BackflowNear Test-Due Reminder

Backflow testing in Olathe, KS

139 backflow testing businesses work within 25 miles of Olathe, 13 of them based in town. 35 have testers on Kansas's roster and 104 are on the approved tester list of WaterOne.

139 businesses within 25 miles

Backflow testing companies near Olathe

What the badges mean
✓ KS Certified Backflow Tester Verified
A state roster lists at least one certified tester at this business, with a current certificate. The state sets the exam and renewal.
✓ KS Utility-Approved Tester Verified On the city list
The company is on a water utility's own approved list (the second badge names the list). That is the utility's approval, not a state license, and it counts for that utility.
3 certified testers
How many certified testers the roster lists at this business.
★ 4.8 (25 reviews)
The Google rating, shown as Google reports it. It does not change the order.

Order is by our quality score, never by payment. How we verify listings.

DS Lawn Care

90/100
✓ KS Utility-Approved Tester Verified ★ 3.7 (29 reviews) On WaterOne list Backflow Testing

15325 S Keeler St, Olathe, KS 66062 · under 1 mile from Olathe

Call (913) 461-5321 Details Website

Verified Oct 2026 · Unclaimed listing

Garrison Plumbing

90/100
✓ KS Utility-Approved Tester Verified ★ 3.9 (26 reviews) On WaterOne list Backflow Testing

15430 S Mahaffie St, Olathe, KS 66062 · under 1 mile from Olathe

Call (316) 573-9011 Details Website

Verified Oct 2026 · Unclaimed listing

TLC Lawn Care Inc

90/100
✓ KS Utility-Approved Tester Verified ★ 4.3 (177 reviews) On WaterOne list Backflow Testing

19600 W 159th St, Olathe, KS 66062 · 1 mi from Olathe

Call (913) 780-5296 Details Website

Verified Oct 2026 · Unclaimed listing

Buhrle Plumbing

90/100
✓ KS Utility-Approved Tester Verified ★ 5 (5 reviews) On WaterOne list Backflow Testing

Olathe, KS 66061, Olathe, KS 66061 · 2 mi from Olathe

Call (913) 782-3999 Details Website

Verified Oct 2026 · Unclaimed listing

Core and Main

90/100
✓ KS Utility-Approved Tester Verified ★ 5 (4 reviews) On WaterOne list Backflow Testing

11510 S Strang Line Rd, Olathe, KS 66062 · 5 mi from Olathe

Call (913) 469-5820 Details Website

Verified Oct 2026 · Unclaimed listing

F.E. Moran

90/100
✓ KS Utility-Approved Tester Verified ★ 3.7 (3 reviews) On WaterOne list Backflow Testing

16815 College Blvd, Lenexa, KS 66219 · 5 mi from Olathe

Call (913) 340-5174 Details Website

Verified Oct 2026 · Unclaimed listing

P1 Service LLC

90/100
✓ KS Utility-Approved Tester Verified ★ 4.9 (13 reviews) On WaterOne list Backflow Testing

11086 Strang Line Rd, Lenexa, KS 66215 · 5 mi from Olathe

Call (913) 529-5000 Details Website

Verified Oct 2026 · Unclaimed listing

Conserva Irrigation

90/100
✓ KS Utility-Approved Tester Verified ★ 4.9 (439 reviews) On WaterOne list Backflow Testing

14021 Stearns St, Overland Park, KS 66221 · 6 mi from Olathe

Call (913) 956-8838 Details Website

Verified Oct 2026 · Unclaimed listing

Johnson Controls

90/100
✓ KS Utility-Approved Tester Verified ★ 2.8 (19 reviews) On WaterOne list Backflow Testing

9850 Legler Rd, Lenexa, KS 66219 · 6 mi from Olathe

Call (913) 894-0010 Details Website

Verified Oct 2026 · Unclaimed listing

C&C Group

90/100
✓ KS Utility-Approved Tester Verified ★ 3.4 (8 reviews) On WaterOne list Backflow Testing

10012 Darnell St, Lenexa, KS 66215 · 6 mi from Olathe

Call (913) 888-6200 Details Website

Verified Oct 2026 · Unclaimed listing

Rooted Landscape

90/100
✓ KS Utility-Approved Tester Verified ★ 4.7 (55 reviews) On WaterOne list Backflow Testing

435 E Main St, Gardner, KS 66030 · 7 mi from Olathe

Call (913) 782-1845 Details Website

Verified Oct 2026 · Unclaimed listing

Seasonal Solutions

90/100
✓ KS Utility-Approved Tester Verified ★ 3.7 (10 reviews) On WaterOne list Backflow Testing

6920 W 153rd St, Overland Park, KS 66223 · 8 mi from Olathe

Call (913) 685-4222 Details Website

Verified Oct 2026 · Unclaimed listing

Metro guide: Backflow testing in Kansas City: every utility's rules, filing portals and published prices in one place.

WaterOne (Johnson County, Kansas): backflow test rules

  • Who must test. These connections require a backflow prevention assembly (BPA). Single-family residential customers are not listed on this commercial page. Source.
  • Notices and deadlines. Each assembly gets a notification number and an assigned due date. Source.
  • How the report is filed. Form at forms.waterone.org (Backflow Assembly Test Form). Not a third-party portal. Source.
  • Tester registration. Required field in the Backflow Assembly Test Form user guide (modified 02/02/2023). Source.
  • Approved testers. List includes testers in KS, MO and other states. Source.

Everything about WaterOne (Johnson County, Kansas)'s backflow program

Never miss your annual backflow test

Most water utilities require the backflow assembly on an irrigation, fire or commercial line to be tested every year, and a missed test can mean a shutoff notice. Tell us when yours was last tested in Olathe and we'll text you a month before it is due, with certified local testers ready to book.

Free. One text before your test is due. No spam, cancel anytime. Privacy

Backflow testing questions in Olathe

Who can test a backflow preventer in Olathe?

A tester certified as Kansas's rules require, and accepted by your water utility. The companies here are on the approved list of WaterOne: companies allowed to file backflow test reports in that system. In Olathe, see WaterOne (Johnson County, Kansas)'s rules below.

How many backflow testing companies serve Olathe?

139 companies on the approved list of WaterOne work within 25 miles of Olathe, 13 of them based in town.

How often do I need a backflow test?

Most utilities require a test when the assembly is installed and then every year. Your utility's notice gives the due date and how the tester files the report.

Approved list: WaterOne approved backflow testers, WaterOne.

Keep looking

Find a tester Set reminder