Catch Basin and Drain Inlet Installation in King County WA
Commercial-grade drainage solutions that control surface water, protect infrastructure, and keep your site compliant.
Sandbagger installs and maintains high-capacity catch basins and drain inlets for streets, parking lots, job sites, and commercial developments across King County.
Why Catch Basins Matter
Your First Line of Defense Against Runoff & Sediment
Catch basins and inlets do more than collect water — they:
Capture debris and sediment before it enters pipes
Prevent clogging and backup in stormwater systems
Improve runoff quality before discharge
Protect roads, structures, and landscaping from water damage
Comply with DOE and King County drainage codes
We install these systems the right way — to function reliably and reduce maintenance costs.
Our Services
Catch Basin & Inlet Installation, Tie-Ins, & Retrofits
We Handle:
New construction catch basin installs (round, square, rectangular)
Retrofitting or upsizing old systems
Drain inlets for parking lots, streets, and commercial slabs
Pipe tie-ins to stormwater systems, drywells, or ponds
Grate selection and installation (traffic-rated, ADA-compliant, domed, etc.)
Full grading and compaction around structure
We ensure every system is built to spec, inspected, and ready to perform.
Inspection & Maintenance
We Also Handle Repairs, Cleanouts & Performance Checks
Vacuum and hydro-jet cleanouts
Sediment removal and clog correction
Grate and riser replacement
Minor repair of cracks, leaks, or settling
Performance inspections with photo documentation
We keep your drainage systems working — and help you avoid regulatory issues.
Why Choose Sandbagger
Drainage Contractors That Know Commercial Standards
Woman-owned, Seattle-based, and fully insured
WA Certified Erosion & Sediment Control Lead
RainWise-certified and DOE-compliant
Trusted by GCs, municipalities, and developers
200+ drainage projects completed across King County
Where We Work
Commercial Drainage Services Across King County WA
We reshape yards and correct slopes across:
Seattle
Bellevue
KENT
SHORELINE
RENTON
Federal Way
auburn
TUKWILA
DES MOINES
and surrounding areas
REVIEWS
testimonials
Site Foreman, Kent WA
They tied in four new catch basins to our storm system and graded it perfectly. Passed inspection without a single correction.
Site Superintendent, Renton WA
Responsive, fair pricing, and no surprises. Excellent work on a tough retrofit.
FAQs
Catch Basin FAQs
Do I need permits for new catch basin installs?
Yes — typically required by the local jurisdiction. We assist with permitting and ensure everything is code-compliant.
How often should commercial basins be cleaned?
At least once per year, or more often in high-traffic or sediment-heavy areas. We offer maintenance plans.
Can you work in active commercial lots or roadways?
Yes. We provide traffic control, off-hours scheduling, and full safety compliance.
Get Catch Basins Installed Right — The First Time
Reach out today for expert commercial drainage installation, repair, or maintenance — done to code and on time.