- 97124
- 97123
- 97006
A burst supply line, a floor drain pushing up sewage, or a water heater dumping its tank across the garage is an emergency in Hillsboro just as it is anywhere. Forest Grove 24/7 Plumbing dispatches licensed plumbers day or night to the largest city in Washington County. Close the main valve at the house, stop using the fixtures, and call (503) 974-3329.
Hillsboro is about 6 miles east-southeast of our Pacific Ave address, roughly 14 minutes by road via Baseline Street and Tualatin Valley Highway. That is a map estimate. A city of 106,447 people does not have one kind of plumbing, so this page breaks Hillsboro down by what is under the street and what year each part of town was built.
Hillsboro emergency plumbing at a glance
Calls answered at midnight
Call (503) 974-3329 at midnight, on a holiday or on a Sunday morning. A licensed plumber is sent, and the price is clear before work starts.
A city with several ZIPs
Hillsboro addresses mostly use 97124 or 97123. The eastern edge reaches into 97006. Give us the street address and we sort out the rest.
Soft water, specific advice
Hillsboro reports very soft water. That changes what we tell you about scale, water heaters and tankless units, as explained below.
Same-day when it is not urgent
A slow drain, a noisy heater or a weeping valve can usually wait for a same-day appointment when available.
What Runs Under Hillsboro Streets and Into Your House
Hillsboro water comes from the upper Tualatin River, treated at the Joint Water Commission plant, with water from Barney and Scoggins reservoirs added in summer. The city's 2024 report, using 2023 data, lists hardness at 26.1 to 31.9 ppm, which is 1.52 to 1.86 grains per gallon. That is very soft water. No lead service lines exist in the city's service area.
The city's responsibility runs from the main to the meter. From the meter to the building, the pipe belongs to the owner, and so does any repair on that stretch. Sewer works differently. The city and Clean Water Services share the system, but the lateral from your house to the public sewer is the property owner's duty.
That lateral count is large. Hillsboro has about 30,000 of them, and since 2021 the city has run a Lateral Accuracy Project to mark where they actually are. If a plumber needs to dig or bore on your property, call 811 first so utilities are located.
Soft water has practical effects. Scale builds slowly in a tank, on aerators and inside a tankless unit. The US Department of Energy notes that tankless heaters scale in hard water and need flushing with descaling solution, so hard-water towns need that more often than this one. Follow the manual either way.
Emergencies in Hillsboro That Cannot Wait
Call right away for water you cannot stop, sewage backing into a tub or floor drain, a leak near the electrical panel, or no hot water in freezing weather. Gas is different. If you smell gas, leave the building and call NW Natural at 800-882-3377 or 911 from outside. We do not diagnose gas leaks over the phone.
Water pouring out? Turn the main shutoff valve at the house, then open a faucet at the lowest level to drain the pipes. Do not dig into the meter box. Repairs on the customer's side of the meter fall to the customer.
Cold snaps are the other regular trigger. The city's advice is to keep the house at 55 degrees or warmer, let faucets trickle, and never thaw a pipe with a torch or open flame. A plumber can thaw a frozen line for a flat fee that cost guides such as Angi and HomeAdvisor put around $100.
| Situation | How urgent | What you do while waiting |
|---|---|---|
| Burst or split pipe. | Immediate | Close the main valve at the house and shut off power if water reaches outlets. |
| Sewage backing up | Immediate | Stop all water use, keep family away from the wet area. |
| Water heater leaking | Immediate | Close the cold inlet valve, turn off the breaker or gas control. |
| No hot water, mild weather. | Same-day appointment | Check the breaker and the pilot or ignition if you know how. |
| Dripping faucet or running toilet. | Same-day or scheduled | Drop a dye tablet in the tank and check for color. |
| Gas smell | Immediate | Leave, call NW Natural or 911 from outside. |
Ask us anything about a leak, a clog or a heater that quit. A dispatcher answers, and the price is stated before any work begins.
Call (503) 974-3329Before We Arrive: What to Do at Your Hillsboro Property
Know your main shutoff
Find the main water valve before you need it. Most are where the line enters the house, often in a garage, crawlspace or utility closet. Turn it clockwise until it stops, then open the lowest faucet.
Photograph, then protect
Photograph the damage, then move rugs, boxes and electronics off the floor. A wet vac or buckets buy time but do not fix the source.
Free the work area
Clear a path to the water heater, the cleanout or the sink cabinet. Tell dispatch if the property is a commercial space with a keyholder or a locked mechanical room.
Keep the heat on
In cold weather, leave the thermostat at 55 or above and open cabinet doors under sinks on outside walls. Warm air reaching the pipes can keep a frozen one from splitting.
Housing Age and Your Pipes, Neighborhood by Neighborhood
The numbers behind the city: median year built is 1997 across 43,576 homes. About 65 percent went up since 1990, and the 2000s were the biggest decade at 10,846. The older end is real too. About 3,500 homes predate 1960, 1,267 of them from 1939 or earlier.
Orenco Station
This 135-acre area was planned in the 1990s and takes its name from the Oregon Nursery Company. Homes of that vintage are now about thirty years old. At that age original fixtures and supply stops start to fail, and the water heater has likely been replaced once already.
South Hillsboro
South Hillsboro is a master-planned area with an estimated 8,000 homes planned, including the Butternut Creek and Reed's Crossing communities. Development began in the early 2020s. Pipes here are new, so wear is not the cause. Calls tend to involve connections, valves, pressure or a fixture that was never quite right.
Tanasbourne and AmberGlen
This is the regional center on the east edge. Expect commercial work alongside homes, which means larger water heaters, restrooms, grease and backflow devices. Those jobs differ from a house call, and our commercial plumbing page lays out how.
Downtown and Reedville
Downtown Hillsboro centers on the courthouse. If an older house has cast-iron or clay drain lines, a camera will show it, but we do not assume it from the address. Reedville is mostly unincorporated, between Hillsboro and Aloha, with edges inside city limits. Which agency handles water, sewer and permits depends on the exact address.
Services We Dispatch Across Hillsboro
Main drain stoppages are a common reason to call. Angi's 2026 national average for clearing a main sewer clog is $380 (most jobs run $187 to $572), and jetting runs about $350 to $600. Angi's Portland average is $994 (range $259 to $1,785). Sewer line cleaning is the first step, and a camera inspection often follows.
Water heaters are another common one. HomeGuide lists installed standard tanks at $600 to $3,100 while Angi shows $882 to $1,826. Angi's Portland tankless average is $2,800. Replacing a heater in Hillsboro needs a plumbing permit from the Development Services and Permitting Center at 150 E Main St, and the code items include strapping and a safe relief-valve discharge. See water heater replacement for the full picture.
Hidden leaks show up as a high bill or a spinning meter. EPA WaterSense suggests reading the meter, using no water for two hours, and reading it again. Angi puts slab leak detection at an average of $280 (range $150 to $400) and a plumber's diagnosis flat fee near $150. Leak detection uses listening gear and pressure tests rather than opening walls blindly.
For any of these, call (503) 974-3329 and tell dispatch if the space is a shop or office with a keyholder.
Reaching Hillsboro and the Towns Beside It
The road east runs through Cornelius on Baseline Street and Tualatin Valley Highway, which is the same corridor as OR 8. Beaverton sits farther along that route. Reference points we hear often are the Washington County Courthouse on NE 2nd Ave, Rood Bridge Park on the Tualatin River, Shute Park, Hillsboro Airport on NE Cornell Rd, and the MAX Blue Line.
Intel's campus is the city's largest employer. Cornelius Pass Road is in Hillsboro. Tell us the cross streets and we will confirm the right ZIP. Our neighbor Cornelius buys its water from Hillsboro, and North Plains does too.