Stormwater Management: Bloomington vs Minneapolis
How do stormwater management rules compare between Bloomington, MN and Minneapolis, MN?
Bloomington has fewer restrictions than Minneapolis.
Bloomington, MN
Hennepin County
Hennepin County requires stormwater management practices on construction and redevelopment sites to protect lakes, rivers, and the Mississippi River watershed under county and watershed district rules.
View full Bloomington rules →Minneapolis, MN
Hennepin County
Minneapolis follows MPCA MS4 permit requirements and Chapter 54 (Stormwater) of the city code. Projects disturbing one acre or more require a state NPDES construction permit, and sites disturbing 10,000 square feet or more must meet city stormwater management rules including infiltration or filtration of the first inch of runoff.
View full Minneapolis rules →Key Facts Comparison
| Fact | Bloomington | Minneapolis |
|---|---|---|
| Permit threshold | 1 acre disturbance | - |
| Lead agency | MPCA plus watershed district | - |
| Treatment standard | First-inch runoff capture | - |
| MS4 permit | Hennepin County roads | - |
| MS4 Community | - | Yes, MPCA permitted |
| Trigger | - | 10,000 sq ft disturbance |
| Retention | - | First 1 inch runoff |
| NPDES Threshold | - | 1 acre disturbance |
| Watershed Districts | - | MWMO, MCWD, BCWMC |
Highlighted rows indicate differences between cities.
Bloomington FAQ
Who reviews stormwater plans in Hennepin County?
The local watershed management organization reviews most plans, with Hennepin County reviewing projects on county right-of-way.
Is infiltration always required?
Most watershed districts require infiltration unless soils, contamination, or wellhead protection make it infeasible, in which case alternative treatment is allowed.
Minneapolis FAQ
Does a home addition trigger stormwater requirements?
Most home additions stay under the 10,000 sq ft disturbance and 5,000 sq ft impervious thresholds. Large additions or new construction on small lots may require a stormwater plan.
Can I direct my gutters to the street?
Minneapolis encourages downspout disconnection to lawns or rain gardens. Direct discharge to the street is allowed but contributes to combined sewer issues the city works to reduce.
Compare other topics
See how Bloomington and Minneapolis compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool