BackflowNear Test-Due Reminder

Backflow testing in Overland Park, KS

160 backflow testing businesses work within 25 miles of Overland Park, 13 of them based in town. 52 have testers on Kansas's roster and 108 are on the approved tester list of WaterOne.

160 businesses within 25 miles

Backflow testing companies near Overland Park

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.

Marmic Fire & Safety

100/100
✓ MO Certified Backflow Tester Verified #43-12842 ★ 3.3 (28 reviews) 4 certified testers Backflow Testing

4008 E 138th St, Grandview, MO 64030 · 10 mi from Overland Park

Call (913) 541-2640 Details Website

Verified Oct 2026 · Unclaimed listing

Plumbline Plumbing

90/100
✓ KS Utility-Approved Tester Verified ★ 4.7 (64 reviews) On WaterOne list Backflow Testing

8617 W 90th St, Overland Park, KS 66212 · under 1 mile from Overland Park

Call (913) 952-9812 Details Website

Verified Oct 2026 · Unclaimed listing

Blue River Plumbing

90/100
✓ KS Utility-Approved Tester Verified ★ 5 (3 reviews) On WaterOne list Backflow Testing

9125 Barton St, Overland Park, KS 66214 · 1 mi from Overland Park

Call (913) 286-0290 Details Website

Verified Oct 2026 · Unclaimed listing

Ryan Lawn & Tree

90/100
✓ KS Utility-Approved Tester Verified ★ 4.7 (284 reviews) On WaterOne list Backflow Testing

9120 Barton St, Overland Park, KS 66214 · 1 mi from Overland Park

Call (913) 381-1505 Details Website

Verified Oct 2026 · Unclaimed listing

Riden Plumbing

90/100
✓ KS Utility-Approved Tester Verified ★ 4.9 (43 reviews) On WaterOne list Backflow Testing

11306 W 89th St, Overland Park, KS 66214 · 1 mi from Overland Park

Call (913) 432-8495 Details Website

Verified Oct 2026 · Unclaimed listing

EW Plumbing LLC

90/100
✓ KS Utility-Approved Tester Verified ★ 4.9 (23 reviews) On WaterOne list Backflow Testing

8830 Bond St, Overland Park, KS 66214 · 1 mi from Overland Park

Call (913) 768-8500 Details Website

Verified Oct 2026 · Unclaimed listing

Siemens

90/100
✓ KS Utility-Approved Tester Verified On WaterOne list Backflow Testing

7938 Marshall Dr, Lenexa, KS 66214 · 2 mi from Overland Park

Call (913) 954-7196 Details Website

Verified Oct 2026 · Unclaimed listing

Temp-CON Inc

90/100
✓ KS Utility-Approved Tester Verified ★ 4.1 (20 reviews) On WaterOne list Backflow Testing

10601 W 79th St, Shawnee, KS 66214 · 2 mi from Overland Park

Call (913) 768-4888 Details Website

Verified Oct 2026 · Unclaimed listing

Hermes Landscaping

90/100
✓ KS Utility-Approved Tester Verified ★ 4 (70 reviews) On WaterOne list Backflow Testing

13030 W 87th St, Lenexa, KS 66215 · 2 mi from Overland Park

Call (913) 888-2414 Details Website

Verified Oct 2026 · Unclaimed listing

A W J Service

90/100
✓ KS Utility-Approved Tester Verified On WaterOne list Backflow Testing

7326 Maple St, Overland Park, KS 66204 · 3 mi from Overland Park

Call (913) 262-3643 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 · 4 mi from Overland Park

Call (913) 888-6200 Details Website

Verified Oct 2026 · Unclaimed listing

BOK Finanical

90/100
✓ KS Utility-Approved Tester Verified ★ 4.3 (34 reviews) On WaterOne list Backflow Testing

12112 Metcalf Ave, Overland Park, KS 66213 · 4 mi from Overland Park

Call (913) 307-1622 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 · 4 mi from Overland Park

Call (913) 529-5000 Details Website

Verified Oct 2026 · Unclaimed listing

Green Outdoors Inc

90/100
✓ KS Utility-Approved Tester Verified ★ 5 (6 reviews) On WaterOne list Backflow Testing

5816 Merriam Dr Suite A, Merriam, KS 66203 · 4 mi from Overland Park

Call (913) 207-4712 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 · 4 mi from Overland Park

Call (913) 894-0010 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 Overland Park

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 Overland Park

Call (913) 340-5174 Details Website

Verified Oct 2026 · Unclaimed listing

MR Plumber

90/100
✓ KS Utility-Approved Tester Verified ★ 4.6 (165 reviews) On WaterOne list Backflow Testing

3057 Merriam Ln, Kansas City, KS 66106 · 6 mi from Overland Park

Call (913) 238-1498 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 Overland Park 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 Overland Park

Who can test a backflow preventer in Overland Park?

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 Overland Park, see WaterOne (Johnson County, Kansas)'s rules below.

How many backflow testing companies serve Overland Park?

160 companies on the approved list of WaterOne work within 25 miles of Overland Park, 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.

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