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Supplier Resources


As the North American leader in environmental and hazardous waste management services, our success is critically dependent on maintaining a best-in-class supplier base, capable of furnishing products and services of superior quality and maximum value.

Clean Harbors seeks suppliers who provide consistently high quality products and services, who introduce innovation and creativity, and who deliver sustainable competitive advantage to our business. Suppliers can learn more about our requirements in this section and can learn how to partner with us to meet our business goals. We welcome all potential suppliers who can add value to Clean Harbors by providing best-in-class products and services on a competitive basis.


To ensure efficiency throughout the invoice-to-pay process, Clean Harbors uses PaymentWorks to securely exchange information with vendors. As a supplier to Clean Harbors, you may be contacted directly by PaymentWorks. Any request you receive from PaymentWorks on behalf of Clean Harbors is an authorized communication.

Benefits of Using Clean Harbors PaymentsWorks Portal

  • Maintain your supplier master information.
  • View the status of invoices you have submitted with a Clean Harbors Company-issued purchase order number.
  • Avoid delays in payment due to incorrect check remit address or other critical data.
  • Activate ACH/EFT payments by providing banking information in a secure environment, which will allow Clean Harbors to make payments directly to your bank. (No more waiting for mailed checks.)
  • Review our policies.

Vendors new to Clean Harbors who are contacted by PaymentWorks must complete the online registration in order to provide the required information necessary for Clean Harbors to release payments.

Download the Clean Harbors PaymentWorks new vendor manual

View our list of Clean Harbors companies

Purchase Order Terms and Conditions

Clean Harbors' standard pay terms are net 60 days, unless the vendor agrees to discounted pay terms. Our standard discounted pay terms are 3%15 net 60, 2%30 net 60 or 1%45 net 60. A valid purchase order number must be provided at the time of order and must appear on all vendor invoices when issued.

Download Clean Harbors purchase order terms and conditions

Download Safety-Kleen purchase order terms and conditions

Small Business Development

Clean Harbors is committed to fostering relationships with small businesses. The Small Business Development program is designed to ensure that businesses of diverse backgrounds and ownership have the opportunity to become valued suppliers to Clean Harbors. LEARN MORE

Purchasing Policy

Clean Harbors strives to conduct all of our business activities in a fair, honest, ethical and professional manner. To learn more about our commitment to the highest ethical standards, please review our Purchasing Policy. Learn more

Use of the Clean Harbors Name

Clean Harbors reserves the right to manage the use of the Clean Harbors name for endorsement or promotional purpose. We do not permit any public announcement of a business relationship between a supplier and our Company without the prior written consent of Clean Harbors or its operating units, except where required by law. This includes news releases, advertisements or the use of our name on a supplier website or in promotional literature. If required by law, the supplier should consult with Clean Harbors in advance.

Notification to Suppliers: Fraudulent Purchasing Attempts

Please be advised that there is an ongoing attempt to fraudulently purchase a variety of equipment under the name of Clean Harbors by an unknown third party. They are requesting quotes for equipment under the name of Clean Harbors. These solicitations are NOT valid and are NOT being sent with the authorization of Clean Harbors. If your company is contacted, please disregard the solicitation and contact your local authorities as per your own company procedures related to fraud. We greatly appreciate your cooperation in this matter. Download notification

Credit References

View our United States credit references
View our Canadian credit references - English
View our Canadian credit references - En Français

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