Free in-home water testing and professionally installed filtration, reverse osmosis, and softener systems for Maui homes β from Kihei's hard groundwater to Upcountry chlorine. Honest results, island-wide.
Four quick questions β get your district's water profile, the right fix, and what it typically costs. No email required.
Maui doesn't have one kind of water β it has three. Hard mineral-rich groundwater in Central and South Maui. Soft but chlorinated surface water Upcountry. A mixed system in West Maui rebuilding trust after 2023. We test first, then install the system your water actually calls for.
A carbon tank and pre-filter plumbed in where water enters the house β chlorine taste and odor gone from every tap, shower, and appliance. Mounted in the garage or utility wall, out of the way. The go-to fix for West Maui and Upcountry chlorine complaints.
Whole-house systems β
Resin tank plus brine tank, set next to the water heater it's protecting. The fix for Central and South Maui's hard groundwater β stop scale on fixtures, glassware, and appliances. Salt-free conditioners available where a drain or salt isn't practical.
Softeners & conditioners β
A compact multi-stage system tucked under the kitchen sink, feeding its own dedicated faucet. Removes 90%+ of dissolved solids β bottled-water quality on tap, and it usually pays for itself in canceled bottled water inside a year.
RO drinking water β
Hardness, chlorine, TDS, and pH measured right at your tap with a meter and test panel, results explained on the spot in plain language. Free anywhere on Maui. If your water's fine, we'll tell you exactly that.
About free testing βThese systems can work together, but they do not do the same thing. Your free test is how we recommend the right starting point for your home instead of selling a one-size-fits-all package.
Protects the whole home from hard-water scale.
Improves the water experience at every tap and shower.
Polishes drinking and cooking water at one dedicated tap.
| Zone | Source | Hardness | What Usually Fixes It |
|---|---|---|---|
| Central & South Kahului, Wailuku, Kihei, Paia | Groundwater (Κ»Δͺao aquifer area) | 51β171 mg/L β moderately hard to hard | Softener/conditioner + RO for drinking water |
| Upcountry Kula, Makawao, Pukalani, Haiku | Treated surface water | 17β69 mg/L β soft | Whole-house carbon (chlorine taste/odor) + RO |
| West Maui Lahaina, KΔΚ»anapali, NΔpili | Mixed sources | Moderate | Independent testing, whole-house carbon, RO |
Hardness ranges from Maui Department of Water Supply water quality reporting. Above 75 mg/L as CaCOβ is classified as hard water.
We come to you, anywhere on Maui, and test your tap for hardness, chlorine, TDS, and pH β 15 to 20 minutes, results explained on the spot, no obligation.
You get a recommendation matched to your numbers β sometimes that's a $500 RO tap, sometimes a full system, sometimes "your water's fine, save your money."
If your request is a fit, we connect you with a licensed local service provider. That provider confirms the plan and installs most systems in a single visit β 2 to 5 hours for many homes.
South Maui's hardest water β scale control for homes, condos, and vacation rentals.
Kihei water guide βAquifer groundwater, hard on water heaters β the island's highest-payback softener zone.
Kahului water guide βOlder homes on mineral-rich water β testing and treatment for plantation-era plumbing.
Wailuku water guide βIndependent testing and filtration for a community rebuilding β with respect, never fear.
West Maui water guide βSoft surface water, noticeable chlorine β filtration country, not softener country.
Upcountry water guide βPaia, Haiku, Makawao, Pukalani, MΔΚ»alaea, NΔpili, Kapalua β if you're on Maui, we come to you. Testing is free island-wide.
Call to book your free test βYes β Maui Department of Water Supply water meets all federal and state drinking water standards, and we'll never tell you otherwise. What varies hugely across the island is hardness, chlorine level, and taste. A free test shows what your specific tap delivers.
Under-sink reverse osmosis runs about $500β$1,500 installed. Whole-house carbon filtration runs $2,500β$6,000. Softeners and conditioners run $1,500β$5,000, and combined whole-home systems $5,000β$8,000+. The free water test tells you which β if any β your home actually needs.
Almost everything is done in one visit: reverse osmosis in 2β3 hours, whole-house filtration in 2β4 hours, softeners in 3β5 hours, and full combined systems in about half a day β installed by licensed local professionals.
All of Maui: Kihei, Wailea, Kahului, Wailuku, Lahaina, KΔΚ»anapali, Kula, Makawao, Pukalani, Haiku, Paia and everywhere between. Water testing is free island-wide.
Depends where you live. Central and South Maui (Kihei, Kahului, Wailuku) groundwater runs hard β scale problems point to a softener. Upcountry surface water is soft but chlorinated β that's a carbon filtration job. The free test settles it in fifteen minutes.