
Water Treatment & Softeners in Cambridge, MA
Compare 38 water treatment & softeners contractors near you in Cambridge and surrounding area with an average rating of 4.7/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated July 15, 2026
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Oasys Water, Inc.
18 years onlinePoseidon Water
17½+ years onlineWellness Water Filtration Systems
~6 years onlineAquatek Filtration & Pump Service Inc.
5.018+ years onlineBluedrop Water
5.014+ years onlineBriggs AC Services
5.01 year onlineDesalitech
5.0Emmett Plumbing & Drain
5.01 year onlineH2O Care, Inc
5.026+ years onlineH2O Care, Inc.
5.026+ years onlineLaundry Machines Llc
5.0Project Clean Water
5.0~3 years onlineRoyal Plumber Cambridge
5.0True Health Water Systems
5.08½+ years onlineWater Filtration Services, LLC
5.0~19 years onlinePremier Water Systems, Inc
4.924 years onlineSemper Flow Plumbing
4.92+ years onlineFreiner Company, Inc.
4.829+ years onlineRoto-Rooter Plumbing & Water Cleanup
4.829 years onlineWinters Home Services
4.816½+ years onlineClear Water Pump and Well Service
4.7~15 years onlineHomeWorks Energy
4.718+ years onlinePann Home Services & Remodeling
4.621+ years onlineH Mart Cambridge
4.4~28 years onlineOlde Colony Clean Water Inc | Filtration & Purification
4.415 years onlineTags Hardware
4.4~31 years onlinePill Hardware
4.3~31 years onlinePrimo Water Exchange
1.0~32 years onlineWater Treatment & Softeners in Nearby MA Cities
Other Services in Cambridge
Water Treatment & Softeners in Cambridge, MA
Water treatment and softener installation in Cambridge (Massachusetts) serves an MIT/Harvard-adjacent market: single-family homes throughout Cambridgeport and West Cambridge, modern condos in Kendall Square, research-facility commercial tenants, and apartment complexes. Typical jobs include whole-house softeners, carbon filtration for chlorine taste, reverse-osmosis drinking systems (popular with academic demographics), and commercial research-facility water treatment (specific high-purity requirements for biotech/research). Cambridge's academic commercial base drives specialized treatment demand.
Whole-house softener installs in Cambridge run $2,000-$4,000; RO drinking systems $500-$2,000; commercial research-facility water treatment $25,000-$300,000+. Massachusetts requires a Journeyman or Master Plumber. Cambridge permits apply. MWRA (Massachusetts Water Resources Authority) water runs 5-8 grain — moderate. Softeners recommended. Research facilities often require Type I (18.2 MΩ·cm resistivity) or Type II water for lab applications. Historic-district rules apply in some Cambridge areas.
Frequently Asked Questions
- What's typical for MIT-adjacent research water systems?
- Laboratory water systems supplying Type I (ultrapure) and Type II water to labs require multi-stage RO + UV + polish filtration + continuous monitoring. Full lab-water system $40,000-$200,000+ depending on scale and purity requirements. Annual validation and filter replacement required.
- Do I need a softener in Cambridge?
- Recommended — MWRA water at 5-8 grain drives moderate scaling. Softener installation $1,800-$3,500 extends equipment life. Tankless water heaters particularly benefit.
- Why are RO systems popular in Cambridge?
- Academic and research-demographic clients value high-quality drinking water. Under-sink RO ($500-$1,800) removes 95%+ of impurities. Filter replacement annual.
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NeedInstall helps connect customers with local installation professionals across Cambridge and surrounding communities. Featured contractors have claimed their profile and verified their business information. Listings marked as "Verified Pro" have been confirmed by the business owner.

