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State Compliance Reference

Idaho SWPPP Compliance

Quick Facts for Idaho

  • Authority: Idaho Dept. of Environmental Quality (DEQ) (ID)
  • Permit: Idaho Construction General Permit (CGP)
  • Inspection Schedule: Every 7 days OR every 14 days and within 24h of a qualifying storm
  • Rain Trigger: 0.25 inches (or snowmelt)
This page is a field reference, not legal advice. Confirm the current permit, local requirements, and project-specific conditions with Idaho Dept. of Environmental Quality (DEQ) before relying on a deadline or inspection schedule.Official sources last reviewed: 2026-09-12

Regulation Overview

Permitting Authority

Idaho Dept. of Environmental Quality (DEQ)

Official Permit

Idaho Construction General Permit (CGP)

Inspection Frequency

Every 7 days OR every 14 days and within 24h of a qualifying storm

Rain Event Trigger

0.25 inches (or snowmelt)
Check Missed Events

Inspection Requirements for Idaho

Construction projects that disturb one or more acres—or smaller sites that are part of a larger common plan—commonly require stormwater permit coverage in Idaho. Eligibility, exemptions, local approvals, and project-specific conditions vary, so confirm coverage under the Idaho Construction General Permit (CGP) before construction begins.

Operational Insight

A 14-day schedule may be paired with an event-driven inspection requirement. Track both the recurring deadline and qualifying weather events so one schedule does not obscure the other.

Specific State Nuance

Idaho DEQ administers permit IDR100000. The current permit term runs through February 9, 2027; daily inspections apply while dewatering discharges occur.

Common BMPs Checked in Idaho

Continue your field review

Check common controls in the BMP field guide, then compare them with your approved SWPPP.

Regulatory Filing

File Notice of Intent (NOI)

Agency Contact

Why Go Digital?

Handwritten logs are hard to read and easy to lose. Digital reports provide a timestamped, geo-tagged audit trail that protects your business.

"The best defense against an EPA audit is a perfect paper trail."