Emergency Plumbing in Ontario
Burst pipes and backups can't wait. Our 24 hour emergency plumber in Ontario, CA is ready.
Learn morePlumber in Ontario, CA
Need a plumber in Ontario? California Plumbing Pros serves homes and businesses across the Inland Empire, from the Colony and downtown to Ontario Ranch and Cucamonga-Guasti. We handle emergency plumbing, drain cleaning, water heater repair, sewer line repair, and leak detection. Our 24 hour plumber in Ontario, CA is ready when a problem can't wait.
24/7 Emergency Plumbing
Urgent help across Ontario, day or night.
Old & New Homes
From 1950s galvanized to Ontario Ranch copper.
Clear Communication
We explain the cause and your options first.
Residential & Commercial
Service for homes and small businesses.
Your Plumbing Company in Ontario, CA
Ontario can feel like two cities when it comes to plumbing. Central Ontario's 1950s through 1980s homes, including the Colony district and the Cucamonga-Guasti area, often still run on original galvanized steel supply lines that corrode from the inside out and choke off water pressure. Ontario Ranch and the newer neighborhoods were built much later with copper and PEX, but they face their own issue: hard water that attacks copper from the inside.
The water is the common thread. Ontario's citywide average hardness is around 213 parts per million, roughly 12.5 grains per gallon, and some utility zones run considerably higher. That mineral load accelerates pinhole corrosion in copper and builds scale in water heaters, pipes, and fixtures. Rust-colored water from a tap that sat overnight points to galvanized corrosion, while greenish-blue staining on copper joints under a sink is a hard-water pinhole leak in progress. As a plumbing company serving Ontario, we camera-inspect first, then recommend cleaning, repair, or replacement based on what the line actually needs.
- Plumbing services from the Colony and downtown to Ontario Ranch
- Camera inspections for clay, cast iron, and PVC laterals
- 24 hour emergency plumber in Ontario, CA
- Residential and commercial plumbing
Plumbing Services in Ontario, CA
Every plumbing service Ontario homeowners need, from urgent repairs to sewer and water line work. Each service links to full details.
Emergency & Drain Services in Ontario
Fast clearing and urgent help for the drains that back up most in Ontario homes.
Drain Cleaning in Ontario
Hard-water scale and aging lines clog easily. We clear Ontario drains and restore flow.
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Hydro Jetting in Ontario
Hydro jetting scours scale and roots from Ontario's cast iron and clay lines.
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Main Line Plumbing in Ontario
When several Ontario fixtures back up at once, the main line is the likely cause. We clear and inspect it.
Learn moreSewer Services in Ontario
From aging clay to newer PVC, we inspect before recommending repair.
Sewer Line Repair in Ontario
Roots and separated joints are common in Ontario. We repair damaged sewer lines.
Learn moreSewer Line Replacement in Ontario
For collapsed clay or corroded cast iron, we install a durable new sewer line.
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Trenchless Sewer Repair in Ontario
Trenchless lining repairs Ontario laterals without tearing up concrete or landscaping.
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Water Heater Services in Ontario
Hard water is the leading reason water heaters fail early in Ontario.
Water Heater Repair in Ontario
Heavy sediment and aging parts cause hot-water problems. We diagnose and repair water heaters.
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Water Heater Replacement in Ontario
We replace aging Ontario water heaters and remove the old unit.
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Tankless Water Heater Repair in Ontario
We service and descale tankless systems so hard water doesn't choke the heat exchanger.
Learn moreLeak Detection & Water Line Services in Ontario
Hidden leaks and aging supply lines are behind many high water bills in Ontario.
Leak Detection in Ontario
Hidden leaks under slabs and behind walls waste water. We locate them accurately.
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Water Leak Repair in Ontario
We repair leaking pipes, supply lines, and fittings throughout Ontario homes.
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Slab Leak Repair in Ontario
Hard water and clay soil stress under-slab copper. We find and fix slab leaks.
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Water Line Repair in Ontario
We repair main and supply lines that cause low pressure and wet spots.
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Repiping in Ontario
Galvanized and older copper wear out. Repiping Ontario homes restores flow and quality.
Learn moreFixture & Gas Services in Ontario
Everyday repairs for the fixtures Ontario households use most, plus careful gas line service.
Toilet Repair in Ontario
We fix running, clogged, and leaking toilets in Ontario homes and apartments.
