Advanced ion-exchange technology removes the calcium and magnesium that cause scale, spots, and dry skin—so your Marathon home gets soft, conditioned water at every tap.
The System Itself
A high-capacity resin tank and built-in brine cabinet, installed where the water enters your home. It runs itself—the electronic valve tracks your actual use and regenerates on demand, so you’re never without soft water and never wasting salt.
Key Features
Sized for a family home in Marathon and engineered to stay out of your way: high grain capacity, a valve that regenerates on demand rather than on a clock, and a high-flow design that keeps your pressure where it should be.
42,000
Grain capacity, up to
1-6
Person households
10 yr
Tank warranty
5 yr
Electronics warranty
Regenerates based on the water you actually used—not on a fixed schedule.
Tracks household usage and adjusts itself to match your pattern.
Calcium and magnesium—the two minerals behind scale and spotting.
Keeps great pressure—ideal for Marathon showers and appliances running together.
Tells you when to top up—before you notice any change in your Marathon water.
Reliable, low-draw operation—easy to keep running in Marathon year-round.
Whole-Home Water Softener
$1,495
Installed
Regularly

Resin tank, brine cabinet, electronic control valve, and all parts included.

Plumbed into your main line and commissioned by professionals—built for life in the Florida Keys.

We test your water and program the valve to your household before we leave—whether you’re on municipal, well, or cistern supply.

No surprises—one straightforward price for Marathon homeowners.

Backed by a 10-year tank and 5-year electronics warranty.

Treated at the source, so your whole Marathon home runs soft.
How It Works
Hard water from your main supply enters the system and leaves as soft, conditioned water. The softener removes hardness minerals—calcium and magnesium—that cause scale, spots, and dry skin, giving you soft, luxurious water throughout your Marathon home.
Why Marathon water hardness matters
Calcium and magnesium are dissolved rock. They do not filter out the way sediment does—they come out of solution as scale on anything warm or wet: the inside of your water heater, the shower glass, the dishwasher element, the faucet aerators. In Marathon, that buildup can be even more frustrating alongside coastal conditions. Ion exchange is the only method that actually takes them out of the water rather than just changing how they behave.
Sits on top of the tank, monitors usage, and regenerates automatically when the resin needs it.
Ion-exchange resin attracts and removes hardness minerals as your Keys water flows through.
Holds salt for automatic regeneration, so the resin is recharged and you always have soft water.
Regenerates on demand, not on a clock
Timer-based softeners regenerate whether you needed it or not—wasting salt and water on a quiet week, and running out mid-cycle on a busy one. This valve meters what the house actually uses and recharges the resin at the right moment—ideal for Marathon homes with fluctuating occupancy.
See & Feel the Difference in Your Marathon Home
Softening is one of the few upgrades you notice without looking for it. The shower feels different, the glassware comes out clear, and the ring around the faucets stops coming back—especially helpful with Marathon’s moderate hardness.
| Around the house | Before - Hard Water | With a Softener After - Soft Water |
|---|---|---|
| Pipes, heater & fixtures | Hard water scale and buildup | No more scale or spots |
| Dishes & faucets | Spots on dishes and faucets | Shiny, like-new fixtures—even in salty Keys air |
| Skin & hair | Rough, dry skin and hair | Softer skin and silkier hair |
| Laundry | Stiff, scratchy laundry | Softer, fluffier laundry |
Swipe the table sideways to compare both columns.
Installed for $1,495 in Marathon - regularly $3,000.
One system, plumbed in at the main line, treating every tap in the house. It is backed by a 10-year tank warranty and a 5-year electronics warranty, and it suits municipal supply or local well/cistern systems common in Marathon homes of one to six people. If you’re not sure how hard your water actually is, we’ll test it as part of the visit.
Why Marathon Homeowners Choose Us
Installed by a Florida plumbing company that’s been doing this a long time—and stands behind the work for Marathon and the Florida Keys.
Built for reliable, long-term performance in the Florida Keys.
Top up the salt when the indicator asks—the valve handles the rest.
We stand behind our products and the quality of service we provide in Marathon.
Join homeowners across Marathon and the Florida Keys who choose Mr. Pure Water.
Ideal For
Warranty
Hardness minerals are removed, so water feels smoother—great for Marathon showers.
Helps maintain natural moisture and leaves skin and hair feeling healthier—even in Marathon’s humid, salty air.
Soap and shampoo lather properly in soft water, so you use noticeably less of both.
The Mr. Pure Water Whole-House Water Softener uses advanced ion-exchange technology to take the calcium and magnesium out of your water before it reaches a single fixture. A high-capacity resin tank - up to 42,000 grains - does the work, while an electronic control valve meters how much water the household actually uses and regenerates on demand rather than on a timer. The built-in brine cabinet keeps the resin recharged, and a low-salt indicator tells you when to top it up. The result is soft, conditioned water at every tap in Marathon: no scale in the water heater, no spots on the glassware, no film on the shower door, and noticeably less soap and detergent to get the same clean.
Whole-House Water Softener in Marathon
$1,495
Installed
Regularly