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New Jersey Statewide Rule

New Jersey Stormwater Management Rules Statewide Standards

Heavy RestrictionsApplies statewide across New Jersey (2026)

Key Facts

Code
N.J.A.C. 7:8
Regulator
NJ DEP
Permit framework
NJPDES MS4
Triggers at
Major development
Last verified: September 5, 2026Source: Justia Law

Summary

New Jersey Stormwater Management Rules at N.J.A.C. 7:8 set uniform statewide design and water-quality standards that municipalities must adopt by ordinance, preventing cities from weakening these baseline requirements.

40:55D-93. Preparation; storm water control ordinances to implement; date of completion; reexamination Every municipality in the State shall prepare a storm water management plan and a storm water control ordinance or ordinances to implement said plan. Such a storm water management plan shall be completed within 1 year from the date of promulgation of comprehensive storm water management regulations by the Commissioner of the Department of Environmental Protection, or by the next reexamination of the master plan required pursuant to section 76 of P.L.1975, c. 291 (C. 40:55D-89), whichever shall be later, provided that a grant for the preparation of the plan has been made available pursuant to section 6 hereof. The plan shall be reexamined at each subsequent scheduled reexamination of the master plan pursuant thereto. Such a storm water control ordinance or ordinances shall be adopted within 1 year of the completion of the storm water management plan and shall be revised thereafter as needed.

Full Breakdown

Under the Stormwater Management Act and N.J.A.C. 7:8, the Department of Environmental Protection sets uniform standards for major development, including groundwater recharge, runoff quantity, and water-quality treatment. Every NJ municipality must adopt a model stormwater control ordinance and a Municipal Stormwater Pollution Prevention Plan as conditions of its NJPDES Tier A or Tier B MS4 permit. Local rules can be more protective but cannot fall below state minimums for green infrastructure and pollutant removal.

Violations & Penalties

Failure to comply can result in DEP penalties, NJPDES permit enforcement, project stop-work orders, and required retrofits.

Frequently Asked Questions

What counts as major development for NJ stormwater rules?
Generally any project disturbing one acre or creating one-quarter acre of new impervious surface triggers full stormwater management standards under N.J.A.C. 7:8.
Can my town opt out of state stormwater standards?
No. Every municipality must adopt a stormwater ordinance meeting state minimums to keep its NJPDES MS4 permit; local rules can only be stricter.

Sources

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