Under-sink Reverse-osmosis
Under-sink Reverse-osmosis | Water Purification | Plumbing | Jonesborough
Imagine turning on your kitchen tap in Jonesborough and tasting water that’s as crisp and refreshing as a mountain spring. HEP’s under-sink reverse-osmosis plumbing quietly strips away up to 99% of dissolved solids, chlorine, lead, and other unwelcome extras, delivering a steady flow of pure flavor straight to your glass. The compact system tucks neatly out of sight, yet its five-stage membrane technology works around the clock, so every pour is a tiny celebration of clean living.
With professional installation from the hometown team you already trust for heating, electrical, and plumbing, you’ll enjoy hassle-free performance, easy filter changes, and the assurance of reliable service just down the road. If you’re ready for a simple, affordable upgrade that elevates cooking, coffee, and everyday hydration, ask HEP about modern water purification that fits right under your sink—then taste the difference every day.
FAQs
What is an under-sink reverse-osmosis (RO) system and how does it work?
An under-sink RO system is a compact, multi-stage water purifier that installs in the base cabinet and delivers purified water through a dedicated faucet on your countertop. Feed water first passes through sediment and carbon pre-filters to remove rust, chlorine, and organic compounds. It is then pushed by household water pressure through a semi-permeable RO membrane that blocks dissolved solids, heavy metals, fluoride, nitrates, and many other contaminants down to 0.0001 microns. A final carbon post-filter polishes the taste before the water is stored in a small pressure tank. When you open the RO faucet, clean water flows from the tank while the rejected impurities are sent down the drain.
Why should I install an RO system in Jonesborough when our municipal water is already treated?
Jonesborough’s public water meets federal safety standards, but many homeowners still notice hardness, chlorine taste, and total dissolved solids (TDS) levels between 150-300 ppm. An RO system lowers TDS to 10-30 ppm, removes up to 99 % of lead, arsenic, PFAS, pesticides, and pharmaceutical residues that pass through conventional treatment, and eliminates chlorine taste and odor entirely. The result is bottled-water quality straight from your tap, ideal for coffee, cooking, ice makers, humidifiers, baby formula, and health-conscious families.
How much space do I need under my sink, and will an RO unit fit with my existing plumbing?
A typical 4-stage RO module measures about 14" H × 5" W × 12" D, and the storage tank is roughly the size of a basketball (9" D × 15" H). Most double-door kitchen and bathroom base cabinets in Jonesborough homes have ample room beside the P-trap and disposal. During a free site visit, our technician checks clearance, disposal orientation, and access to the cold-water line and drain. If space is tight, we can mount the module horizontally, use a low-profile tank, or move the tank to an adjacent cabinet.
What maintenance is required and how often do the RO filters need replacement?
Regular upkeep is simple: 1) Replace the sediment and carbon pre-filters every 6-12 months to protect the membrane from clogging and chlorine degradation. 2) Replace the RO membrane every 2-3 years, depending on water hardness and usage. 3) Sanitize the storage tank annually by flushing it with a food-grade disinfectant (a service included in our maintenance plans). We also recommend changing the post-filter when you change the membrane for optimal taste. All filters twist on/off without tools, and we stock OEM cartridges locally so you never wait for shipping.
How much water and energy does an RO system use; is it wasteful?
Modern under-sink RO units operate on normal line pressure and use no electricity, so energy cost is zero. All RO systems discharge some brine—typically 2-3 gallons of reject water for every gallon of purified water produced. This waste ratio has improved dramatically; older systems often wasted 5-7 gallons. At average Jonesborough water rates (~$0.007/gal), producing 3 gallons of purified drinking water per day costs about $0.06 per month in water and sewer fees—far less than purchasing bottled water. Optional permeate-pump upgrades can cut waste by 50–75 % and increase flow rate.
How long does professional installation take and what does it typically cost in Jonesborough?
A standard installation usually takes 1.5–2 hours. Our licensed plumber drills the countertop or stainless-steel sink for the RO faucet, ties into the cold-water shut-off with a feed adapter, connects the drain saddle to the sink trap, mounts the filter module, and pressure-tests the system. We also include a TDS check and customer tutorial. In Jonesborough, full turnkey installation (system, filters, faucet, and labor) starts at $425 for a 4-stage 50 gpd unit. If you already have a system and need professional hookup, labor alone typically runs $135–$175, depending on countertop drilling requirements.