Private Wells
In Westford, roughly 40% of properties depend on obtaining water from an on-site, drinking water well. The term "private well" is typically used for a well that provides drinking water for a residence. This private water supply provides water for human consumption and consists of a system that has fewer than fifteen service connections and 1 serves fewer than twenty-five individuals 2 serves an average of twenty-five or more individuals daily for fewer than sixty days of the year. Private wells are regulated by the local Board of Health.
List of Well Installer Companies
Types of Wells
New & Replacement Wells & Water Systems
- Well Installers and Remediation Services List
- Well and Water System Permits
- Westford's Well Water Regulations (PDF)
Well Water Testing & Frequency
Westford's Minimum Testing Requirements for Property Sales
The analysis for potable water wells drilled in bedrock must at minimum include:
- Arsenic
- Chloride
- Coliform Bacteria
- Copper
- Fluoride
- Radon
- Uranium
- Hardness
- Iron
- Lead
- Manganese
- Nitrate/Nitrite
- Perchlorates (See Perchlorate Monitoring Area in the regulation)
- pH
- Sodium
If the Gross Alpha Screen is elevated, a second water sample shall be collected and analyzed for Radon and Uranium. Based on advice from the well driller and/or laboratory, Radon and Uranium can be analyzed in water instead of Gross Alpha.
- MassDEP Certified Laboratories for Drinking Water
- Westford's Well Water Regulations (PDF)
- Perchlorate Map Appendix A
- Perchlorate Disposal Site Boundary Map
State & Federal Recommended Testing Parameters & Frequency
View the results of the Westford Health Department's 2024 PFAS Private Well Sampling Program