- 97113
- 97123
- 97124
Water that will not stop running, sewage coming up a floor drain, or no hot water on a freezing night will not wait for morning. Forest Grove 24/7 Plumbing dispatches licensed plumbers day or night to Cornelius, about 2.4 miles east of our Pacific Ave address. If water is the trouble, close the main shutoff valve at the house, then call (503) 974-3329.
Cornelius is small and easy to place. It sits between Forest Grove and Hillsboro along Baseline Street and Tualatin Valley Highway, with a compact older core near Baseline and a large share of 1990s houses around it. That mix shapes what breaks, and the rest of this page explains how.
Cornelius emergency plumbing at a glance
Around-the-clock dispatch
Call (503) 974-3329 at any hour, nights and weekends included. Dispatch sends a licensed plumber and you hear a clear price before work starts.
Same-day when it can wait
A slow drain does not need a midnight visit. Same-day appointments are offered when available.
One town, three ZIPs
Most of Cornelius is 97113. Small slices carry 97123 or 97124, and the address you give us is what counts, not the ZIP printed on a bill.
Short drive on Baseline and OR 8
About 2.4 miles east of our Pacific Ave address, along Baseline Street.
What Makes a Cornelius Call Different
The 2020 Census counted 12,694 people in Cornelius, which incorporated in 1893. The railroad tracks south of Baseline Street are the reason the town exists.
The housing numbers tell the plumbing story. Median year built is 1992 across 4,949 homes. About 80 percent went up after 1970, and the 1990s were the peak decade with 1,223 homes. Only about 440 homes predate 1960, and just 105 were built in 1939 or earlier. So we see two kinds of call here, not one.
Old-core calls are about drain lines and supply piping that have had decades to wear, shift or collect roots. The 1990s calls are about appliances and fittings reaching the end of their normal life. A storage water heater lasts roughly 10 to 15 years, according to the US Department of Energy, so a house from the 1990s is likely on its second or third tank by now.
Calls That Come Out of Cornelius Homes
Slow or backed-up drains lead the list. A kitchen line that gurgles, a tub that drains slowly, and a toilet that rises when the washer empties usually point to a clog farther down than a plunger reaches. Cost guides such as Angi put snaking at about $100 to $250. If that does not clear it, a plumber checks the main with a camera. That is the work behind clearing a clogged drain.
Water heaters come next. A pool of water under the tank, a rumbling noise, or lukewarm showers can mean a failed element, a bad thermostat or a tank that has simply aged out. Cost guides list water heater repair in Portland from $266 to $1,114. Age decides repair versus replace, and that is the first question in water heater repair.
Toilets that run on and off are the quiet water wasters. EPA WaterSense says to drop a dye tablet or food coloring in the tank, wait 10 minutes, and look for color in the bowl. Color means a leak, often the flapper, which should be replaced at least every five years. A flapper swap is simple toilet repair, and HomeGuide lists valve or flapper work at $70 to $150 plus a service call.
| What you see | Call right now | Same-day appointment is fine |
|---|---|---|
| Water from a broken pipe. | Yes, after you close the main valve at the house. | Only if the leak is a slow drip you can contain. |
| Sewage in a floor drain or tub. | Yes, and stop using every fixture. | No. |
| No hot water | In freezing weather, yes. | In mild weather, usually yes. |
| Slow drain, one fixture. | No | Yes. |
| Running toilet | No, unless it is overflowing. | Yes. |
| Gas smell | Leave the building and call 800-882-3377 or 911 from outside. | Never wait. |
Not sure which column your problem belongs in? Describe it to the dispatcher and they will sort it out.
Call (503) 974-3329Before We Arrive: What to Do at Home in Cornelius
Close the house valve, leave the meter
Shut the main valve where the line enters your house. Do not touch the meter. In Cornelius the owner is responsible from the meter to the house, so leave the meter to the city.
Stop the flow into a backed-up drain
If sewage is rising, stop flushing, skip the dishwasher and washer, and keep people away from the wet floor. Chemical drain cleaner can splash on whoever opens the line next, so leave it on the shelf.
Smell gas? Go outside first
Do not flip switches or look for the source. Leave the building, then call NW Natural at 800-882-3377 or 911 from outside. We do not diagnose gas leaks on the phone.
Frozen pipe or cold snap
The City advises a steady drip at the faucet farthest from the meter, heat no lower than 55 degrees, and never an open flame to thaw a pipe. If one splits, the plumber handles burst pipe repair after you close the house valve.
Who Owns What: Water, Sewer and Permits
Cornelius Public Works runs the water system, but the water itself is bought from the City of Hillsboro. The city purchased 462 million gallons in 2025. No lead service lines have been reported. Cornelius publishes no hardness figure, so we will not guess one. If water hardness matters for an appliance, ask Public Works.
The dividing line matters in an emergency. The city is responsible for a frozen main or meter, but not for pipes inside the home. From the meter to the house, the pipe is yours.
For sewage, the city maintains the main and Clean Water Services treats what it carries. Your side of the connection belongs to you, so a backup in your own line is a private repair, while a problem in the main is the city's to fix. A camera run tells a plumber which side the blockage is on.
Permits are handled by the Forest Grove Building Division, which Cornelius contracts for building services. Replacing a water heater needs a permit under Oregon rules, and so does altering piping inside walls, ceilings or floors. Swapping a toilet or faucet that is not concealed in a wall does not. Start with the Forest Grove Community Development office at 503-992-3229 if you are unsure.
Getting to Cornelius from Forest Grove
Our Pacific Ave address is about 2.4 miles from Cornelius, roughly 6 minutes by road. That is a map estimate for the drive only. Pacific Avenue carries westbound traffic through Forest Grove on OR 8 and 19th Avenue carries it eastbound, so the ride east runs along Baseline Street and Tualatin Valley Highway.
Useful reference points when you describe where you are: Cornelius City Hall at 1355 N Barlow St, the public library at 1370 N Adair St, Veterans Memorial Park on Baseline, and Cascadia Park. That park is addressed in 97124, so a Cornelius address can carry a Hillsboro ZIP.
If you are looking at a larger place to the east, we also cover the city of Hillsboro, about 6 miles from Forest Grove. Heading north on OR 47, Banks is another town we serve from Forest Grove. Or call (503) 974-3329 and give us your cross streets.