A water system only works if someone maintains it.

Water Treatment Service & Maintenance Across Kansas City

Annual filter changes, salt refills, system tune-ups, and sanitization for any whole-home filter, softener, or RO we install — and most systems we didn't. Keep your water clean for the life of the unit.

Call (816) 298-0839Book Free Water Test

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Monthly financing through Klarna issued by WebBank, member FDIC. Subject to credit approval. Other CA resident loans made or arranged pursuant to a California Financing Law license. NMLS # 1353190.

What it is

What Service & Maintenance does for your home

A water treatment system isn't install-and-forget. Filters load up, resin exhausts, membranes foul, and valves drift out of calibration — and the water quality quietly slips. Our service and maintenance plan keeps every system we install running at peak, and we service most major brands we didn't put in too. Annual filter changes, salt refills, system tune-ups, and sanitization on a set schedule, done by the same licensed, insured KC technicians who installed it.

The signs

Signs your home needs Service & Maintenance

If any of these sound familiar, a free in-home water test will tell you whether this is the fix.

  • Your softener ran out of salt and now the scale is back
  • Filters past their service life that let chlorine and sediment through again
  • A control valve that's drifted out of calibration, regenerating too often or not enough
  • An RO membrane that's fouled and your drinking water tastes flat again
  • A system from another company whose installer vanished after the sale

How it works

Our Service & Maintenance process

Four steps from free test to lifetime-backed system — no pressure, no surprises.

  1. 1

    System inspection

    We check flow rate, pressure, valve cycles, salt level, and media condition, then test the output water against your system's spec to see what's drifted.

  2. 2

    Filter & media service

    We swap spent carbon and sediment filters, refresh or replace exhausted resin, and replace RO pre/post-filters and membranes on their schedule.

  3. 3

    Tune-up & sanitization

    We recalibrate the control valve, sanitize the brine tank and resin bed, and flush the system so your water runs clean from the first gallon after service.

  4. 4

    Service report

    You get a written report of what we found, what we changed, and when your next service is due — so it's never a surprise.

American-made parts

What goes into a Cathcart system

Every system is built with American-made components — control valves from Wisconsin, tanks from Ohio, resin from New Jersey, and carbon from Ohio.

OEM-spec replacement filters

We stock carbon blocks, sediment filters, and RO membranes that meet or exceed the original system's spec — no generic substitutes that underperform.

Softener salt & resin

Clean, high-purity softener salt delivered to your brine tank, plus ResinTech replacement resin when a bed is exhausted beyond recharge.

Valve & parts calibration

Genuine Hanskraft and Enpress parts for the systems we install, so a tune-up restores factory performance rather than a patch job.

Control Valve — Hanskraft (Wisconsin) · Tank — Enpress LLC (Ohio) · Carbon — Jacobi Group (Ohio) · Resin — ResinTech (New Jersey)

Is this you?

When to call us about Service & Maintenance

  • Your softener's brine tank is empty and you keep forgetting to refill it
  • Chlorine taste or smell is creeping back into your water
  • Your water pressure has dropped since the system was installed
  • The control valve regenerates at odd hours or runs constantly
  • It's been over a year since anyone looked at your system
  • Your system came with the house and you've never had it serviced

Pricing, honestly

No surprises, no high-pressure sales

Service is billed per visit or bundled into an annual plan — we'll quote both after inspecting your system so you can choose. There's no charge to tell you what your system needs, and we service most major brands even if we didn't install it. If a part is covered under our lifetime or 5-year warranty, that repair is on us. Transparent pricing, no surprise add-ons.

Ready for cleaner water?

Free quotes over the phone. Same-week installation across the Kansas City metro.

Real Kansas City reviews

What service & maintenance customers say

★★★★★
“Bought a house with a softener already in and no manual. Cathcart serviced it, got it running right, and put me on their annual plan. Water's been perfect since.”
David R. — Independence, MO
★★★★★
“The annual service is worth it just to not think about salt anymore. They show up, swap the filters, refill the brine tank, and leave a clean report. Easy.”
Mike & Jen T. — Lee's Summit, MO
★★★★★
“Our RO membrane was overdue and the water tasted off. They caught it on the annual visit, replaced it under warranty, and we were back to great water the same day.”
Amanda K. — Parkville, MO

See all reviews →

Service & Maintenance questions

Frequently asked

Do you service systems you didn't install?
Yes — we service most major brands of whole-home filters, softeners, and RO systems regardless of who installed them. If you inherited a system with your house or your original installer disappeared, we'll inspect it, get it running, and put you on a maintenance plan.
How often should my system be serviced?
Whole-home filters and softeners: annually for filter changes and a tune-up, with salt refills as needed in between. RO systems: annual pre/post-filter changes, membrane every 2–5 years. We'll set the right schedule for your specific system and water.
What does the annual service visit include?
A full inspection, filter or media replacement, control-valve recalibration, brine-tank sanitization, an output water test, and a written service report with your next due date. One visit, everything handled.
Is warranty work really free?
Yes. Repairs covered under our lifetime dry-parts warranty or the 5-year valve/media warranty are at no cost to you — parts and labor. We'll tell you upfront whether a repair is warranty or billable before we do the work.
Can I just buy salt and filters from you to do it myself?
Absolutely. We sell OEM-spec filters, membranes, and softener salt to homeowners who prefer DIY, and we'll walk you through the change. Many customers start DIY and move to the service plan once they see what's involved.

Where we work

Areas we serve with Service & Maintenance

We install and service service & maintenance across 16 Kansas City metro communities on both sides of the state line.

Click a city for local service & maintenance details

Ready for cleaner water?

(816) 298-0839

Free quotes over the phone. Same-week installation across the Kansas City metro.