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Resources & Articles

Dive into our world of water

Article

All About Chemically Enhanced Sand Filtration (CESF)

One of Clear Water’s best tools for treating sediment-laden or turbid water is chemically enhanced sand filtration, or CESF - but what is it and how does it work?

Article

U.S. Federal Regulatory Drivers – The Clean Water Act, NPDES, and The Endangered Species Act

Resource

CWS FAQs

Article

Transforming Industrial Process Water from Hazardous Waste to Reusable Water

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Event

CASQA 2025

Join us for the CASQA conference on September 15-17 in Pasadena, CA!

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Event

WEFTEC 2025

Come see the Tidal Vision group together at WEFTEC 2025 in Chicago from September 29 - October 1!

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Event

NEBC Business & The Environment 2025

Join Clear Water at this year's NEBC Business & The Environment on December 9-10 in Portland, OR!

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Resource

Washington Stormwater Permits & Information

ISGP, CSGP, MS4? Sort out what's what for stormwater permits in Washington State.

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Resource

Oregon Stormwater Permits & Information

Everything you need to know about stormwater permits in Oregon.

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Resource

California Stormwater Permits & Information

There are three primary categories of stormwater permits in California - we've got the details.

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Stormwater Permits & Info

Interested in learning more about water treatment technologies and regulations? We’ve compiled a list of helpful resources here.

*Please note that the following resources link to sites that are not owned or maintained by Clear Water Services, and we are not responsible for the accuracy of the information presented in the links.

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Relevant US Federal Regulations

Washington

Oregon

California

Stormwater Permits & Info

Washington

Industrial Stormwater General Permit (ISGP)

Construction Stormwater General Permit (CSWGP)

Permit and Reporting Information System (PARIS)

Certified Erosion and Sediment Control Lead (CESCL) Database*

Stormwater Monitoring Page

How to Meet CSWGP Requirements

Ecology Stormwater Management Manuals (SWMMs)

*Clear Water provides CESF Operator and CESCL training as well as CESCL inspections by qualified professionals

Stormwater Permits & Info

Oregon

Industrial 1200-Z Stormwater Discharge General Permit

Construction 1200-C and 1200-CN Stormwater Discharge General Permit

Statewide Water Quality Standards

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Stormwater Permits & Info

California

Industrial General Permit

Construction General Permit

Construction Best Management Practices Handbook

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Stormwater Permits & Info

Relevant US Federal Regulations

NPDES Homepage

Learn about the Clean Water Act

Learn about the Endangered Species Act

Discharges to waterways in the US are regulated by the National Pollutant Discharge Elimination System (NPDES), which was created by the Clean Water Act. The Endangered Species Act further regulates activities affecting critical habitat for threatened or endangered species, such as some species of fish.

We come back because of the quality of service provided. It's nice to have one point of contact for treatment O&M and permit management.
Ryan
Husky Terminal

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