French Drains & Drainage Systems in University Place, WA

Drainage & French drains in University Place: what to know

Water moves downhill, and on University Place lots that can mean it comes at your house from above or flows toward a neighbor or a slope below. Discharging water at the top or face of a slope can cause erosion and even slope failure, so those outlets are sensitive and often regulated. We don’t dump drain water over an edge.

Instead, we trace where the water comes from and design a system to intercept it, such as a curtain drain uphill of the house, and then carry it to an outlet that’s allowed. That might be a storm connection, an infiltration trench where soil permits, or a controlled discharge at a safe location. Properties near Chambers Creek, Chambers Bay, and the shoreline can have additional rules.

Permits and rules in University Place

Most drainage work doesn’t need a building permit by itself, but the outlet is regulated. Draining toward a neighbor, into the sanitary sewer, or over the edge of a steep slope or bluff is generally off the table. A storm connection or work in the right-of-way needs the city’s approval, and work in or near critical areas can add review. We confirm the legal outlet and the city’s requirements before the first cut.

Rules change and vary by parcel, so we confirm the current requirements with the city before we start.

How we approach it

Trace the source of the water, uphill and on the surface
Pick an outlet that’s allowed and won’t stress a slope
Lay perforated pipe in a fabric-wrapped trench of clean rock, sloped to the outlet
Add cleanouts and finish the grade so surface water is directed too

For the full process, see our Drainage Systems & French Drains page.

Questions from University Place homeowners

Can I send drain water down the slope behind my University Place house?

Usually not without a controlled design. Concentrated water on a slope can cause erosion or instability, and rules often limit it. We’d look at a storm connection or an infiltration option.

What’s a curtain drain in University Place?

A French drain placed uphill of your house or yard to intercept groundwater before it arrives. It’s common on hillside lots.

Will drainage work disturb my slope in University Place?

We keep excavation limited and restore the grade, and for work near steep slopes we confirm what the city requires first.