Environmental Health Section - Publications Environmental Engineering - Subsurface Sewage Fish Consumption Advisories Groundwater and Well Contamination Home and Garden Hazards Indoor Environmental Quality IEQ Newsletters School Environmental Health Site Assessments and Chemical Risk Occupational Health Private Wells Toxicology/Risk Assessment IEQ Newsletters Summer 2009 - Emerging Issues (pdf) Spring 2009 - Workplace IEQ (pdf) Winter 2009 - Home IEQ (pdf) Fall 2008 - School IEQ (pdf) Summer 2008 - Mercury (pdf) Spring 2008 - Going Green (pdf) Winter 2008 - Volatile Organic Compounds (pdf) Fall 2007 - Indoor Allergens (pdf) Summer 2007 - Humidity and Mold (pdf) Spring 2007 - Ozone Generating Air Purifiers (pdf) Winter 2007 - Carbon Monoxide (pdf) Fall 2006 - Inaugural Issue (pdf) Private Wells 01 Activated Carbon Treatment of Private Drinking Water Systems (pdf) 02 Aeration Treatment of Private Drinking Water Systems (pdf) 03 Arsenic in Private Drinking Water Wells (pdf) 04 Bacteria in Private Drinking Water Wells (pdf) 05 Frequently Asked Questions About Bottled Water (pdf) 06 Copper in Private Drinking Water Wells (pdf) 07 Distillation Treatment System for Private Drinking Water System (pdf) 08 Fluoride in Private Drinking Water Wells (pdf) 09 Hydrogen Sulfide and Sulfate in Private Drinking Water Wells (pdf) 10 Ion Exchange Treatment of Private Drinking Water Systems (pdf) 11 Iron and Manganese in Private Drinking Water Wells Part 1 (pdf) 11 Iron and Manganese in Private Drinking Water Wells Part 2 (pdf) 12 Lead in Private Drinking Water Wells (pdf) 13 Man Made Chemicals in Private Drinking Water Wells (pdf) 14 Micro Filtration Treatment in Private Drinking Water Wells (pdf) 15 MTBE in Private Drinking Water Wells (pdf) 16 Nitrogen Contamination in Private Drinking Water Wells (pdf) 17 Ozone Treatment of Private Drinking Water Systems (pdf) 18 pH Acidity of Private Drinking Water Wells (pdf) 19 Questions_to_Ask_When_Purchasing_Water Treatment Equipment_for_Your_Home (pdf) 20 Flood and Storm Water Concerns for Private Water Systems (pdf) 21_Reverse_Osmosis_Treatment_of_Private Drinking Water Systems 22 Sodium Chloride in Private Drinking Water Wells (pdf) 23 Private Drinking Water Well Standards (pdf) 24 Private Well Testing (pdf) 25 Ultraviolet Radiation Treatment of Private Drinking Water Systems (pdf) 26 Private Drinking Water Wells -Types of Construction (pdf) 27 Disinfection Procedure for Private Drinking Water Wells (pdf) 28 Private Well Guidance for Determining Well Safe Yield (pdf) 29 Hardwater-Softeners Facts and Issues (pdf) 30 Home Cellar Dwellers (pdf) 31 Geothermal Wells (pdf) 32 Additives Can Extend Life of Underground Fuel Tanks (pdf) 33 Are You Being Double-Crossed by Your Plumbing (pdf) 34 Case Study in the Control of Iron-Manganese Bacteria (pdf) 35 Corrosion of Copper Pipe and Fittings (pdf) 36 Drought Guidelines for Private Well Users (pdf) 37 Electrical Grounds - A Controversial Necessity (pdf) 38 Sampling Private Wells for Bacteria (pdf) 39 Sampling Private Wells for Chemical Analysis (pdf) 40 Sanitary Maintenance of School Water Coolers (pdf) 41 Action Level List for Private Wells (pdf) Chemical Contaminants in Private Wells (pdf) Private Water Supply Overview (pdf) Radium in Private Drinking Water Wells (pdf) Uranium in Private Drinking Water Wells (pdf) Well Casing Extensions (pdf) Circular Letter 2006-28 Fluoride Monitoring for Private Wells (pdf) Circular Letter 2006-32 Upgrading your Well by Extending the Casing (pdf) Circular Letter 2006-36 Well Pressure Tanks and Domestic Appliances (pdf) Circular Letter 2006-43 Separation Distances for Potable Water Wells (pdf) Circular Letter 2008-79 Local Health Visits - Reviewing Private Well Records (pdf) Circular Letter 2009-35 Lake & Other Surface Water Supply Sources (pdf) Circular Letter 2009-61a Potential Regulatory Changes: CGS 19-13-B51 (pdf) Survey - Regulatory Changes B51 (pdf) Circular Letter 2010-19 Private Well Flooding Concerns (pdf) Circular Letter 2010-24a Minimum Sanitary Separating Distances (pdf) Circular Letter 2010-61 Water Testing of Repaired Wells - Hydrofracking (pdf) Environmental Engineering - Subsurface Sewage Circular Letter 95-8 MLSS Stacking (pdf) Circular Letter 1998-13 Septic Updates (pdf) Circular