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Irrigation Backflow Testing in Olathe & Johnson County, KS

MW Lawn & Landscape provides certified irrigation backflow testing across Olathe, Overland Park, Lenexa, and Johnson County. Our certified testers check your backflow preventer, file the report with your water district, and can repair or replace the device if it fails all in one visit. Licensed plumber on staff. Family-owned for 25+ years

Schedule Your Backflow Test

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About This Service

Certified Irrigation Backflow Testing in Olathe & Johnson County KS

Body: Your irrigation system connects to your home’s drinking water and without a working backflow preventer, lawn chemicals like fertilizer and pesticide can siphon back into that supply. A backflow test confirms the device is still sealing and protecting your water. Our certified testers run the test, file the results with your water district, and if the device fails, our licensed plumber can repair or replace it and pull the permit so you’re covered and compliant in one visit. We’ll also tell you honestly whether your property even requires a test.

Certified Testers

Our testers are certified to inspect your backflow assembly and submit the required report directly to your water district.

We File the Paperwork

We handle the district filing for you Aqua Backflow for Olathe, plus WaterOne and KC Water so there’s nothing for you to submit.

Repair or Replace On-Site

If your device fails, our licensed plumber can rebuild or replace it and pull the cross-connection permit no second contractor needed.

Honest About What You Need

Not every property is required to test. We’ll tell you straight whether it’s mandated for you or simply smart to check.

What's Included

What’s Included in Our Backflow Testing

 A complete, certified test and everything that comes after if the device fails.

Device Test

A certified tester checks your backflow assembly (PVB, RPZ, or double-check) with calibrated gauges to confirm it’s sealing properly.

District Report Filing

We submit your certified test results to the right water district Aqua Backflow, WaterOne, or KC Water on your behalf.

Pass/Fail Diagnosis

We tell you clearly whether your device passed, and exactly what’s wrong if it didn’t.

Repair & Rebuild

If the assembly fails, our licensed plumber can rebuild or repair it to get it passing and compliant.

Device Replacement & Permit

For devices beyond repair, we replace the assembly and pull the required cross-connection permit.

Commercial Compliance

We keep commercial properties compliant with annual certified testing and filing, on schedule.

What's Included

Backflow Device Failing or Due for a Test? We Handle It.

The situations that bring Johnson County homeowners and businesses to us and how we resolve each one

Common Problems

You got a testing notice from your water district

Your device failed its backflow test

Your backflow preventer is leaking or dripping

The assembly froze and cracked over winter

You’re not sure if your property even needs a test

You need a device installed or replaced

How We Fix It

We test, certify, and file the report with your district for you

Our licensed plumber rebuilds or repairs the assembly to pass

We replace worn seals and internal parts, or the whole device

We replace freeze-damaged assemblies and pull the permit

We tell you honestly whether testing is required for your property

We install or replace the device and handle the cross-connection permit

About This Service

Johnson County's Most Trusted Irrigation Team

25+ years testing, repairing, and installing backflow devices across Johnson County certified, licensed, and straight with you.

Certified & Licensed

Certified backflow testers plus a licensed plumber on staff we test, file, repair, and replace, all in-house.

We File It All for You

We submit your certified results to the district, so you never chase paperwork or miss a deadline.

Honest Guidance

We’ll tell you if a test isn’t even required for your property instead of selling you one you don’t need.

One Team, Every Season

The same team handles your backflow, turn-on, repairs, and winterization one call all year.

How It Works

Getting Tested & Certified is Simple

Three steps to a compliant, protected system.

Call or Request Online

Fill out the form or call (913) 829-4949 send us any testing notice from your water district and we’ll schedule you.

We Test & File

Our certified tester checks your device, and we submit the results to your water district for you.

Repair If Needed

If it fails, our licensed plumber repairs or replaces it and pulls the permit so you’re certified and compliant.

faq

Common Backflow Testing Questions

What homeowners and businesses in Olathe and Johnson County ask us about backflow testing.

Still Have Questions?

Still Have Questions? Call our team or submit a quote request we’re happy to answer anything before you book

What is backflow testing for an irrigation system?

It’s a safety check on the backflow preventer the device that stops irrigation water (which can contain fertilizer and pesticide) from siphoning back into your home’s drinking water. A certified tester attaches gauges to the assembly and confirms its internal valves still seal properly. If they don’t, the device needs repair or replacement to keep protecting your water.

It depends on your property. The City of Olathe no longer requires testing of residential irrigation backflow devices it’s recommended but not mandatory while commercial properties are required to test annually, with results filed to Aqua Backflow. WaterOne requires it for commercial as well. On the Missouri side, KC Water and several cities require annual testing for all irrigation devices. Either way, your system should have a working device, and we’ll tell you exactly what applies to you.

Where it’s required commercial properties in Olathe and WaterOne, and most Missouri-side systems it’s annual, and your water district will send a notice when your device is due. Even where it isn’t mandated, having it checked periodically is smart, since the device can wear out and stop protecting your water. Scheduling the test with your spring turn-on saves a separate service fee.

We diagnose exactly what failed. In many cases our licensed plumber can rebuild the assembly on-site replacing worn seals or internal parts to get it passing. If it’s beyond repair or freeze-damaged, we replace the device and pull the required cross-connection permit, then re-test and file the passing result.

Yes. We submit your certified test report directly to the right district Aqua Backflow for Olathe, WaterOne, or KC Water so you don’t have to deal with the paperwork or worry about missing a deadline.

A standard test is a flat fee that depends on your device and location (Missouri districts also charge a small submission fee). If a repair or replacement is needed, we’ll quote that separately before doing any work. Call (913) 829-4949 for pricing on your system.

Customer Reviews

What Our Clients Say

4.7 ★★★★★ · 178+ Reviews

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Kathleen Cleveland profile picture
Kathleen Cleveland
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We have had many services from MW Landscaping and we are always very happy with their work. They came out to address a few irrigation issues and were on time as promised
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Joey Rayburn-Thomas profile picture
Joey Rayburn-Thomas
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Gave notice before coming w describtion of serve so we were prepared & learning what to expect as new customers.
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karen dillon profile picture
karen dillon
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The work the lawnmaintenance workers did for us was exceptional. I have many shrubs and bushes and they trimmed everything beautifully. And just as important, they cleaned up all the trimmings _ and there was a lot _ as well as some other yard waste. We so appreciate such good work. Thank you.
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Tom Sanders profile picture
Tom Sanders
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Professional, knowledgeable and service oriented. They follow through on detail and requests.
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Teresa Benson profile picture
Teresa Benson
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Knowledgeable & excellent communication!!! Highly recommend!
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Jean-Paul Wong profile picture
Jean-Paul Wong
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great communication, fair prices

Explore Our Complete Irrigation Services

Backflow testing is one part of keeping your system safe and compliant year-round. Whatever your sprinklers need, we handle it.

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Other Services We Offer in Olathe KS

Fertilizer & Weed Control

7-stage fertilizer program customized for Johnson County lawns. Learn More →

Irrigation Lawn Services

Spring turn-on is one part of keeping your system healthy year-round. Whatever your sprinklers need, we handle it Learn More →

Lawn Maintenance

Weekly mowing, edging, trimming, and full property care. Learn More →

Need Your Backflow Tested or Certified?

MW Lawn & Landscape tests, files, and if needed repairs or replaces your backflow device, all in one visit. Certified testers, licensed plumber, no runaround. Get your quote today.