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Edison, NJ Environmental Rules: Stormwater Management (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Trigger threshold
1+ acre disturbed or 1/4-acre impervious
Fine
$2,000 per occurrence
Enforced by
Engineering Department
Adopted
Nov. 10, 2021 (Ord. O.2125-2021)

Summary

Edison Township requires any 'major development', one acre or more of land disturbance, or a quarter acre of new impervious surface, to install stormwater management measures and a maintenance plan.

MAJOR DEVELOPMENT Means an individual "development," as well as multiple developments that individually or collectively result in:

a. The disturbance of one or more acres of land since February 2, 2004;

b. The creation of one-quarter acre or more of "regulated impervious surface" since February 2, 2004; Major development includes all developments that are part of a common plan of development or sale (for example, phased residential development) that collectively or individually meet any one or more of paragraphs a and b above. Projects undertaken by any government agency that otherwise meet the definition of "major development" but which do not require approval under the Municipal Land Use Law, N.J.S.A. 40:55D-1 et seq., are also considered "major development." MINOR DEVELOPMENT Means any residential (one- and two-family homes) or development that results in the creation of new impervious area within a five (5) year period within the limits provided in Table 2.

[Amended 9-14-2022 by Ord. No. O.2151-2022] Table 2 - Minor Development Thresholds Zone Threshold of new impervious area R-B 500 Square feet to 10,890 square feet R-BB 750 Square feet to 10,890 square feet R-A & R-A(PRD) 750 Square feet to 10,890 square feet R-AA 1,000 Square feet to 10,890 square feet All other zones 500 Square feet to 10,890 square feet MOTOR VEHICLE

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4904708; v19 updated 2026-03-25; through 03-25-2026).

Full Breakdown

Any project in Edison Township that disturbs one or more acres of land, or creates one-quarter acre or more of new impervious surface, since February 2004, qualifies as a "major development" under Township Code § 34-8 and must incorporate green infrastructure stormwater management measures, including a maintenance plan, into its site design. The rule reaches non-residential projects and the non-preempted parts of residential site plans, plus any Township-undertaken major development, and layers on top of, not in place of, other required permits and approvals.

Violations & Fines

Violators face a $2,000 fine per occurrence, as determined by the Township Engineering Department, under § 34-8.11.

Frequently Asked Questions

Does this apply to a single-family home addition?
Only if it disturbs an acre or adds a quarter acre of impervious surface; most additions fall under separate Residential Site Improvement Standards instead.
What counts as a 'major development' in Edison?
Any project, alone or combined with related phases, disturbing 1+ acre of land or adding 1/4 acre of impervious surface since Feb. 2, 2004.

Sources & Official References

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