Circular Letters
- Circular Letter 2024-34 - Public Water System and Local Health Department Drought Preparedness
- Circular Letter 2022-60 Changes to Private Well Testing Laws
- Circular Letter 2016-03 Update Guidance on Sodium and Chloride in Well Water
- Circular Letter 2014-27 Well Completion Reports -Revised 061214
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Circular Letter 2014-22 DEEP General Permit-Discharge of Low Flow Water Treatment Wastewater
- LFWTW Workgroup Meeting Dates (See Circular Letter 2014-22)
- Circular Letter 2010-61 Water Testing of Repaired Wells - Hydrofracking
- Circular Letter 2010-24a Minimum Sanitary Separating Distances
- Circular Letter 2010-19 Private Well Flooding Concerns
- Circular Letter 2009-61a Potential Regulatory Changes: CGS 19-13-B51
- Circular Letter 2009-35 Lake & Other Surface Water Supply Sources
- Circular Letter 2009-17 Point of Use Reverse Osmosis Wastewater
- Circular Letter 2008-79 Local Health Visits - Reviewing Private Well Records
- Circular Letter 2008-53 Geothermal Wells
- Circular Letter 2006-32 Upgrading your Well by Extending the Casing
- Circular Letter 2006-28 Fluoride Monitoring for Private Wells