Same-Day Service
Most service calls handled same-day across the Denver metro — and we answer the phone 24/7.
Licensed Backflow & Pressure Specialists
Two Invisible Problems That Deserve Real Attention
Most homeowners don’t think about backflow prevention or water pressure until something goes wrong — a failed inspection, a pipe joint that springs a leak, or water that trickles instead of flows. Both issues affect every faucet, fixture, and appliance in your home, and both can quietly cause damage long before you notice. Done has been solving these problems for Denver metro homeowners since 1999, with the licensing and equipment to handle everything from basic pressure checks to certified backflow testing. See our full lineup of plumbing services to learn how we protect your home’s water system from every angle.
Colorado requires annual backflow preventer testing for most residential irrigation systems and any cross-connection with a non-potable source. Our certified testers complete the inspection, file the required report with your local water authority, and replace or repair the device on the spot if it fails. On the pressure side, we diagnose low or high pressure, install and set pressure-reducing valves, and add thermal expansion tanks to systems with backflow preventers — protecting your water heater and pipes from the stress of pressure spikes.
- Certified Backflow Testers Our plumbers carry the state certifications required to test, repair, and replace backflow prevention devices — and to file the documentation your water provider requires.
- Water Pressure Diagnosis We measure your actual supply pressure, identify whether the source is the street main or your pressure-reducing valve, and give you an honest assessment of what needs to change.
- Code-Compliant Installations Every backflow device and pressure-regulating valve we install meets current Colorado plumbing code, protecting both your home and your relationship with your water utility.
Warning Signs
Signs You May Have a Pressure or Backflow Problem
Water pressure and backflow issues often announce themselves in subtle ways. Here's what to look for before a small problem turns into a costly one.
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Weak Flow at Multiple Fixtures
If pressure is low throughout your home — not just at one faucet — the culprit is usually a failing pressure-reducing valve, a partially closed main, or low supply pressure from the street.
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Banging Pipes (Water Hammer)
That loud bang when you shut off a faucet quickly is water hammer — a pressure surge that stresses pipe joints over time. High incoming pressure or missing air chambers are common causes.
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Failed Annual Backflow Inspection
Denver-area water utilities require annual certification on most backflow preventers. A failed test means the device must be repaired or replaced before you're back in compliance.
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Water Heater Pressure Relief Valve Dripping
A T&P valve that drips or weeps often signals thermal expansion — pressure building inside a closed system with no place to go. This is a direct symptom of missing or undersized expansion tank.
What We Do
Backflow and Pressure Services We Provide
From annual compliance testing to full pressure system upgrades, Done handles the complete range of backflow prevention and water pressure services for Denver homes.
- Annual Backflow Testing & Certification We test your backflow preventer, document the results, and file the required report with your water authority — keeping you compliant without any paperwork on your end.
- Backflow Device Repair & Replacement When a device fails its test or shows wear, we repair or replace it on the spot using code-approved parts and configurations for your specific connection type.
- Pressure-Reducing Valve Service We adjust, rebuild, or replace your PRV to bring incoming pressure into the recommended range, protecting fixtures, appliances, and pipe connections from long-term stress.
- Thermal Expansion Tank Installation Homes with backflow preventers on a closed system need an expansion tank to absorb pressure spikes. We size and install the right tank to protect your water heater and plumbing.
How It Works
Simple, Compliant, and Done Right
Whether you're scheduling a required annual test or dealing with a pressure problem, here's what to expect when you call Done.
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Call or Schedule Online
Call 833-539-9153 or book online at your convenience. Let us know if you've received a notice from your water utility — we'll prioritize accordingly.
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Inspection and Testing
Your certified plumber tests the backflow device or measures your water pressure, then explains exactly what the readings mean and what — if anything — needs to be done.
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Repair, Replacement, or Certification
If the device passes, we file your certification paperwork. If it fails, we quote the repair or replacement before touching anything so you stay in control of the decision.
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Documentation Delivered
We handle all required reporting to your water authority and leave you with a copy of your test results and any installation records — everything you need for your files.
Current Specials
Save on the work your home needs most.
Plumbing
$83
$83 Drain Clearing
Clear any clogged drain
Expires 12/31/2026
Plumbing
Up to $750 OFF
Up to $750 Off a New Water Heater
Tank or tankless water heater replacement
Expires 12/31/2026
Plumbing
$99
$99 Water Heater Tank Flush & Safety Check
Flush, inspect, and extend your water heater's life
Expires 12/31/2026
Plumbing
$50 OFF
$50 Off Plumbing Service
Any plumbing, sewer or drain service
Expires 12/31/2026
Why Choose Done
Upfront Pricing
Flat-rate pricing approved before work begins — no surprises on the invoice.
Licensed & Insured
Fully licensed, bonded, and insured — plumbing, HVAC, and electrical under one roof.
Satisfaction Guaranteed
If it isn't right, we make it right — backed by our workmanship guarantee.
Need a Backflow Test or Pressure Fix? We're Ready.
Licensed and certified. Serving the Denver metro 24/7 since 1999.
What Our Customers Say
Don't just take our word for it — hear from our satisfied customers
★★★★★
I've been using this company for years now, both for my own home and for a rental property, for everything from basic leaks to a new underground sewer line. They're always very prompt and professional, and provide options without being pushy. Today's service guy, Robby, asked how much technical detail I wanted to know, and explained the problem and repair options at my level.
★★★★★
Charles came to my home today with a great attitude he was calm effective and a joy to be around. He is wonderful and descriptive in a way I can understand
Maintenance Membership
Join the Care Club
Total home service care, on a schedule.
Members get priority scheduling, seasonal HVAC tune-ups, an annual plumbing & electrical safety inspection, and exclusive discounts — for less than the cost of a single emergency call.
- Priority scheduling
- Seasonal HVAC tune-ups
- Annual safety inspection
- Exclusive member discounts
- Free dispatch on repairs
- No long-term contracts
Frequently Asked Questions
How often does my backflow preventer need to be tested?
Most Denver-area water utilities require annual testing for backflow prevention assemblies connected to irrigation systems or any cross-connection with a non-potable source. You’ll typically receive a notice from your water provider before the deadline. Done can test and certify the device in a single visit.
What is the normal water pressure range for a home?
Most plumbing fixtures and appliances are designed to operate between 40 and 80 psi. Below 40 psi and you’ll notice weak flow; above 80 psi and you’re putting unnecessary stress on pipe joints, valves, and appliance supply lines. If your PRV is set outside this range, we can adjust or replace it.
Do I need a thermal expansion tank if I already have a backflow preventer?
Almost certainly yes. A backflow preventer turns your plumbing into a closed system — water heated in your tank has nowhere to expand, so pressure spikes instead. An expansion tank absorbs that pressure and protects your water heater and plumbing from premature wear. We can inspect your setup and advise you. You can also explore our water heater services if you have related concerns.
My irrigation system failed its backflow test — what happens next?
A failed test means the device needs to be repaired or replaced before your water utility will clear the violation. Done carries common backflow assembly parts on our trucks, so we can often repair or swap the device the same day as the test. We’ll re-test after the repair and file the updated certification on your behalf.
*Offers cannot be combined with other promotions or applied to dispatch fees. No cash value. Must present offer at time of service. Call for details.
