Circular Letters
- Circular Letter 2023-27 Phase I & II Subsurface Sewage Disposal System Local Health Agent Training
- 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 2012-42 Central System Exceptions
- Circular Letter 2012-39 Wet Season Monitoring
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- Circular Letter 2009-66 Installer License Verification
- Circular Letter 2008-67 Well Exception Request
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- Circular Letter 2003-22 Wastewater Management Districts