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Faucet Repair in Ontario
Hard water wears out Ontario faucets and aerators. We repair drips and low flow.
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Garbage Disposal Repair in Ontario
Jammed or leaking disposals? We repair them in Ontario kitchens quickly.
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Gas Line Repair in Ontario
We repair and test gas lines and appliance connections for Ontario homes.
Learn moreCommon Plumbing Problems in Ontario Homes
These issues show up again and again across Ontario, from the Colony to Ontario Ranch.
Galvanized Corrosion
Central Ontario's pre-1980 homes have steel lines that rust inside.
Copper Pinhole Leaks
Newer builds develop pinholes in hard water over time.
Hard Water Scale
Around 12.5 grains per gallon builds scale in pipes and heaters.
Slab Leaks
Clay soil movement and hard water stress under-slab copper.
Clay & Cast Iron Laterals
Older sewer lines crack and separate as the ground shifts.
Water Heater Sediment
Hard water shortens tank and tankless heater life.
How to Get Plumbing Service in Ontario
A simple process focused on fixing the cause, not just the symptom.
1
Call or Request Service
Tell us what's happening at your Ontario property so we can prepare.
2
Diagnose the Cause
We inspect the line or fixture and explain what we find, with options and pricing.
3
Repair and Confirm
We complete the repair, test the result, and leave the area clean.
Why Ontario Homeowners Choose California Plumbing Pros
Ontario plumbing problems depend on when your home was built and how hard the water is. We identify the material and give you the right options.
- Camera inspections before recommending sewer work
- Repair options for galvanized, copper, clay, and cast iron
- 24/7 availability for urgent Ontario calls
- Clear pricing explained before work begins
Areas We Serve in Ontario
We help homeowners and businesses across Ontario, including these neighborhoods.
The Colony
The Colony, central Ontario, and the older core.
Downtown
Downtown Ontario, Euclid Avenue, and the historic blocks.
Ontario Ranch
Ontario Ranch and the newer south-side communities.
Cucamonga-Guasti
Cucamonga-Guasti and the north Ontario neighborhoods.
Ontario Mills
The Ontario Mills corridor and nearby residential tracts.
Airport Area
The airport corridor and surrounding neighborhoods.
Nearby Cities We Serve
California Plumbing Pros also helps homeowners in these nearby communities.
California Plumbing Pros in Ontario
Find us on the map, then call or request service to get started.
Plumber in Ontario, CA: FAQs
Answers to what Ontario homeowners ask us most.
Do you offer 24 hour emergency plumbing in Ontario?
Yes. California Plumbing Pros handles urgent Ontario plumbing around the clock, including burst pipes, sewer backups, flooding, and no hot water. Call (800) 390-6351 any time.
Is Ontario water hard?
Yes. Ontario's water is hard, with a citywide average around 213 parts per million, roughly 12.5 grains per gallon, and some zones run higher. That mineral load accelerates pinhole corrosion in copper and builds scale in water heaters and fixtures. See water heater repair.
Why do older Ontario homes need repiping?
Central Ontario's 1950s through 1980s homes, including the Colony and Cucamonga-Guasti areas, often still have original galvanized steel supply lines. Galvanized pipe corrodes from the inside out, causing rusty water and low pressure, so a whole-home repipe is a common fix. See repiping.
What causes leaks in newer Ontario Ranch homes?
Newer Ontario Ranch and Cucamonga-Guasti builds use copper supply lines, which can develop pinhole leaks in hard water. Greenish-blue staining on copper joints under a sink is an early sign. Expansive clay soil also stresses buried pipe. See water leak repair.
Do you serve nearby cities like Rancho Cucamonga and Fontana?
Yes. Along with Ontario, we help homeowners in Rancho Cucamonga, Fontana, San Bernardino, Upland, Chino, Montclair, Pomona, Riverside, Corona, Rialto, and other nearby communities.
Do you offer trenchless sewer repair in Ontario?
Yes. When a camera inspection shows the pipe still has enough structure, trenchless pipe lining can seal cracked clay or cast iron laterals from the inside and avoid tearing up driveways, patios, and landscaping.
Need a Plumber in Ontario, CA?
From emergency plumbing to drain cleaning and sewer repair, California Plumbing Pros is ready to help. Call now or request service online.