Use official lead service-line and tap-water resources
A property record and certified testing are more useful than guessing from age or pipe appearance.
The short answer
Dedham-Westwood Water District publishes a water-service-line inventory project. MassDEP explains that lead at the tap can come from service lines or premise plumbing and provides testing and flushing information. Check the actual address through official channels and follow current public guidance.
What to notice
Do not treat appearance as identification
Pipe color, magnet response, age, or a neighbor’s service line is not a complete property determination. Records can also distinguish public and private portions. Ask DWWD what information is available and what to do if material is unknown. Do not disturb a suspected line to inspect it.
Testing needs the right method
A general home test or visual inspection is not equivalent to analysis by a certified laboratory under an appropriate sampling plan. Follow MassDEP and water-supplier instructions for sample collection, flushing, and interpretation. A plumbing provider can discuss property components but should not replace an official water-quality process with a visual claim.
Plan work around responsibility and records
If replacement or interior plumbing work is considered, clarify ownership, permit needs, licensed work, coordination, temporary water arrangements, and restoration. Ask how the final material and work are documented. A service-line project may involve utility and property scopes that should not be blended into one unsupported promise.
One useful question
Does an unknown service-line record mean the water is unsafe?
An unknown material record is not a water-test result. Contact DWWD and follow MassDEP guidance for current risk-reduction and certified testing steps. This website cannot determine water safety or interpret a property-specific laboratory result.