
Who We Are
Washington Stormwater is a water treatment company specializing in stormwater treatment for small- and large-scale construction projects and industrial water filtration. We’ve provided water treatment and control solutions for a range of high-profile clients throughout Washington State, ranging from Glacier Middle School to Absher Northgate Mall.
With over 20 years of combined experience on construction and industrial sites, our team knows EPA and WSDOE compliance requirements like the back of our hands. We stay well-versed in ever-changing stormwater and wastewater guidelines to ensure that our clients remain compliant throughout their operations.
The Start of Our Water Treatment Company
Our water treatment company began with our founder, Jim Thorwart. Jim worked in the erosion control industry for over 20 years and witnessed the industry's ever-tightening environmental restrictions and ecology standards. He noticed that as these restrictions changed, not many suppliers offered adequate filtration solutions for construction projects to remain compliant.
In 2005, Jim began designing and distributing his own turbid water filtration system that used chitosan, a substance made from crab shells, to remove pollutants from water. Today, we use a similar system — the highly efficient chitosan-enhanced sand filtration (CSEF) system — every day in our water management work.
How We Can Help You
We’re committed to taking the burden of meeting stormwater compliance regulations off of our clients' shoulders. When you hire our team to provide water management control systems, you can receive the following benefits:


3 Steps to Clean Water Discharge
1
STEP 1
Request a Complimentary Consultation
Call us directly or use the form on our site to request your free consultation. We’ll reach out shortly to schedule a time convenient for you.
2
STEP 2
Schedule an Onsite Visit
We’ll examine your water treatment needs, develop a custom solution, and present you with a cost-effective proposal within a short time of your site visit.
3
STEP 3
Leave Your Commercial Water Compliance To Us
You can rest assured that your industrial water discharge and commercial water systems meet environmental compliance regulations for the duration of your project.