Wastewater Treatment Services

Septic in Raynham runs through Title 5 (310 CMR 15.00). The Raynham Board of Health issues the disposal works permit, and a registered sanitarian or professional engineer stamps the design after a witnessed perc and soil test. With extensive wetlands near the Hockomock Swamp and the Taunton and Forge Rivers, Conservation Commission review under the Wetlands Protection Act is common, and high seasonal groundwater frequently forces a raised design with imported fill. A Title 5 inspection is required before most property transfers, which applies to a large share of Raynham sales.

Septic costs in Raynham track the South Shore and SouthCoast norm, below Cape and Boston-metro rates. A conventional system replacement typically runs roughly $20,000–$35,000, climbing when high groundwater near the wetlands forces a raised design with imported fill and a pump. A Title 5 inspection runs a few hundred dollars up to about $1,000, and tank pumping a few hundred. Wetland setbacks and seasonal groundwater across Raynham's flat terrain are the main local cost drivers.

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 Raynham page.