Plumbing in Oregon fails quietly in crawls on the wet west side and more honestly in a freeze east of the Cascades. A slow leak at a galvanized joint can rot a joist before anyone sees a drip in the room. Shut the main if a line has split. Know that valve before you need it. If the meter moves with the fixtures off, the leak is live, and a wet crawl with a still meter may be rain, grade, or a gutter instead.
Sort roof water, slope water, and supply water before anyone opens a wall. A cable clears a clog. It does not fix a belly, roots, or a cast-iron drain that has been scaling for decades in an older town. Gutter water poured at the foundation will imitate a pipe, especially where a hill sheds at the house. Say whether the wet spot followed a rain. That one detail keeps a roof leak from being chased as plumbing.
Water heaters in closets and crawls weep at the base while everyone watches the furnace. Name gas or electric, the vent, the pan, and the shutoff. If you smell trouble at a gas vent, stop using it. Do not send a sump or a footing drain into a sanitary line it was never meant to feed.
Access is the west-side truth. A crawl you cannot enter is a leak you will hear about from the floor above. Say if the hatch is blocked or the joists are already soft. Hose bibs on the weather wall still deserve to be shut when a cold snap reaches the valley, and they are a bigger problem east of the mountains. Say which side of the state you are on so the visit is not planned for the wrong freeze.
Say leak, drain, water heater, or water in the crawl, and the town. Say if you can shut the water off. A sagging floor is not a bucket. Rain in the hatch is not a faucet story. Call the number on this page.