Capital is Milwaukee’s trusted source for backflow preventer installation, repair, and replacement. We’ve served homeowners across the greater Milwaukee area since 2007 — licensed, local, and backed by a 100% satisfaction guarantee. Call 262-220-7020 or book online.
Serving Milwaukee and Southeast Wisconsin
Capital’s plumbers are licensed, background-checked, and experienced with Milwaukee’s older homes — from pre-war bungalows in Bay View to duplexes in Riverwest. We know the cross-connection risks common in SE Wisconsin housing and show up with the right equipment to address them. No surprises on price, no waiting around.
Backflow Preventer Installation
Capital installs backflow preventers for residential properties across the greater Milwaukee area. We assess your plumbing system, identify cross-connection risks, and install the right device for your situation.
Common installation points include:
Hose bibs and outdoor spigots — one of the most common backflow risks in Milwaukee homes
Lawn irrigation systems — required protection for any in-ground sprinkler system
Boilers and radiant heating systems — especially important in Milwaukee’s older homes with hydronic heat
Laundry tubs and utility sinks — often overlooked cross-connection points in older duplexes and bungalows
Water softeners — drain connections that can create backflow risk without proper protection
We install all major device types including reduced pressure zone assemblies (RPZ), double check valve assemblies, pressure vacuum breakers, and atmospheric vacuum breakers — matched to the hazard level at each location.
Backflow Preventer Repair
Backflow preventers are mechanical devices made of rubber seals, springs, and metal components that wear down over time. A failing device can allow contaminated water into your supply without any visible warning signs.
Signs your backflow preventer may need repair:
- Visible leaking or dripping from the device
- Reduced water pressure at nearby fixtures
- Discolored or unusual-tasting water
- The device is more than five years old and has never been serviced
Capital’s plumbers diagnose and repair backflow preventers quickly — replacing worn seals, springs, or internal components to restore proper protection.
What Capital Delivers
As Milwaukee’s largest locally-owned home services company, every backflow prevention job comes with the same commitment we’ve built our reputation on — licensed work, honest pricing, and guarantees that protect you long after we leave.
— Licensed Milwaukee plumbers with nearly 20 years of local experience
— 100% Satisfaction Guarantee: we’ll make it right or refund your money
— Lifetime Craftsmanship Guarantee: our workmanship is backed for life
— No-Lemon Guarantee: if a part we install fails early, we replace it
— Upfront, no-surprise pricing with flexible financing
— No waiting around: you’ll know exactly when your plumber arrives
Why Milwaukee Homes Need Backflow Protection
Milwaukee’s housing stock creates specific backflow risks that newer construction doesn’t face:
Older plumbing configurations. Pre-war bungalows and duplexes often have threaded laundry tub faucets, direct sewer connections, and unprotected hose bibs — all common cross-connection hazards.
Hydronic heating systems. Many Milwaukee homes heat with boilers and radiant systems. Without a properly installed backflow preventer on the boiler fill line, heating system fluid can contaminate your drinking water.
Irrigation systems. Any home with an in-ground sprinkler system requires backflow protection at the point of connection to the water supply.
Water main pressure fluctuations. Milwaukee’s aging water infrastructure means pressure drops and surges are not uncommon — exactly the conditions that cause backflow events.
Testimonials
What Our Customers Say
Frequently Asked Questions
Q: What is backflow and why is it dangerous?
Backflow occurs when water flows in the wrong direction through your plumbing — pulling contaminated water from irrigation systems, boilers, or drains back into your clean water supply. It’s a serious health hazard that’s often invisible until someone gets sick.
Q: Do I need a backflow preventer in my Milwaukee home?
Many Milwaukee homes — especially those with irrigation systems, boilers, or older plumbing configurations — should have backflow preventers installed. Capital can assess your system and tell you where protection is needed.
Q: How long do backflow preventers last?
Most devices last 5–10 years depending on water quality and conditions. Milwaukee’s hard water and freeze–thaw cycles can shorten lifespan. Dual check valves typically need to be rebuilt or replaced every five years.
Q: How do I know if my backflow preventer is failing?
Common signs include leaking from the device, reduced water pressure, or discolored water. Many failures have no visible signs, which is why regular inspection matters.
Q: What types of backflow preventers do you install?
We install RPZ assemblies, double check valve assemblies, pressure vacuum breakers, and atmospheric vacuum breakers — matched to the specific hazard level at each location in your home.
Q: How much does backflow preventer installation or repair cost in Milwaukee?
Cost depends on the type of device, the location, and whether any existing plumbing needs to be modified. Capital provides upfront, no-surprise pricing before any work begins. Call 262-220-7020 for a quote.
Q: What areas do you serve for backflow prevention services?
Capital serves Milwaukee and Southeast Wisconsin including Wauwatosa, Brookfield, Shorewood, Menomonee Falls, Mequon, West Allis, Waukesha, Glendale, Greenfield, and more. See all service areas.
