified contact for Met Council - St Croix Valley WWTP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Met Council - St Croix Valley WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Minnesota
Saint Paul · 15 mi away
164.27 MGD
Cottage Grove · 19 mi away
5.99 MGD
Hastings · 20 mi away
1.42 MGD
Shafer · 24 mi away
—
Eagan · 25 mi away
20.44 MGD
Chisago City · 26 mi away
1.02 MGD
Robbinsdale · 26 mi away
0.66 MGD
Vermillion · 26 mi away
0.02 MGD
Met Council - St Croix Valley 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 March 5, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms