Key Takeaway
Your main water shutoff valve is where the water line enters the house: in the crawl space, in the garage near the water heater or laundry hookup, or outside by the foundation under a concrete ring or clay pipe. Turn a wheel handle clockwise until snug, or a lever a quarter turn until it sits across the pipe. Hillsboro Water asks customers not to operate the meter themselves, so find and test your own valve now, before the freeze season. If it is missing or seized, call SKS Plumbing at (503) 319-9348.
Your main water shutoff valve is almost always where the water line enters the house, which in most Hillsboro homes means the crawl space, the garage near the water heater, or outside by the foundation under a small concrete or clay cover. To close it, turn a round wheel handle clockwise until it is snug, or turn a lever handle a quarter turn so it sits across the pipe.
That takes seconds, provided you already know where the valve is and it still turns. The point of this post is to make sure both are true before a pipe lets go, not after.
Where to Find the Main Shutoff Valve in a Hillsboro Home
Hillsboro Water's own emergency guidance names three places to look:
- In the garage, near the water heater or laundry hookup
- In the crawl space or basement, where the water line enters the home
- Outside near the foundation, often protected by a concrete ring or clay pipe
The fastest way to narrow it down is to find the water meter box near the street, face the house, and picture a straight line from the meter to the foundation. The service line usually follows something close to that path, and the valve sits near where it arrives.
Crawl-space foundations are the norm across Washington County, and they make this harder than it sounds. The valve can sit on the far side of the crawl space from the access hatch, behind ductwork or a sagging batt of insulation. Go and find it once with a flashlight and notice how long it takes to reach. If the honest answer is several minutes on your stomach, that is worth knowing now rather than with water coming through the ceiling.
The outdoor version is the easiest to miss: a small round concrete ring or clay pipe set into a planting bed against the foundation, often buried under bark dust or grown over. Clear it, lift the lid, and check whether you need a tool to reach the handle.
How to Turn It Off
There are two common types.
Gate valve (round wheel handle). Turn it clockwise until it stops. It takes several full turns. Stop at snug; do not lean on it.
Ball valve (lever handle). Turn the lever a quarter turn. When the lever runs along the pipe, the water is on. When it sits across the pipe, the water is off.
Then open a faucet on the lowest level of the house. A short trickle while the pipes drain is normal. Steady flow after a minute or two means the valve is not closing fully.
If the handle is stiff, do not reach for a pipe wrench. Older gate valves corrode inside, and forcing one can snap the stem or leave it jammed partly open, which turns a quick check into a leak you cannot stop.
Why Hillsboro Asks You Not to Use the Meter
Most national guides say that if you cannot find the house valve, you should shut the water off at the meter. Hillsboro Water's emergency information says otherwise. If you need the water shut off at the meter, the city asks you to call 503-615-6700 during business hours or 503-615-6775 after hours, and to "not tamper with the meter yourself unless you are willing to assume liability for damages."
The same page is equally direct about the fix: "If you can't find your waterline shut-off valve, you should have one installed."
If your water comes from a different provider, such as the Portland Water Bureau or Tualatin Valley Water District, look up its emergency line and save it in your phone next to your plumber's number. The middle of a burst pipe is a bad time to be searching for it.
Test It Now, Before the Freeze Season
Mid-September is the right time. The crawl space is dry, the evenings are still light, and nothing is leaking. Portland metro cold snaps tend to arrive between December and February, and those are the nights pipes split, usually when the crawl space is at its coldest, wettest and darkest.
A ten-minute test:
- 1Find the valve and clear a path to it.
- 2Close it fully.
- 3Open a faucet on the lowest level and confirm the flow stops.
- 4Open the valve again slowly, then run a couple of faucets until the air clears.
- 5Show everyone in the house where it is and how it turns.
If the valve will not close completely, or the handle turns without stopping the water, you have found the problem in September instead of at midnight in January. The same valve is also what lets you tell whether a leak is inside the house or on the line outside, which is covered in our guide to finding a hidden water leak.
When the Valve Is Missing, Seized or Out of Reach
Three results from that test are worth a call. There is no valve at all. The valve will not close fully or will not turn by hand. Or the valve works but sits somewhere no one in the house could reach quickly.
Each is a small job next to the damage it prevents. A seized multi-turn gate valve is usually replaced with a quarter-turn ball valve, which is much less prone to seizing, and a shutoff can be added where a house never had one. Washing machine valves that have not been turned in years have the same problem, and we swap those for quarter-turn valves as part of laundry room plumbing.
If a Pipe Bursts Before You Get To It
Close the main valve first. If you cannot find it or it will not close, call your water provider's emergency line to have the water shut off at the meter. If the water heater is involved, turn it off too. Then move anything valuable away from the water and call a plumber.
SKS Plumbing handles emergency plumbing across Hillsboro and the surrounding Washington County communities, seven days a week from 8am to 9pm. If you would rather have us find, test and, if needed, replace your shutoff valve before winter than find out on a cold night that it does not work, call (503) 319-9348.
Frequently Asked Questions
Where the water line enters the home. Hillsboro Water lists three usual spots: in the garage near the water heater or laundry hookup, in the crawl space or basement where the line comes in, or outside near the foundation, often under a concrete ring or clay pipe. Standing at the meter box and looking straight toward the house usually tells you which side of the house to start on.
Hillsboro Water asks customers to call rather than do it themselves. If you need the water shut off at the meter, call 503-615-6700 during business hours or 503-615-6775 after hours. The city's guidance is not to tamper with the meter unless you are willing to assume liability for damages.
A gate valve has a round wheel handle. Turn it clockwise until it stops, which takes several turns, and stop at snug rather than forcing it. A ball valve has a lever. Turn it a quarter turn so it sits across the pipe instead of along it.
Do not put a wrench or a pipe extension on it. Old gate valves corrode inside, and forcing the handle can snap the stem or leave the valve stuck partly open. A seized valve should be replaced, usually with a quarter-turn ball valve, before you need it in an emergency.
Some homes do not. Hillsboro Water's advice is direct: if you cannot find your shutoff valve, you should have one installed. Until then, keep your water provider's emergency number in your phone so you can have the water shut off at the meter if a pipe breaks.