Keep your basement dry in Portland's rainy climate — professional sump pump installation and replacement.
Portland's rainy season is no joke — and a flooded basement can cause thousands of dollars in damage. A properly installed sump pump is your first line of defense against groundwater intrusion and basement flooding.
PNW Plumbing LLC installs, replaces, and repairs sump pumps throughout Portland, Oregon and the surrounding area. We install primary submersible pumps, battery backup systems, and combination units that keep your basement dry even during power outages — exactly when Portland storms are most likely to knock out your power.
If you recognize any of these, call PNW Plumbing at 503-957-8703.
If your basement has flooded even once, a sump pump is essential — Portland's water table makes flooding a recurring risk.
Persistent moisture or musty smell indicates groundwater intrusion that a sump pump can address.
A sump pump that runs constantly may have a failed float switch — it needs repair or replacement.
Test it periodically. A pump that doesn't activate when water enters the pit has failed.
Most sump pumps last 7–10 years. After that, replacement is more cost-effective than risking failure during a storm.
If you have a pump but no battery backup, a power outage during a storm leaves you unprotected — we can add one.
Every job follows the same straightforward process — no surprises.
We assess your basement, existing pit (if any), discharge line routing, and water intrusion patterns to spec the right pump.
We install the sump basin, submersible pump, float switch, check valve, and discharge line — all properly sized and sealed.
We strongly recommend adding a battery backup unit. Portland storms can knock out power for hours — your backup kicks in automatically.
We pour water into the pit and verify the pump activates, pumps down, and shuts off correctly before leaving.
Basic sump pump installation runs $600–$1,200. Adding a battery backup system is $300–$600 more. Full pit excavation and new installation in a basement without an existing pit runs $1,500–$2,500.
For most Portland residential basements, a 1/3 HP to 1/2 HP submersible pump is sufficient. Homes with high water tables or large basements may need 3/4 HP or larger. We'll spec the right size.
In Portland — yes. Power outages often coincide with the exact storms that saturate the ground around your foundation. A battery backup costs a few hundred dollars and can save you from thousands in water damage.
Absolutely. We replace pumps of all brands. If you have an existing pit and discharge line, replacement is usually a straightforward 2–3 hour job.