8thbendplumbing

508-280-5773

Book Now!
Reverse Osmosis Systems Plymouth MA | 8th Bend Plumbing
Reverse Osmosis Systems · Plymouth, MA & Cape Cod

The Purest Drinking Water Straight From Your Tap.

Reverse osmosis removes up to 99% of dissolved contaminants — heavy metals, nitrates, fluoride, pharmaceuticals, bacteria, and more — delivering better-than-bottled water on demand from a dedicated faucet at your kitchen sink. No more lugging cases of water. No more plastic waste. Just clean, great-tasting water every time you turn on the tap.

Schedule Your RO Installation → 📞 (508) 280-5773
✓
Up to 99% Contaminant Removal
✓
Installed in 2–3 Hours
✓
Licensed Plymouth Plumbers
✓
No More Bottled Water
Reverse osmosis system installed by 8th Bend Plumbing Plymouth MA
99%
Of Dissolved Contaminants Removed
2–3 hrs
Typical Under-Sink Installation Time
$0.01
Per Gallon vs. $1–$3 for Bottled Water
5-Stage
Multi-Stage Filtration Process
What Is Reverse Osmosis?

The Most Thorough Water Purification Available for Your Home.

Reverse osmosis forces water through a semi-permeable membrane with pores so small they block dissolved contaminants that standard filters can't touch. What comes out the other side is water that's been stripped of up to 99% of everything in it — clean, clear, and great tasting.

It's not a new technology — RO has been used in commercial water purification for decades. It works equally well on municipal town water and private well water. Under-sink residential systems bring that same level of purification directly to your kitchen faucet for pennies per gallon.

Goes Far Beyond Standard Filtration
Carbon filters remove chlorine and improve taste. RO removes heavy metals, nitrates, fluoride, pharmaceuticals, bacteria, and dissolved solids that carbon filters simply cannot reach.
Dedicated Faucet at Your Kitchen Sink
The system installs under your sink with a small tank that stores purified water, and a dedicated faucet on your counter or sink for drinking and cooking water.
Pennies Per Gallon vs. Bottled Water
Bottled water costs $1–$3 per gallon. RO water costs roughly a penny per gallon. For a family of four, that's hundreds of dollars saved every year — plus no more plastic waste.
Better Water Changes Everything You Cook
Coffee, tea, pasta, soups — anything made with water tastes noticeably better when chlorine, minerals, and contaminants aren't part of the recipe.
Water filtration system Plymouth MA installed by 8th Bend Plumbing
What Reverse Osmosis Removes

Up to 99% of What's In Your Water — Gone.

RO removes contaminants that no standard filter can touch. Here's what a quality reverse osmosis system eliminates from your drinking water.

Heavy Metals

✓Lead — from aging pipes and solder
✓Arsenic — common in private wells
✓Chromium, Barium, Cadmium
✓Mercury and other trace metals
Health Priority

Chemicals & Disinfectants

✓Chlorine and chloramines
✓Fluoride
✓PFAS / PFOA compounds
✓Volatile organic compounds (VOCs)
Emerging Contaminants

Agricultural Contaminants

✓Nitrates and nitrites — well water risk
✓Pesticides and herbicides
✓Phosphates
✓Agricultural runoff compounds
Well Water Risk

Biological Contaminants

✓Bacteria (including E. coli)
✓Cysts (Giardia, Cryptosporidium)
✓Viruses — with appropriate pre-treatment
✓Parasites and microorganisms
Health Priority

Pharmaceuticals & Other Dissolved Solids

✓Prescription drug traces
✓Hormones
✓Total dissolved solids (TDS)
✓Microplastics
Emerging Research

Hardness & Minerals

✓Calcium and magnesium (hardness)
✓Iron at moderate levels
✓Manganese
✓Sodium added by water softeners
Taste & Quality
How It Works

Five Stages. One Glass of Pure Water.

A quality reverse osmosis system doesn't rely on a single filter — it passes your water through multiple stages, each targeting different contaminants for the most thorough purification possible.

Sediment Pre-Filter
Removes dirt, sand, rust, and large particles that could damage downstream filters and the RO membrane.
Sediment, Particles
Carbon Pre-Filter
Removes chlorine, chloramines, and VOCs that would degrade the RO membrane prematurely.
Chlorine, VOCs
RO Membrane
The core stage — forces water through a semi-permeable membrane that blocks up to 99% of dissolved contaminants.
Heavy Metals, Nitrates, PFAS
Storage Tank
Purified water is stored in a pressurized tank under the sink, ready on demand whenever you turn on the RO faucet.
Purified & Ready
Carbon Post-Filter
A final polishing stage as water leaves the tank — removes any residual taste or odor for the best possible water quality.
Final Polish

Optional 6th stage: Remineralization filter — adds a small amount of beneficial minerals back to the purified water, improving taste and restoring a slightly alkaline pH.

Stop Buying Bottled Water

RO vs. Bottled Water — The Math Is Clear.

Most families buy bottled water because they don't trust what comes out of the tap. A reverse osmosis system delivers water that's purer than most bottled brands — at a fraction of the cost, with none of the plastic waste.

❌ Bottled Water
✅ RO System
$1–$3 per gallon
Cost
~$0.01 per gallon
Plastic bottles, weekly
Waste
Zero plastic waste
Unverified — varies by brand
Purity
Up to 99% contaminant removal
Drive to store, carry cases
Convenience
On demand from your tap
Hundreds per year, ongoing
Annual Cost
Filter replacements only
May contain microplastics
Microplastics
Removed by RO membrane
Water treatment system Plymouth MA 8th Bend Plumbing
Systems We Install

The Right RO System for Your Home.

