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Water Filtration in Boston & Suffolk County

Every home in Suffolk County drinks MWRA water. That makes the correct system here unusually predictable — and it is almost never a softener.

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Typical water profile

Suffolk County
  • Hardness~1 grain per gallon

    MWRA supply runs about 16 mg/L — exceptionally soft. A softener is almost never the right call here.

  • DisinfectantMonochloramine

    Needs catalytic carbon and real contact time. Standard carbon filters will not remove it.

  • Lead riskIn-building, not source

    MWRA water is essentially lead free at the reservoir. Risk is the service line and your own plumbing.

Usual starting point hereWhole-home catalytic carbon plus under-sink reverse osmosis

Confirmed against your own test results before anything is quoted.

Local detail

What we see in Suffolk County

  • MWRA treats with ozone, UV and chloramine, and adds soda ash and CO2 to raise pH and reduce corrosivity — lead levels are down sharply since the 1990s.
  • The housing stock is the variable. A 1900s triple-decker and a 2018 build drink the same water from the street and deliver very different water to the tap.
  • Boston has run a free lead service line replacement programme — check your eligibility before spending anything on treatment.

These are patterns across the area, not a reading from your property. Bedrock, well depth and your own plumbing all move the numbers house to house.

Towns we cover

Suffolk County communities we serve

Not on the list? We very likely still cover you — call and ask.

  • Boston
  • Chelsea
  • Revere
  • Winthrop
  • Dorchester
  • Roxbury
  • Jamaica Plain
  • South Boston
  • Charlestown
  • East Boston
  • Brighton
  • Allston
  • Hyde Park
  • Roslindale
  • West Roxbury
  • Mattapan

Services in Suffolk County

Other areas

Free in-home water test

Free water test across Suffolk County

The in-home test is free, takes about 45 minutes, and ends with a written report — including the parts where the answer is that you don't need anything from us.

  • Hardness in grains per gallon, pH, chlorine or chloramine, iron and TDS — measured at your tap.
  • PFAS, arsenic, radon and bacteria through a MassDEP-certified laboratory, quoted before any sample is taken.
  • Every number read against its standard, in writing, with no obligation.
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No obligation and no sales pitch on the phone. We'll confirm a time by text or email, usually the same day. Prefer to talk now? Call (508) 686-1582.

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