Local Stormwater Regulations

You can download ordinances and requirements applicable to construction site runoff control for each of the Napa County Stormwater Management Program (NCSWMP) partners.

  1. American Canyon Stormwater and Runoff Pollution Control Ordinance (PDF)
  2. Calistoga Stormwater and Runoff Pollution Control Ordinance (PDF)
  3. Napa County Stormwater and Runoff Pollution Control Ordinance (PDF)
  4. Napa Stormwater and Runoff Pollution Control Ordinance (PDF)
  5. St. Helena Stormwater and Runoff Pollution Control Ordinance (PDF)
  6. Yountville Stormwater and Runoff Pollution Control Ordinance (PDF)