EPA is proposing to modify this permit. A draft permit is available for review.
Below are EPA's National Pollutant Discharge Elimination System (NPDES) municipal separate storm sewer system (MS4) permit and supporting documents for the City of Caldwell in Idaho.
- Permit number: IDS028118
- Effective date: December 1, 2020
- Permit expires: September 30, 2025
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NPDES Stormwater Permit, City of Caldwell MS4, Idaho, #IDS028118 (PDF)(61 pp, 648 K,
October 19, 2020)
Final stormwater permit.
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NPDES Permit Fact Sheet, City of Caldwell MS4, Idaho, #IDS028118 (PDF)(60 pp, 988 K,
July 2020)
Technical basis for permit.
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Response to Comments on Draft Permit for City of Caldwell MS4, Idaho, #IDS028118 (PDF)(13 pp, 2 MB,
October 2020)
EPA's responses to public comments on the July 2020 draft permit.
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Appendix B1: Stormwater Management Program Template, #IDS028118 (PDF)(25 pp, 982 K)
Optional template for creating or revising Stormwater Management Program (SWMP) document.
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Appendix B2: Annual Report Form, #IDS028118 (PDF)(21 pp, 800 K)
Format for annual report. Due no later than December 1 of each year.