Water Damage Restoration in Ontario, CA — 24/7 Emergency Response
Ontario spans 140 years of construction — Model Colony–era homes on century-old plumbing at the city's historic north end, brand-new Ontario Ranch two-stories south of the 60, and one of the country's largest warehouse districts in between. They fail in opposite ways, and SureDry Restoration Inc. restores them all — dispatching from neighboring Pomona, day or night.

Water Damage Experts Who Know Ontario
No other city we serve spans a wider construction range. At the city's historic north end, the Euclid Avenue corridor and districts like Armsley Square and Rosewood Court carry century-old galvanized and cast-iron plumbing under plaster walls. South of the 60, Ontario Ranch's new two-stories fail at builder-grade fittings, upstairs laundry rooms, and wall-chase connections still under warranty. In between sits the airport's logistics district and its hotels, all on a flat valley floor drained by the concrete Cucamonga and Deer Creek channels. SureDry Restoration Inc. is about 15 minutes away in Pomona, and we bring the right playbook to each of those buildings — because they need very different ones.
Water Damage Problems We See Most in Ontario
Ontario's old-plus-new-plus-industrial spread produces distinct failure patterns. If any of these describe your situation, call before the damage compounds.
Homes in and around Armsley Square and Rosewood Court still run original galvanized supply and cast-iron drain lines behind lath-and-plaster. When they let go, drying has to respect historic plaster, hardwood, and trim that cannot simply be torn out and replaced.
Builders now put laundry on the second floor, and a burst washer hose or failed drain pan sends water through the ceiling into the kitchen and great room below. Even 2020s homes are one cheap hose away from a five-figure loss.
New Ontario Ranch owners discover weeping crimp fittings or manifold leaks in walls within the first few years. We dry and document the loss so the owner can pursue the builder warranty and insurance cleanly.
A sheared sprinkler head or roof-drain failure in a logistics building can put water across thousands of square feet of racked inventory overnight. Large-loss extraction, staged drying, and fast documentation protect both the tenant's stock and the landlord's slab.
Ontario has no hillsides to shed water — older downtown blocks depend on aging storm drains, and hard rain ponds at intersections and low driveways near the creek channels. Water standing against stem walls and garage slabs wicks into framing within hours.
Our Water Damage Restoration Process

We dispatch immediately and map the moisture with meters and thermal imaging — behind plaster in the old districts, inside wall chases in the new ones — so nothing stays wet and hidden.
Truck-mounted and high-efficiency units remove standing water aggressively, from a single bungalow room to thousands of square feet of commercial slab.
Air movers and commercial dehumidifiers run under daily documented moisture readings until the structure returns to dry-standard — dried in place wherever original materials can be saved.
Affected surfaces and contents are cleaned with EPA-approved antimicrobials and HEPA equipment — essential after any Category 2 or 3 water event.
If moisture sat long enough for growth, we contain and remediate it in the same project — no second contractor, no gap in responsibility.
Plaster, drywall, flooring, and finishes — we rebuild to pre-loss condition or better, matching historic materials where the home calls for it.
Residential & Commercial Water Damage Restoration
We serve the entire city — the historic districts, the established mid-century neighborhoods, Ontario Ranch, and the commercial corridors around the airport, Ontario Mills, and Guasti. Need other restoration help in the area? See all our restoration services in Ontario, including mold removal and remediation and flood cleanup and water extraction.
Flooded Right Now? Call Us First.
Every hour water sits, it moves deeper into floors, walls, and framing — and the repair bill grows with it. SureDry Restoration Inc. answers 24/7 and reaches most Ontario addresses in about 15 minutes. Call (909) 573-5760 now for emergency water removal and a free estimate.