Letter 1999-19 Section 19-13-b100a Updates (pdf) Circular Letter 2000-01 Sewage updates (pdf) Circular Letter 2000-14 Tank Compliance and Pipe-Filter Approval (pdf) Circular Letter 2001-07 Sewage updates (pdf) Circular Letter 2001-10 Licensed Day Care Facilities (pdf) Circular Letter 2001-17 Training Schedule, Regional Map and Filter Letter (pdf) Circular Letter 2002-03 Updates On-site Sewage Disposal (pdf) Circular Letter 2002-24 Accessory Structures and Non-flow Generating Additions (pdf) Circular Letter 2002-25 On-site Sewage Disposal Updates (pdf) Circular Letter 2003-20 Permit Issuance (pdf) Circular Letter 2003-21 Groundwater Monitoring Period (pdf) Circular Letter 2003-22 Wastewater Management Districts (pdf) Circular Letter 2004-03 Technical Standards Revision (pdf) Circular Letter 2005-21 Tank Marking (pdf) Circular Letter 2005-22 Well Exception Requests (pdf) Cirular Letter 2006-29 Groundwater Monitoring (pdf) Circular Letter 2007-11 Geothermal Wells (pdf) Circular Letter 2007-12 Geothermal Wells (pdf) Geothermal Well Paper 2-11 Report (pdf) Circular Letter 2007-28 Well Exception Notice (pdf) Circular Letter 2007-60 DSS Design Flow (pdf) Circular Letter 2008-67 Well Exception Request (pdf) Circular Letter 2009-01 Technical Standards Updates (pdf) Circular Letter 2009-01 Revised Technical Standards Updates (pdf) Circular Letter 2009-17 Point of Use Reverse Osmosis (pdf) Circular Letter 2009-62 Plan Review Fees (pdf) Circular Letter 2009-66 Installer License Verification (pdf) Circular Letter 2010-84 Technical Standards Revision 2011 (pdf) 02-17-2011 Public Sewer Grease Traps & Piping Near Wells (pdf) Circular Letter 2011-70 Water Supply Well Separation Distance Exceptions (pdf) Well_Exception_Application_Electronic_Form (eform) (pdf) Well_Exception_Application (pfd) Circular Letter 2012-33 Phase I and II Training (pdf) Circular Letter 2012-39 Wet Season Monitoring (pdf) Circular Letter 2012-42 Central System Exceptions (pdf) Central_System Exception_Electronic_Form (eform) Central_System_Exception_Application (pdf) Other Exception Applications Circular Letter 2013-31 2013 Phase I and II Training (pdf) Environmental Lab Certification - Lab Advisory Committee Minutes Meeting Minutes
Site Assessments and Chemical Risk
Occupational Health
Private Wells
Toxicology/Risk Assessment
IEQ Newsletters
Fall 2008 - School IEQ (pdf)
Summer 2008 - Mercury (pdf)
Spring 2008 - Going Green (pdf)
Winter 2008 - Volatile Organic Compounds (pdf)
Fall 2007 - Indoor Allergens (pdf)
Summer 2007 - Humidity and Mold (pdf)
Spring 2007 - Ozone Generating Air Purifiers (pdf)
Winter 2007 - Carbon Monoxide (pdf)
Fall 2006 - Inaugural Issue (pdf)
03 Arsenic in Private Drinking Water Wells (pdf)
Circular Letter 1999-19 Section 19-13-b100a Updates (pdf)
Circular Letter 2000-01 Sewage updates (pdf)
Circular Letter 2000-14 Tank Compliance and Pipe-Filter Approval (pdf)
Circular Letter 2001-07 Sewage updates (pdf)
Circular Letter 2001-10 Licensed Day Care Facilities (pdf)
Circular Letter 2001-17 Training Schedule, Regional Map and Filter Letter (pdf)
Circular Letter 2002-03 Updates On-site Sewage Disposal (pdf)
Circular Letter 2002-24 Accessory Structures and Non-flow Generating Additions (pdf)
Circular Letter 2002-25 On-site Sewage Disposal Updates (pdf)
Circular Letter 2003-20 Permit Issuance (pdf)
Circular Letter 2003-21 Groundwater Monitoring Period (pdf)
Circular Letter 2003-22 Wastewater Management Districts (pdf)
Circular Letter 2004-03 Technical Standards Revision (pdf)
Circular Letter 2005-21 Tank Marking (pdf)
Circular Letter 2005-22 Well Exception Requests (pdf)
Cirular Letter 2006-29 Groundwater Monitoring (pdf)
Circular Letter 2007-11 Geothermal Wells (pdf)
Circular Letter 2007-12 Geothermal Wells (pdf)
Geothermal Well Paper 2-11 Report (pdf)
Circular Letter 2007-28 Well Exception Notice (pdf)
Circular Letter 2007-60 DSS Design Flow (pdf)
Circular Letter 2009-01 Technical Standards Updates (pdf)
Circular Letter 2009-01 Revised Technical Standards Updates (pdf)
Circular Letter 2009-62 Plan Review Fees (pdf)
Circular Letter 2009-66 Installer License Verification (pdf)
02-17-2011 Public Sewer Grease Traps & Piping Near Wells (pdf)
Circular Letter 2011-70 Water Supply Well Separation Distance Exceptions (pdf)