Circular Letters

• Circular Letter 2023-03 Technical Standards Training Seminars
• Circular Letter 2022-80 Revised 1/10/2023 Technical Standards Updates 
• Circular Letter 2022-31 Family Campgrounds Portable Sewage Tanks 
• Circular Letter 2020-84 Executive Order Affecting Subsurface Sewage Disposal System Licensure Examinations
• Circular Letter 2020-65 Technical Standards Revisions 
• Circular Letter 2017-26 Water Treatment Wastewater
• Circular Letter 2017-22 Temporary Health Care Structures
• Circular Letter 2017-17 Subsurface Sewage Disposal System Jurisdiction
• Circular Letter 2015-29 Sewage Tank Covers, Risers & Safety Devices
• Circular Letter 2012-42 Central System Exceptions
  • Central_System Exception_Electronic_Form (eform)
  • Central_System_Exception_Application
• Circular Letter 2012-39 Wet Season Monitoring 
• Circular Letter 2011-70 Water Supply Well Separation Distance Exceptions
  • Well_Exception_Application_Electronic_Form (eform) 
  • Well_Exception_Application  
• Circular Letter 2009-66 Installer License Verification
• Circular Letter 2009-62 Plan Review Fees
• Circular Letter 2009-35 Lakes and other Surface Water Sources
• Circular Letter 2009-17 Point of Use Reverse Osmosis 
• Circular Letter 2008-67 Well Exception Request   
• Circular Letter 2007-60 DSS Design Flow  
• Circular Letter 2007-28 Well Exception Notice 
• Circular Letter 2007-12 Geothermal Wells
  • Geothermal Well Paper 2-11 Report
• Circular Letter 2007-11 Geothermal Wells  
• Circular Letter 2006-29 Groundwater Monitoring  
• Circular Letter 2005-22 Well Exception Requests   
• Circular Letter 2005-21 Tank Marking
• Circular Letter 2003-22 Wastewater Management Districts
• Circular Letter 2003-21 Groundwater Monitoring Period
• Circular Letter 2003-20 Permit Issuance
• Circular Letter 2002-25 On-site Sewage Disposal Updates
• Circular Letter 2002-24 Accessory Structures and Non-flow Generating Additions
• Circular Letter 2002-03 Updates On-site Sewage Disposal
• Circular Letter 2001-17 Training Schedule, Regional Map and Filter Letter
• Circular Letter 2001-10 Licensed Day Care Facilities
• Circular Letter 2001-07 Sewage updates    
• Circular Letter 2000-14 Tank Compliance and Pipe-Filter Approval
• Circular Letter 2000-01 Sewage updates
• Circular Letter 1999-19 Section 19-13-b100a Updates
• Circular Letter 1998-13 Septic Updates   
• Circular Letter 1995-08 MLSS Stacking