Complying with EPA guidelines for treated wood

Pressure-treated lumber is a staple in construction supply—but it’s also a regulated material under U.S. and Canadian environmental laws. As a distributor, you’re not just responsible for selling it—you’re responsible for storing, labeling, and informing customers correctly.

Here’s how to stay on the right side of EPA (and provincial) guidelines when handling treated wood.

• Know What’s Considered “Treated” Wood

EPA regulations cover wood preserved with substances like:

Chromated Copper Arsenate (CCA)

Alkaline Copper Quaternary (ACQ)

Copper Azole (CA-B, CA-C)

These chemicals protect against rot and insects but pose environmental risks if not handled properly.

• Labeling Requirements

Treated wood must carry clear labeling that includes:

The type of treatment used

The intended use (e.g., above ground, ground contact)

A warning about proper handling and disposal

Manufacturer contact information

Don’t remove tags or labels—they’re part of regulatory compliance.

• Storage Guidelines

Store treated wood off the ground and covered to prevent runoff

Avoid storing near storm drains or open soil

Separate treated from untreated lumber to prevent cross-contamination

In Canada, provincial ministries of the environment may have additional regulations.

• Employee Safety and Handling

Train staff to:

Use gloves when handling treated wood

Wash hands after contact

Avoid cutting or burning treated wood on-site

Clean up sawdust and scraps properly

Provide access to Safety Data Sheets (SDS) and post relevant guidelines in loading and cutting areas.

• Customer Guidance

You may be required to provide customers with:

A copy of the EPA consumer information sheet

Disposal guidelines (e.g., “Do not burn,” “Do not use in gardens”)

Many ERP systems can attach this to invoices or print a slip with each treated wood order.

• Disposal and Scrap Management

Treated wood must be disposed of in approved landfills—never burned

Don’t mix scrap with regular wood waste

Keep dumpsters and collection bins labeled

Some states and provinces may require waste manifests for large loads.

Final Reminder: Non-compliance can result in fines or restrictions—especially for yards near waterways or in urban zones. A little attention to storage, signage, and training goes a long way in staying compliant.