Coralville, Johnson County
Sprinkler Systems in Coralville, Iowa: Installation and Repair
Sprinkler repair, new system installs, backflow testing, and fall blowouts for Coralville homes and businesses. Family-owned out of Marion since 1987.
Family-Owned
Since 1987
Licensed & Insured
Licensed in the state of Iowa
1-Year Warranty
On every system we install
6 certified testers
Backflow testing on staff
Hunter parts
Heads and controllers
Serving Coralville
A Coralville sprinkler company that answers the phone
Coralville sits directly west of Iowa City along I-80 and the Iowa River, with a lot of newer residential and commercial development.
DDM Irrigation has repaired and installed in-ground sprinkler systems across eastern Iowa since 1987. It's the same family business that brothers Dan and Dave started, working out of one shop in Marion. When you call about a Coralville yard, the crew that shows up is ours, not a subcontractor.
Newer Coralville builds often have compacted soil from construction, so head spacing and run times matter more to keep water from sheeting off instead of soaking in.
Irrigation repair in Coralville
What we fix on Coralville sprinkler systems
Most repair calls start with one symptom: a zone that won't run, a wet spot that won't dry out, or a water bill that jumped. We find the cause, tell you what it costs, and fix it.
- Broken or stuck heads
- Mower strikes, snowplow damage, and heads that won't pop up. We carry common Hunter heads on the truck, so most Coralville head repairs are done on the first visit.
- Zones that won't turn on or off
- Usually a valve diaphragm, a solenoid, or a cut wire. We trace it with a meter instead of guessing and digging.
- Leaks and wet spots
- A soggy patch or a jump in the water bill usually means a cracked lateral line or a leaking valve. We find it and fix just that section.
- Dry spots and poor coverage
- We re-aim, re-nozzle, or add heads so the whole yard gets water, not the driveway.
- Controller problems
- Old timers that lose their program, or a swap to a Hunter Wi-Fi controller you run from your phone.
- Backflow repair and testing
- 6 of our crew are certified backflow testers. If a device fails, we rebuild it and re-test it.
Sprinkler system installation in Coralville
How a new Coralville system goes in
We design every system zone by zone for the yard in front of us. Most residential installs are finished in one day, and every one carries our 1-year warranty.
- 01
On-site walk-through
We come out, measure the yard, note the pressure at your spigot, and determine how many zones your yard requires before we quote a number. Free.
- 02
Zone-by-zone design
Head spacing is planned for full coverage, no dry corners. Drip zones for beds can be added as an extra, priced separately from the lawn zones.
- 03
Trenching & pipe
Trenches are cut with a vibratory plow so the sod goes back down clean, with wire pulled to every valve.
- 04
Controller & valves
Hunter controller wired inside the garage or on the outside of your home, valves buried in boxes flush with the ground.
- 05
Same-day finish
Most residential yards are installed, plumbed, wired, tested, and cleaned up in a single day. We walk you through the controller before we leave.
- 06
First year covered
The first winterization in October and first spring start-up in April are included with the install under the 1-year warranty. Product warranty varies by item.
What neighbors say
5.0 on Google
A sprinkler head broke and DDM scheduled fast and arrived right on time. Dave diagnosed it quickly, explained the repair, replaced the head, then checked the rest of the system before leaving.
Kevin S.
Google review
DDM has maintained our system for eleven years. They send reminders in spring and fall, give a two-hour window, and show up prompt and friendly every time. I recommend them 100%.
Mallori D.
Google review
A great experience with DDM Irrigation. They are always on time, highly professional in their work, and the pricing is very reasonable. Highly recommended.
Mohit S.
Google review
Where we work
Coralville and the rest of Johnson County
Coralville is about 28 miles from our shop at 640 51st Street, Marion. We cover 12 counties across eastern Iowa.
See the full service areaCoralville questions
What Coralville homeowners ask us
When is my backflow test due?
The city usually sends a notice. Most cities in the area require the test once a year. Call us when you get it and we'll schedule the visit and file the report.
My system is old. Is it worth repairing?
Often, yes. We can replace worn or off-brand parts with modern equivalents instead of replacing the whole system.
How long does a new installation take?
One day for most yards, two for larger properties.
Do you give free estimates?
Yes. Every estimate is free and in writing.
Coralville quotes
Get a free Coralville estimate
Give us the address and what's happening in the yard. We'll come out, walk it, and put a real number on it.
(319) 774-3750Nearby towns we serve
Services in Coralville
Ready when you are
Get a free walk-through and a real, written estimate
Call, text, or send us the shape of your yard. We'll come out, measure, and put a number on it, no charge, no pressure.