Edison, NJ Environmental Rules: Stormwater Management (2026)

Edison Township is required by NJDEP to operate a Tier A MS4 stormwater program under the New Jersey Pollutant Discharge Elimination System (NJPDES) General Permit, which sets municipal obligations for public education, illicit-discharge detection, construction-site runoff control, post-construction stormwater management, pollution prevention, and storm-drain inlet labeling. Edison's local stormwater control ordinance, adopted to conform to N.J.A.C. 7:8 and amended in 2021 to require Green Infrastructure as the default approach for major-development BMPs, applies to projects that disturb one or more acres or increase impervious surface by 0.25 acre or more. Project applicants must demonstrate: (1) groundwater-recharge equal to pre-development conditions, (2) no increase in 2-, 10-, and 100-year storm peak flow rates, and (3) 80% TSS removal via Green Infrastructure features such as rain gardens, bioretention basins, dry wells, pervious pavement, and vegetated swales. Routine residential improvements below the major-development threshold are not regulated, though connections to the storm sewer require Township approval. Illicit discharges (oil dumping, sanitary connections, paint disposal) are prohibited under Chapter 12 (Health Code).