Milestones
5/9
completed
Statutory Deadline
412 days
April 20, 2027
Subd. 6(b): 18-month EAW deadline
Days in Review
184
since CPP request
Timeline Extensions
0%
0 modified milestones
Project Description
Comprehensive upgrade to the regional wastewater treatment facility serving Mankato and 6 surrounding communities. Project includes new phosphorus removal system, expanded capacity from 12 MGD to 18 MGD, and biosolids processing improvements to meet new Minnesota River nutrient standards.
Applicant
City of Mankato
Estimated Cost
$185,000,000
CPP Requested
September 1, 2025
CPP Prepared
October 28, 2025
County
Blue Earth
Requires EIS
No
Permitting Timetable
Today
EAW Submitted
Sep 25
EAW Deemed Complete
Oct 25
CPP Prepared
Oct 25
Public Comment Period Opens
Jan 26
Public Comment Period Closes
Feb 26
EIS Need Decision
Apr 26
NPDES Permit Application
Jun 26
NPDES Permit Issued
Dec 26
Water Appropriation Permit
Oct 26
Complete
On Track
At Risk
Overdue
Upcoming
Participating Agencies(Subd. 5(a)(1))
MPCAMinnesota Pollution Control Agency
Lead agency for environmental review and air/water permitting
DNRDepartment of Natural Resources
Lead agency for environmental review; water appropriation, mining permits
MDHMinnesota Department of Health
Health impact assessment and drinking water protection
BWSRBoard of Water and Soil Resources
Wetland conservation and soil management
Public Meetings(Subd. 5(a)(2))
EAW CommentJanuary 22, 2026
Mankato Civic Center
Public informational meeting on EAW findings
PermitJuly 15, 2026
Mankato Civic Center
Public hearing on NPDES permit draft
Statutory Notifications
EIS need decision on trackTriggered
All review materials complete. Decision expected by April 15 target.
Mar 15, 2026Subd. 6(b)
Quarterly update duePending
Q2 2026 quarterly CPP update due by June 30, 2026.
Jun 15, 2026Subd. 5(b)
Documents
Environmental Assessment Worksheet
MPCA · Sep 1, 2025
Coordinated Project Plan
MPCA · Oct 28, 2025
Public Comment Summary (42 comments)
MPCA · Mar 1, 2026
Nutrient Loading Analysis
MPCA · Dec 15, 2025
NPDES Permit Application
MPCA · Jun 1, 2026
Permitting Milestones
EAW SubmittedComplete
MPCA · Completed Sep 1, 2025
EAW Deemed CompleteComplete
MPCA · Completed Oct 20, 2025
CPP PreparedComplete
MPCA · Completed Oct 28, 2025
Public Comment Period OpensComplete
MPCA · Completed Jan 15, 2026
Public Comment Period ClosesComplete
MPCA · Completed Feb 14, 2026
EIS Need DecisionOn Track
MPCA · Target: Apr 15, 2026
NPDES Permit ApplicationUpcoming
MPCA · Target: Jun 1, 2026
NPDES Permit IssuedUpcoming
MPCA · Target: Dec 1, 2026
Water Appropriation PermitUpcoming
DNR · Target: Oct 1, 2026
Quarterly Updates(Subd. 5(b))
Q4 2025December 31, 2025
CPP prepared ahead of schedule. EAW under review. All participating agencies confirmed roles and timelines.
Q1 2026March 31, 2026
Public comment period completed. 42 comments received, primarily focused on downstream water quality impacts. EIS need decision on track for April.