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Groundwater Protection Program

To keep groundwater safe, the City regulates businesses that use hazardous chemicals or products. Groundwater protection regulations apply to businesses that transport, store and use hazardous chemicals in specific quantities. See regulated chemicals.

New to the groundwater protection program?

For businesses new to the program, regulatory requirements will be implemented in phases. Phase 1 compliance is due by June 28, 2024. Learn more about program requirements and deadlines.

Annual training

Regulated businesses in the groundwater protection area are required to complete an annual training. 

About the protection program

Business Requirements
Compliance Deadlines
Regulated Chemicals
Groundwater Protection Area
Site Inspections
Training and Technical Assistance

Contact us

For more information, or to request copies of any of the documents on this page, contact Clay Walker at 503-618-2487 or Clay.Walker@GreshamOregon.gov.

Report a spill

  • Report hazardous spills by calling 911.
  • To report spills of non-hazardous materials call the City’s Operations and Maintenance office: 503-618-2626
  • After hours, call the City’s Public Works on-call notification number: 503-661-3906.
  • Report illegal dumping on private property to Code Compliance at 503-618-2248 or through My Gresham.
  • Report illegal dumping on public rights-of-way to Metro's Regional Illegal Dumping Patrol at 503-234-3000.
  • Report erosion concerns to 503-618-2474.