Below are EPA's National Pollutant Discharge Elimination System (NPDES) municipal separate storm sewer system (MS4) final permit and supporting documents for the City of Middleton, Idaho, within the Nampa Urbanized Area.
- Permit number: IDS028100
- Effective date: October 1, 2020
- Permit expires: September 30, 2025
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NPDES Stormwater Permit, City of Middleton MS4, Idaho, #IDS028100 (PDF)(61 pp, 654 K,
September 10, 2020)
Final stormwater permit.
NPDES Permit Fact Sheet, City of Middleton MS4, Idaho, #IDS028100 (PDF)(57 pp, 1 MB,
Technical basis for permit.
Appendix B1: Stormwater Management Program Template, #IDS028100 (PDF)(25 pp, 988 K)
Optional template for creating or revising Stormwater Management Program (SWMP) document.
Appendix B2: Annual Report Form, #IDS028100 (PDF)(21 pp, 766 K)
Format for annual report. Due no later than December 1 of each year.