Searching for your go-to Plumber in Union, MO? Signature Plumbing can help. From preventive plumbing to installs and drain cleanings, we respond fast in emergencies. Call 636-742-2533 or contact us online for Union, MO, plumbers.

Our Union, MO, plumbers are fully licensed and certified to handle repairs and help stop repeat issues.

Learn more below:

  • Plumbing issues you might find in your home or property
  • Types of St. Louis plumbing services we provide
  • What to do in a plumbing emergency (quick steps)
  • FAQs by customers and answered by plumbing pros in St. Louis
  • How to contact our St. Louis plumbers for more information

Explore our reviews to read local customer feedback.

Table of Contents

Common Problems our Union, MO, Plumbers Fix

Whether it’s a clog or a leak, we’re here to help.

You’ll often see these problems if you manage a home or property:

  • Leaks and Drips
  • Clogged Drains
  • Sewer Backups
  • Low / Inconsistent Water Pressure
  • No Hot Water / Temperature Swings
  • Frozen or Burst Pipes
  • Overflowing Toilets
  • Water Lines for Faucets and Showers
  • Water Quality (Backflow)
  • Sump Pump Failures

Any one of these issues is a red flag that can lead to bigger problems later.

Reasons for Most Plumbing Calls in Union, MO

Seals, valves, and fittings break down from wear, age, and corrosion. Flexible appliance lines behind dishwashers, refrigerators, and washers can turn brittle or work loose, letting drips hide in cabinets and walls until stains or mold appear.

Scale and sediment from water quality issues build up, choking flow and jamming moving parts. Expect low or uneven pressure and hot water that cuts out or fluctuates. If you notice discoloration, odd taste, or sediment, it may be backflow or a cross-connection—annual testing keeps it safe.

Pressure issues and water hammer crack pipes and stress joints.

When a pressure-reducing valve fails or hydraulic shock hits, a seep can become a burst line—here’s a quick primer on what it is and how to solve it.

Blockages often form from grease, hair, scale, roots, and sagging sections (“bellies”) in the line.

Expect slow drains, gurgling, standing water, or sewer smells; if the odor sticks around, it’s often a vent or main issue.

Infrastructure and site conditions count—undersized heaters, venting errors, freeze–thaw cycles, ground movement, and storm power loss can drive repeat problems.

Hard versus soft water plays a role here, too. Our region pulls from the Missouri and Mississippi Rivers, so hardness can vary by season. These signs point to water hardness problems:

  • Scale on showerheads, aerators, and heater elements
  • Cloudy or spotty glassware after washing
  • Soap that won’t lather and sticky film on fixtures
  • Shorter water heater life or declining efficiency

When you notice these signs, bring in a plumber to test hardness and improve efficiency and practicality at home.

Licensed Plumber in Union, MO | St. Louis Plumber | Signature Plumbing

24/7 Emergency Plumbing Services in Union, MO

Every minute counts when water goes where it shouldn’t.

We pick up day and night to stop leaks, protect your property, and stabilize fast.

  • Burst or leaking pipes
  • Sewer backups and overflows
  • Failed water heaters
  • Main line breaks

If you’re seeing any of the above, call 636-742-2533 and request emergency plumbing service now.

If it’s safe, shut off your home’s main water valve (near the meter or where the line enters), cut power in areas with standing water, and take photos for insurance.

Our Union, MO, Plumbing Services

From quick fixes to full replacements, our licensed plumbers in Union, MO, handle repairs, installs, and maintenance.

Serving Union, MO, Signature Plumbing repairs issues and puts prevention in place.

Plumbing FAQs

Questions about your Union, MO, property’s plumbing?

These are the customer questions we get most often:

Do you handle emergencies?

Yes—day and night.

We triage by phone, roll immediately, and coach you on shutting off water and power until we arrive.

On arrival, we stop the water, protect floors and belongings, and stabilize the system before repairs.

You’ll have clear next steps and a written estimate.

How fast can you get here?

Same-day coverage across Greater St. Louis; we dispatch immediately for active leaks or backups.

Watch for an on-the-way alert with a tight arrival window.

When parts are needed, we line up the soonest return and keep you updated.

What areas do you serve?

St. Louis City and County, St. Charles, Jefferson, and nearby Illinois.

If you’re just outside, call—we’ll try to help or refer.

For multi-unit and commercial jobs, we coordinate access, posting, and staging so tenants and staff can plan around us.

Can you give prices over the phone?

We can give a quick ballpark on simple jobs.

For complex issues, we diagnose on site and present options and pricing before we begin.

We show what failed, explain the fix in plain terms, and record parts and labor so you know exactly what you’re paying for.

Do you repair and install water heaters (including tankless)?

Yes, we take care of it. We service and replace both standard and tankless units, size them correctly, and take care of venting, gas, and descaling. If repair makes sense, we replace failed components; if not, we review replacement options, warranties, and expected efficiency gains.

What causes low water pressure?

Likely causes include mineral buildup, a partially closed valve, a bad PRV, hidden leaks, or upstream supply issues. We verify static and flow pressure, examine fixtures and shutoffs, and find the choke point so showers and taps perform as they should.

Why do my drains gurgle or smell?

In many cases, it’s venting problems or a partial blockage. Refill dry traps, clean stoppers, and keep grease out; call us if more than one fixture acts up. We can cable or hydro-jet lines and camera the main to check for roots, bellies, or collapse.

Do you handle permits and code compliance?

Yes, we handle that. When the job calls for it, we pull permits, arrange inspections, and deliver code-compliant installs and repairs. Clear scope, timelines, and documentation are included for your records or property management files.

Why St. Louis Calls Signature Plumbing

You want a nearby crew that is punctual, knows what they’re doing, and fixes the problem without the upsell. From camera inspections to clogged kitchen sinks, we’re your go-to plumbers in Union, MO.

  • Licensed Pros: Local plumbers—bonded and insured—with years of St. Louis housing and code work.
  • Fast Response: Same-day scheduling and 24/7 emergency service when minutes matter.
  • Clear Pricing: Clear, upfront options and quotes before work starts.
  • First-Visit Fixes: With stocked vehicles and advanced diagnostics, we fix most jobs on the first visit.

Other Union, MO, plumber services we provide include:

When you need us, we’re here.

Call our local plumbers at 636-742-2533, or contact us online to learn more about our Union, MO, plumber services.

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