Harwich Conservation Commission Moves to Tighten Wetland Buffer Fertilizer Rules

HARWICH — February 11, 2026 — Harwich Conservation Commission takes first steps toward rewriting its wetland buffer nutrient rules. At a special February 11 working session, commission members agreed to draft updated language for Section 1.06 of the town's wetlands regulations, replacing a ban on "fertilizers" with broader restrictions on "plant nutrients" as defined under Massachusetts 330 CMR 31 — closing a loophole that has allowed biosolid-based soil amendments to be applied legally within the 100-foot wetland buffer. A commission member presented calculations showing that Super-Pete, a product made from sawdust and municipal biosolids, delivers roughly 21.6 pounds of nitrogen per 1,000 square feet at its recommended application rate, approximately five times the UMass Extension guideline maximum of four pounds. A second member introduced Nantucket's fertilizer management document as a potential model, sparking debate over whether projected nitrogen release rates — rather than total applied amounts — can legally determine compliance with state standards. Conservation staff will compile draft language from up to three members working within open meeting law limits, with future evening public hearings required before any vote on regulatory changes.