Whole-home water treatment in our service area is an engineering question with a small number of correct answers and a large number of incorrect ones. We size systems to the specific characteristics of your home's water supply — Aquarion-supplied municipal water in Greenwich and Westport, Westchester municipal water in Scarsdale and Rye, and private-well water in Greenwich back-country, Bedford, and parts of Wilton. The right system depends on the source.
For municipal water in the service area we install Kinetico (mid-range), Pentair Pelican (upper-mid), and EcoWater (premium) softening and whole-home filtration systems. For under-sink reverse osmosis we install Aquasana. For UV sterilization on well-water installations we install Viqua. We do not install the major big-box-store brands.
What Greenwich water actually looks like
Aquarion-supplied Greenwich municipal water tests at the upper end of moderately hard — eight to eleven grains per gallon depending on season and supply rotation. Chloramine is present at typical disinfection levels. Sediment intrusion is occasional after heavy rain when the Aquarion treatment plant flushes. The water is safe to drink as delivered. The question for a high-end home is not safety, it is fixture longevity, surface buildup on tile and glass, and the taste-and-feel of the water at point of use.
What we recommend by home size
| Home profile | Typical system | Installed cost range |
|---|---|---|
| 3,000–4,500 sqft, 2–3 baths | Kinetico whole-home softener + sediment pre-filter | $4,400–$6,800 |
| 4,500–7,000 sqft, 4–5 baths | Pentair Pelican softener + carbon filtration + Aquasana under-sink RO | $6,800–$11,800 |
| 7,000+ sqft or well water | EcoWater whole-home + UV (well only) + per-bath RO | Quoted on water-test analysis |
Installed pricing includes by-pass valving for service, a five-year service contract, and an in-line pressure-balance check. Annual service for any installed system is $185 and is bundled into the annual inspection program for clients on that subscription.
Why we don't install big-box brands
The big-box-store brands are engineered to a price point that requires shorter resin lifespans, lower-quality control valves, and a brine-tank design that requires more frequent attention. We see the field failures at the seven-to-nine-year mark consistently — at which point the homeowner has effectively paid for a more expensive system in service calls and replacement. The brands we install carry resin and valve warranties that extend the system's useful life to fifteen-plus years.
Well water is a different question
If your home is on private well — most of Greenwich back-country, the Bedford parcels, parts of upper Wilton — water treatment begins with a lab analysis. We pull water samples, send them to a state-certified lab, and quote against the analysis. The contaminant profile of a Bedford well is different from the profile of a back-country Greenwich well, and the system needed is different. We do not quote well-water treatment without an analysis.
Frequently asked questions
Is Greenwich water hard?
Aquarion-supplied Greenwich municipal water tests at the upper end of moderately hard (8–11 grains per gallon depending on season and supply rotation). For larger homes with high fixture counts and tile/glass surfaces a softener is generally warranted on lifestyle and equipment-longevity grounds, not on health grounds.
Do I need an RO system?
RO is a kitchen-tap question, not a whole-home question. We install Aquasana under-sink RO at the kitchen sink as a standard install for homeowners who want a polished drinking-water output. Whole-home RO is generally not warranted on Aquarion water and would over-engineer the install.
What about well water?
Greenwich back-country, Bedford, and some Wilton parcels are on well. Well water is a separate engineering question that begins with a water test and ends with a system that addresses the specific contaminants in your well. We pull samples, run a lab analysis, and quote against the analysis — never against a brochure.
How often does a softener need service?
Annual inspection and brine-tank maintenance is the standard. Resin replacement is typically a fifteen-plus-year horizon on the brands we install. We include the first year of service in the installation cost and offer an annual service contract at $185/year.
Can you tie water treatment into a whole-home repipe?
Yes — and we generally recommend it. Sequencing water-treatment installation with a repipe lets us place the equipment correctly relative to the new supply lines and saves the homeowner a second mobilization.