Big Lake WWTP
18999 County Road 14, Big Lake, MN 55309 · Sherburne County · Publicly Owned Treatment Works
- Average flow
- 0.73 MGD
- Design flow
- 0.84 MGD
- NPDES permit
- MN0041076
- Expired
- Permit expires
- March 2023
- Population served
- 11,686
- CWNS 2022
Big Lake WWTP is a publicly owned wastewater treatment works in Big Lake, Sherburne County, Minnesota treating an average of 0.73 million gallons per day against a permitted design capacity of 0.84 MGD, serving about 11,686 residents. It discharges under NPDES permit MN0041076 (expired), which expires in March 2023, with 0 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in November 2009.
Treatment technology
2 treatment structures and unit processes identified at Big Lake WWTP.
Available with a free Klarifi account
See the full treatment train at Big Lake 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.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Big Lake WWTP in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Penalties assessed
- $468,600
- all cases
- Compliance actions
- $45,648
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Nov 2009
Cellco Partnership dba Verizon Wireless (Corp Audit)
Administrative order · CAA, CWA, EPCRA, Implementation Plan for National Primary and Secondary Ambient Air Quality Standards · Final Order Issued · Penalty $468,600 · Compliance actions $45,648
EPA's description of the case:
“Cellco agreed to self-audit over 20,000 facilities nationwide, and disclosed violations of EPCRA sections 311 and 312, CAA SIPs, and CWA SPCC requirements.”
Source: EPA ECHO, civil enforcement case HQ-2008-8002.
Full case history with a free Klarifi account
Every action against Big Lake WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Big Lake
Big Lake's capital improvement plan lists 11 water, sewer and wastewater line items worth $43M starting 2025–2027. The largest budgeted items are shown here.
All water and sewer capital projects in Big Lake →
| Project | Budget | Years |
|---|---|---|
| WWTP Expansion - Phase II | $40,000,000 | 2027–2027 |
| Water Tower Maintenance | $1,200,000 | 2025–2030 |
| Misc Equipment Replacement Fund | $600,000 | 2025–2030 |
| Well Maintenance | $305,000 | 2025–2030 |
| Replace 1981 Generator #81 | $170,000 | 2026–2026 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
1 verified contact for Big Lake WWTP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Big Lake WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Minnesota
Monticello · 1 mi away
1.04 MGD
Otsego · 5 mi away
0.49 MGD
Albertville · 6 mi away
0.56 MGD
Saint Michael · 8 mi away
1.03 MGD
Becker · 9 mi away
0.9 MGD
Elk River · 9 mi away
1.31 MGD
Rogers · 11 mi away
0.53 MGD
Rogers · 11 mi away
1.16 MGD
Big Lake 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 6, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms