Nevada Statewide Rule

Nevada NPDES Stormwater Permitting Statewide Standards

Heavy RestrictionsApplies statewide across Nevada (2026)

Nevada Division of Environmental Protection administers federal NPDES stormwater permits statewide under NRS 445A.300, requiring construction sites over one acre and industrial facilities to obtain coverage and implement pollution prevention measures.

Key Facts

Primary statute: NRS 445A.300-.730
Construction threshold: 1+ disturbed acre
Regulator: Nevada DEP
Max state penalty: $25,000 per day
SWPPP required: All construction permits

Source: Nevada Legislature

Full Breakdown

Under NRS 445A.300 through 445A.730 and the Clean Water Act, the Nevada Division of Environmental Protection issues general and individual NPDES permits for stormwater discharges. Construction activities disturbing one or more acres must obtain a Construction General Permit, prepare a Stormwater Pollution Prevention Plan (SWPPP), install best management practices, and conduct routine inspections. Industrial facilities in regulated sectors need a Multi-Sector General Permit. Municipal Separate Storm Sewer Systems (MS4s) in Clark and Washoe counties operate under permits requiring local stormwater ordinances. Local stormwater rules must meet or exceed state and federal minimums and cannot waive permit requirements.

Violations & Penalties

Discharge without a permit can result in civil penalties up to $25,000 per day per violation under NRS 445A.700, plus federal Clean Water Act penalties.

Frequently Asked Questions

Do I need a state stormwater permit for a small home build?

Only if the project disturbs one or more acres of soil. Smaller sites may still need local erosion control approvals and best management practices.

Who enforces stormwater rules in Nevada?

Nevada Division of Environmental Protection issues and enforces NPDES permits, while MS4 cities like Las Vegas and Reno enforce local stormwater ordinances delegated through their permits.

Sources

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Nevada NPDES Stormwater Permitting Statewide Standards

Heavy RestrictionsApplies statewide across Nevada (2026)

Full Breakdown

Frequently Asked Questions

Do I need a state stormwater permit for a small home build?

Only if the project disturbs one or more acres of soil. Smaller sites may still need local erosion control approvals and best management practices.

Who enforces stormwater rules in Nevada?

Nevada Division of Environmental Protection issues and enforces NPDES permits, while MS4 cities like Las Vegas and Reno enforce local stormwater ordinances delegated through their permits.