We recommend and install RO systems based on your water quality, household size, and specific needs — not a one-size-fits-all approach.

Under-Sink Reverse Osmosis

The most common and cost-effective option. Installs neatly under your kitchen sink with a dedicated drinking water faucet on the counter or sink. Provides unlimited purified water for drinking, cooking, and ice — without affecting other water in your home.

Installs Under Sink Dedicated Faucet 2–3 Hour Installation 5-Stage Filtration Storage Tank Included
Most Popular

Whole House Reverse Osmosis

For homeowners who want RO-quality water at every tap — not just the kitchen sink. Whole house RO systems treat all water entering the home, providing purified water for drinking, showering, laundry, and every appliance. Typically recommended for well water homes with significant contamination concerns.

Every Tap Purified Point of Entry Well Water Ideal Highest Protection
Maximum Coverage
The Perfect Combination

RO + Water Softener — Better Together.

Many Plymouth homeowners pair a whole house water softener with an under-sink RO system. Here's why it's the most complete water treatment solution available.

How the System Works Together

Water Enters Your Home
Raw water — whether from municipal supply or your well — enters the main supply line.
Water Softener Treats the Whole House
Hardness minerals are removed before water reaches your water heater, appliances, showers, and fixtures — protecting everything.
RO Stage
RO System Purifies Your Drinking Water
Under the kitchen sink, the RO system removes everything remaining — including the small amount of sodium added by the softener — for the purest possible drinking water.
Pure Water On Demand
Turn on the dedicated RO faucet for drinking and cooking. Every other tap in your home gets softened, scale-free water.

Why This Combination Works So Well

Softener Protects the Whole House
Scale prevention throughout every pipe, appliance, and fixture — extending the life of your water heater, dishwasher, washing machine, and plumbing.
RO Solves the Sodium Question
Salt-based softeners add a small amount of sodium to water. The RO system removes it completely — so you get all the benefits of softened water without sodium in your drinking water.
RO Membrane Lasts Longer
Softened water extends the life of the RO membrane because hardness minerals are the primary cause of membrane fouling. The softener acts as a pre-treatment that makes the RO system more efficient and longer-lasting.
The Most Complete Solution Available
For Plymouth homeowners who want to fully address their water quality — whether on municipal supply or a private well — this combination covers every concern from scale and appliance wear to drinking water purity.
Learn About Water Softeners →
How We Do It

From First Call to Pure Water in One Day.

Most under-sink RO installations are completed in a single visit — usually 2 to 3 hours.

Call or Book Online

Tell us what you're looking for — we'll schedule a visit and answer any questions before we arrive.

Water Assessment

We evaluate your water quality and existing treatment setup to recommend the right RO system and any pre-treatment needed.

Clear Estimate

Itemized estimate before any work begins — system cost, installation, and a complete maintenance schedule so you know exactly what ownership looks like.

Same-Day Installation

We install the system, mount the dedicated faucet, test water quality at the tap, and walk you through filter replacement schedules before we leave. For our full range of water treatment services, see our Water Filtration Services overview.

Common Questions

Reverse Osmosis FAQ

Everything Plymouth homeowners ask us before installing a reverse osmosis system.

A reverse osmosis system removes up to 99% of dissolved contaminants including lead, arsenic, nitrates, fluoride, chlorine, chloramines, pharmaceuticals, bacteria, viruses, PFAS compounds, and many other dissolved solids. It is the most comprehensive point-of-use drinking water purification system available for home use.
Standard water filters — like carbon filters — are effective at removing chlorine, taste, and odor. Reverse osmosis goes much further, forcing water through a semi-permeable membrane that blocks dissolved solids, heavy metals, nitrates, PFAS, and contaminants that carbon filters cannot remove. RO produces significantly purer water than any standard filter — it's simply a different category of treatment.
Most residential RO systems install under the kitchen sink, with a dedicated drinking water faucet mounted on the countertop or sink. The system connects to your cold water supply line and drain. Installation typically takes 2 to 3 hours and requires no major plumbing changes. The storage tank and filter housings are compact and fit neatly in the cabinet below your sink.
Pre-filters and post-filters typically need replacement every 6 to 12 months depending on water quality and usage. The RO membrane itself generally lasts 2 to 5 years. We provide a complete maintenance schedule at installation so you always know when service is due — and we're available to handle replacements when needed.
Traditional RO systems produce some wastewater as part of the process — the rejected contaminants are flushed down the drain along with some water. Modern high-efficiency systems significantly improve this ratio. Given the quality of water produced and the cost savings versus bottled water, most homeowners find the tradeoff completely worth it. We'll walk you through the efficiency specs of any system we recommend.
Yes — and it's actually an excellent combination. A water softener protects your plumbing and appliances throughout the whole house, while an RO system at the kitchen sink removes the small amount of sodium added by the softener along with any remaining contaminants. The softener also extends the life of the RO membrane by removing hardness minerals that would otherwise foul it. If you're on a private well, see our well water filtration page for the complete multi-stage treatment approach we recommend.
Yes. Reverse osmosis removes harmful contaminants while producing clean, great-tasting water. Some people note that RO water tastes slightly flat because minerals are removed along with contaminants. If preferred, we can add a remineralization filter as a final stage that restores a small amount of beneficial minerals and improves taste — giving you the best of both worlds.
Ready for Pure Drinking Water?

Better Than Bottled — Straight From Your Tap.

Stop spending money on bottled water and start drinking water that's purer, tastes better, and comes out of your own kitchen faucet. Most installations are completed same day.

📞 (508) 280-5773
Schedule Your RO Installation → Book Online →

Serving Plymouth · Manomet · The Pinehills · Kingston · Duxbury · Carver · Bourne · Sandwich · Falmouth · Cape Cod