Norfolk County does not administer stormwater programs. All Norfolk County towns are EPA MS4 permittees, enforcing stormwater standards under 310 CMR 10.05 (Wetlands) and town stormwater bylaws.
Stormwater management in Norfolk County is municipal, shaped by state and federal rules. All Norfolk County towns are MS4 (Municipal Separate Storm Sewer System) permittees under EPA's 2016 MA MS4 General Permit — requiring local stormwater bylaws, illicit discharge prohibition, and construction runoff controls. MassDEP Stormwater Standards (310 CMR 10.05(6)(k)) apply to work within Wetlands Protection Act jurisdiction (100 ft of wetlands, 200 ft of perennial streams). Typical local rules require stormwater management plans for projects disturbing 1+ acre or adding 1+ acre impervious. Low-impact development (rain gardens, permeable pavers, bioswales) encouraged. Many Norfolk County towns (Brookline, Dedham, Weymouth) have comprehensive stormwater bylaws. Norfolk County's Neponset River, Charles River, and Monatiquot River watersheds face elevated scrutiny.
No county enforcement. Municipal stormwater plan failure: stop-work order, $100-$5,000/day. Illicit discharge under MS4 permit and Clean Water Act: up to $50,000/day federal. MA Wetlands violations: up to $25,000.
Wellesley, MA
Wellesley allows garage conversions to ADUs under Wellesley Zoning Bylaw §5.13 (as amended April 15, 2025 by Article 40.1) consistent with Section 8 of the M...
Wellesley, MA
Wellesley regulates ADUs under Section 5.13 of the Wellesley Zoning Bylaw. At the April 2025 Annual Town Meeting, Wellesley adopted Article 40.1 to amend its...
Wellesley, MA
Wellesley's Building Department exempts one-story sheds/accessory buildings of 100 square feet or less from a building permit, but they must still comply wit...
See how Wellesley's stormwater management rules stack up against other locations.
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