ADC Septic

Septic work in Blackstone runs through the Blackstone Board of Health under Title 5 (310 CMR 15.00). A licensed installer, an engineer- or sanitarian-stamped design, and a Board of Health disposal works permit are all required. A perc and soil evaluation sizes any new system. Because the Blackstone River and its wetlands cross town, work near surface water also triggers Conservation Commission review under the Wetlands Protection Act, which can affect leach-field placement on riverside lots.

Blackstone septic costs sit near the statewide norm, with cesspool replacements the dominant job type. A full conventional system replacement commonly runs roughly $20,000–$35,000, and a nitrogen-reducing I/A system, where required near sensitive water, runs $30,000 or more. A Title 5 inspection at sale typically runs a few hundred dollars up to about $1,000, and tank pumping is usually a few hundred. With a 59-year median home age, the most common cost driver here is upgrading an old failed cesspool rather than a hard site.

Massachusetts requires a written contract and a Home Improvement Contractor registration for most residential septic installation & service work; ask for the registration number and check it before paying a deposit.

More on permits, costs, rebates and common questions, plus every other septic installation & service contractor serving the town, on the Septic Services in Blackstone page.