★★★★★
Our old cast iron stack was scaled almost shut. They jetted it and the difference was obvious immediately. Showed me before and after footage.
Wendell A. · Denison, IA
Backflow Testing · Denison, Iowa
Backflow Testing & Repair in Denison, Iowa
Backflow prevention keeps irrigation water, boiler water and process water from being pulled back into the drinking supply when pressure drops. Most Denison water authorities want an annual test on any device protecting a commercial building, a fire line or a lawn irrigation system.
Call (833) 435-9778 and describe what is happening. We will give you an arrival window before you hang up and a flat price before anyone starts work - the same price at 2am as at 2pm.
- 24/7 in Denison
- Flat price
- Same-day service
Call a plumber now
(833) 435-9778Answered 24 hours a day, including weekends and holidays.
Call (833) 435-9778- You have received an annual test notice from the water authority
- An irrigation system with a device that has never been tested
- A device that is leaking or weeping continuously
When to call us in Denison
- You have received an annual test notice from the water authority
- An irrigation system with a device that has never been tested
- A device that is leaking or weeping continuously
- New commercial fit-out requiring certification
- A fire line device due for its yearly check
- You have bought a property and no records exist
What the visit covers
- Full test on RPZ, double check and PVB assemblies
- Rebuild kits carried for the common assemblies
- Repair and retest in the same visit where possible
- Paperwork completed and filed with the authority
- Freeze protection advice for outdoor Iowa devices
- Reminder the following year so you do not miss it
Spring thaw is when sump pumps get tested
A sump pump in Denison sits idle for months and then has one important night. That is usually also the night the power flickers. We check the float, the check valve and the discharge line, and we talk to most Denison homeowners about a battery backup, because an unbacked pump and a storm outage is how basements flood here.
Backflow Testing across Denison
Billybob Plumbing covers Denison and the surrounding communities. Call for service anywhere in the area.
Denison customers on our backflow testing work
★★★★★
Faucet drip in the kitchen that two other people had failed to fix. Correct cartridge, ten minutes, done. Sometimes it just takes someone who carries the right parts.
Yara D. · Manilla, IA
★★★★★
Sink drained slow, laundry backed up, and it turned out to be the main. Jetted it and cameraed it after so we could see it was actually clear.
Chuck E. · Dow City, IA
Other plumbing services in Denison
Hydro Jetting in Denison
High-pressure water that scours grease, scale and roots back to bare pipe wall instead of drilling a hole through them.
Read moreTankless Water Heater Installation in Denison
Endless hot water and a wall back in your basement, done with the gas line and venting sized properly rather than hoped at.
Read moreEmergency Plumber in Denison
Burst pipes, sewage backing up, no water in the house. We answer the phone at 2am and roll a truck the same night.
Read moreCommercial Plumbing in Denison
Restaurants, salons, clinics, offices and shops. Scheduled around your hours so a plumbing problem never closes your doors.
Read moreSump Pump Repair in Denison
The one pump in the house that only matters on the worst night of the year. Tested, repaired, replaced and backed up.
Read moreSewer Line Repair in Denison
Root intrusion, collapsed clay and bellied lines repaired by trenchless lining where the pipe allows and open cut where it does not.
Read moreBackflow Testing near Denison
Same service, same pricing, in the communities around Denison.
Backflow Testing in Denison: common questions
How often does a backflow device need testing?
Annually in most Denison jurisdictions, and some commercial and fire applications more often. We keep your date on file and remind you before it lapses.
What happens if my device fails the test?
We rebuild it and retest. We carry kits for the assemblies we see most in Denison, so failures are usually resolved on the same visit rather than turning into a second appointment.
Do you file the paperwork with the water authority?
Yes. The completed report goes to the authority and a copy goes to you, so there is nothing left on your desk to chase.
Should I have my irrigation backflow tested before winter?
Test on your normal annual schedule, but do winterise the device before the first hard Iowa freeze. A cracked assembly from freezing is a far bigger bill than a test.
Do you work on commercial properties in Denison?
Yes. Restaurants, salons, clinics, offices, churches and multi-tenant buildings across Denison. We schedule outside trading hours at no extra cost so a repair does not cost you a day of business.
Backflow Testing in Denison, day or night
One number, answered around the clock, with the price agreed before we start.
(833) 435-9778