With vast forests, mountains, rivers, lakes, valleys and the ocean, Washington has abundant natural beauty. However, preserving these features means stormwater runoff is a critical issue for this Pacific Northwest state.

Better control your Washington project’s rainfall runoff with help from AQUALIS. As a leading stormwater maintenance company, we offer comprehensive services that ensure your runoff is appropriately managed, clean, and compliant with laws and regulations.

How Does Stormwater Runoff Impact Washington State?

Washington continues attracting people and businesses, so its cities and towns must prepare for growth. Adding impervious surfaces like pavement, buildings and roofs causes stormwater to rush into storm drains, sewer systems and drainage ditches, which can lead to various issues.

The Washington Stormwater Solutions Experts

AQUALIS offers a full suite of stormwater, wastewater and freshwater management services in Washington. With extensive experience, a clear understanding of regulatory requirements and a client-focused mindset, we can help achieve your environmental compliance goals.

Whether your project is in bustling Seattle or a small logging town, our team can react to your needs quickly. From pond maintenance to shoreline restoration or something else, we would love to take on your environmental project.


Snohomish County, Wash. Underground Stormwater System Rehabilitation

View down a street-level opening, past the grate, wall-mounted metal ladder and flexible pipe to construction worker standing in water at the bottom

A multi-family property received a notice of violation (NOV) listing fifteen deficiencies requiring corrective action. The initial concern was an illicit connection entering the stormwater drainage vault containing approximately 600,000 gallons of runoff. AQUALIS was called to remediate all contaminated stormwater assets including the vault and catch basins on the property.