About Us

About Rock Creek LLC

Based in Winlock Wa we are your preferred local plumbing pros for all of Lewis and Cowlitz county. with over 25 years of combined experience our plumbers have the knowledg and expertise to solve all your plumbing issues fast! Whether its residential, commercial, new installations, leak repairs, drain clearing or just questions we are here to help 24 hours a day 7 days a week. 

Our Crew

Rand Koskiniemi

Rand Koskiniemi


Rand has 15 years of plumbing experience in  commercial, residential and industrial.

Will answer your call or get back to you as soon as he can!

Jade Koskiniemi

Jade Koskiniemi

Field Manager/Lead Technician

Jade has 10 years plumbing experience in residental and commercial.

He is quick to solves problems and doesn’t mess around.

Ashton Smith

Ashton Smith

Field Technician/ Social Media Manager

Ashton has multiple years of plumbing experience.

He is a natural professional problem solver.


From breaking ground to finishing touches, we have done it all.