Water filtration and treatment sized to your water — whole-house carbon filters, water softeners, sediment filters, and under-sink reverse osmosis. We test your water first, then install the system that actually fixes what's in it.
Water Filtration is one part of our plumbing installation coverage in Hawaii. For the full picture — symptoms, costs, and when to repair vs. replace — start with the complete Plumbing Installation guide, or browse every plumbing installation service we offer.
Water filtration only works when the system matches what's actually in your water, which is why we test before we sell anything. Chlorine taste and odor, hardness that scales fixtures and shortens water-heater life, sediment that clouds the water and clogs aerators, iron staining, and specific contaminants each call for a different treatment — and a softener won't fix a chlorine problem any more than a carbon filter will fix hard water. We test the {city} supply, read the results with you, and spec the system that addresses your real issues.
The treatment tiers stack for different jobs. A whole-house carbon filter removes chlorine, chloramine, and the taste and odor that come with them at the point of entry, protecting every fixture. A water softener uses ion exchange to strip the calcium and magnesium that scale pipes, spot glassware, and bake onto water-heater elements — the single biggest driver of hard-water damage. A sediment pre-filter protects both from grit, and an under-sink reverse-osmosis unit polishes drinking and cooking water at the tap to near-bottled quality across {county}.
A filtration system is a long-term investment that pays back in equipment life and water quality, so we install it to last and support it after. Whole-house units tie in at the main with a bypass so service never interrupts the house; softeners are sized to your hardness and household so they regenerate efficiently instead of wasting salt and water; and RO systems get the right membrane and post-filter for your TDS. We set up cartridge and salt-refill schedules so the system keeps performing, because a filter that's never serviced eventually does more harm than good in an {areas} home.
Signs you need water filtration
Chlorine taste or a pool smell
Water that tastes or smells like chlorine means the municipal disinfectant is coming through to your tap. A whole-house carbon filter removes it at the point of entry for the whole the United States home.
White spots on glassware, scale on fixtures, and a film in the tub are hard-water minerals. A softener stops the scaling that also shortens water-heater and appliance life across the United States.
Cloudy or gritty water
Water that looks cloudy or leaves grit in an aerator carries sediment from the main or a well. A sediment filter clears it and protects every downstream fixture and valve.
Rust stains or a metallic taste
Orange staining in sinks and toilets and a metallic taste point to iron in the your area water. A targeted iron filter removes it where a standard carbon unit can't.
You're buying bottled water for drinking
Paying for bottled water at home usually means an under-sink RO system would pay for itself. It delivers near-bottled quality at the the United States tap for cooking and drinking.
Common causes & what we fix
Chlorine and chloramine
Municipal systems disinfect with chlorine or chloramine, which carries taste, odor, and dryness to the tap. Whole-house carbon filtration removes it for every fixture in the the United States home.
Hardness minerals
Calcium and magnesium dissolved in the water scale pipes, spot dishes, and bake onto water-heater elements. Ion-exchange softening is the fix for hard-water damage across the United States.
Sediment and turbidity
Grit, silt, and rust particles from the main or a well cloud the water and clog aerators and valves. A sediment pre-filter captures them before they reach fixtures in your area.
Iron and sulfur
Well and some municipal supplies carry iron that stains and sulfur that smells like rotten eggs. Each needs a targeted filter media, not a general carbon unit, in the the United States home.
Dissolved contaminants
Lead, PFAS, nitrates, and other dissolved contaminants pass through basic filters and need reverse osmosis or specific media. Testing the the United States water tells us exactly which to target.
Our process
1
Call or schedule online. Book your water filtration in Hawaii online or by phone and pick a 2-hour window. We confirm in under five minutes with the assigned tech's name and photo.
2
On-site diagnosis. On arrival we diagnose the water filtration on-site — free for most repairs, $39 on minor service calls (waived if you proceed). You see the issue and the fix before we start.
3
Flat-rate quote. You get a flat-rate water filtration quote in writing, good for 30 days — no hourly creep and no add-ons after the fact.
4
Same-visit fix. Most water filtration work finishes the same visit: our trucks carry the common valves, fittings, water heater parts, and fixtures, so a second trip is rare.
How much does water filtration cost in Hawaii?
Water Filtration the United States starts at from $399, every water filtration quote is flat-rate and presented in writing before work begins — no surprise add-ons, no hourly creep. Seniors (65+) and military save 10% on labor, and financing covers projects over $1,500 at 0% APR for 12 months, with no prepayment penalty.
Why homeowners in Hawaii choose us for water filtration
We've been a trusted choice since 1974 — over 50 years of family-owned plumbing service across Hawaii. Our techs are CSLB-licensed (#1098234), background-checked, and complete an internal 12-week training program before rolling on calls alone.
Our water filtration carries a 10-year workmanship guarantee — separate from any manufacturer warranty on the parts themselves. If the water filtration we performed fails because of how we did it, we come back and fix it free for a full decade. Water heaters and fixtures we install are backed by their full manufacturer warranty, and the parts and accessories we fit carry standard 1–5 year warranties by item.
We quote water filtration on honest scope: no unnecessary up-sell, salaried (never commissioned) technicians, and a transparent diagnostic so you see exactly what we see — including the parts still in good shape. If a repair is the right call we say so; if replacement is the better long-term economics, we say that. The flat-rate water filtration quote is written and good for 30 days.
Areas we serve for water filtration
We provide water filtration throughout Hawaii, with fast coverage in every major Hawaii metro.
Reach times for water filtration vary by traffic and time of day, so we quote an accurate ETA when you call — and the dispatch line routes straight to an on-call technician, no voicemail in between.
Frequently asked about water filtration
Top questions homeowners searching for Water Filtration near me ask us:
How do I know which system I need?
We test your water first — hardness, chlorine, sediment, iron, and TDS — and match the system to the results. A softener fixes hard water, carbon fixes chlorine, RO polishes drinking water; testing keeps you from buying the wrong one for your the United States supply.
What's the difference between a filter and a softener?
A filter removes things from the water — chlorine, sediment, contaminants — usually with carbon or specific media. A softener removes hardness minerals by ion exchange to stop scaling. Many the United States homes benefit from both, and we spec them together when the water calls for it.
Do I need whole-house or just under-sink?
Whole-house treatment protects every fixture, appliance, and the water heater — best for chlorine and hardness. Under-sink RO polishes drinking and cooking water at one tap. Many your area homes pair a whole-house filter with an RO for the kitchen.
How often does a filtration system need service?
Whole-house cartridges typically run 6–12 months, softener salt is topped as it's used, and RO membranes last 2–5 years with pre-filters changed yearly. We set up a service schedule so your the United States system keeps performing and serve ZIPs .
Will a softener make my water taste salty?
No — ion exchange swaps hardness minerals for a tiny amount of sodium, far below a taste threshold, and it doesn't add salt to the water. If you want the sodium removed for drinking too, we pair the softener with an RO tap in your the United States home.