A parking garage collects water from cars, weather, and washing, and it all has to drain somewhere. The drainage system must handle oil, grit, and storm surges without backing up or polluting.
The drains
Floor drains and trench drains carry water off each level, pitched toward the collection points so puddles do not form.
The oil separator
Because cars drip oil and fluids, garage drains often run through an oil-water separator before the water leaves the property.
The pumps
Below-grade levels need sump pumps to lift the water up to the storm or sanitary system.
The grit
Sand and road salt wash off the cars and settle in the system. In Gresham, winter salt can corrode the lines, so material choices matter.
The separator
The oil-water separator needs periodic pumping and inspection, and the record matters for environmental compliance. A full separator sends oil downstream.
The call
Keep the garage dry and compliant. Call 888-217-3585 and Gresham Plumbing Helpers will match you with a Gresham commercial plumbing pro.
Plumbing in Gresham: what to know
In Gresham, rain and older housing stock mean corroded fittings and slow drains show up often. Pros in our network know the local quirks and bring the right parts on the first visit.
Across Multnomah County — from Fairview, Troutdale and Happy Valley to ZIP codes like 97030, 97024, 97080 — homeowners deal with the same kinds of issues. The tips above apply locally, and when a job goes beyond a quick fix, a vetted local pro is only a call away.
Need a hand in Gresham?
If a plumbing issue is beyond a quick fix, don't wait for it to get worse. Call 888-217-3585 and Gresham Plumbing Helpers will match you with a vetted local pro — usually within minutes. Learn more about plumbing help in Gresham.