Environmental Laboratory Certification Program (ELCP)
The Environmental Laboratory Certification Program (ELCP) registers and approves all environmental laboratories (private, municipal, and industrial non-commercial) granting certification for testing of drinking water, wastewater, sewage, solid waste, soils, and other environmental samples for microbiologicals, inorganics, organics, and radiochemicals. The authority for this function is found in the Connecticut General Statues Sections 19a-29a and 25-40 and Public Health Code Regulations 19-4-1; 19a-36-a25 through A33; and 19a-36-A57 through A63. The ELCP office also enforces U.S. Environmental Protection Agency regulations involving environmental laboratory testing (the Safe Drinking Water Act, the Clean Water Act and the Resource Conservation and Recovery Act The Environmental Laboratory Certification Program mission is to promote the benchmark by which accurate, precise, and legally defensible analytical data is reported by the environmental laboratory industry for use in compliance and in accordance with federal and state law. This is accomplished by ensuring that environmental laboratories located in or doing business in CT meet all applicable EPA and CT standards.- In-state Approved Commercial Environmental Laboratories
- In-state Approved Laboratories Certified to Test Drinking Water
- Out-of-State Approved Commercial Environmental Laboratories
- Municipal and Industrial Non-Commercial Environmental Laboratories
- List of Approved Laboratories for Legionella Testing
- In-state lead testing laboratories
- Connecticut Approved Laboratories Certified to Test Perfluorooctanesulfonic acid (PFOS) and Perfluorooctanoic acid (PFOA)
- Initial Lab Application
- Renewal Lab Application
- Application for Approval of Environmental Laboratory Director
Laws and Regulations
- General Statute Sec. 19a-29a
- General Statute 25-40
- Public Health Code Section 19-4-1
- Public Health Code Sections 19a-36-A25 to A33
- Public Health Code Sections 19a-36-a57 to a63
Lab Advisory Committee Minutes
- Circular Letter 2015-05 2015 Proficiency Test Study Update
- Circular Letter 2010-66 - 2011 Proficiency Testing for PCBs in Oil
- Proficiency Testing Schedule and Evaluation
- Proficiency Testing for Chemistry and Microbiology
Analytes and Matrices
- Drinking Water
- Wastewater
- Solid Waste
- Animal and Plant Tissues
- Construction, Renovation and Demolition Building Materials
Miscellaneous Information
- EHDW Circular Letter 2024-18 - Drinking Water Volatile Organic Method Field Reagent Blank
- EHDW Circular Letter 2024-14 - Method Detection Limit (MDL) Guidance
- EHDW Circular Letter 2024-07 - Approved Standard Methods for Analysis Under the SDWA
- EHDW Circular Letter 2023-24 - Drinking Water Action Level for Six Per- and Polyfluoroalkyl Substances (PFAS)
- EHDW Circular Letter 2023-20 - SW846 Compendium update
- EHDW Circular letter 2023-14 - Certification of PFAS in non-potable water
- EHDW Circular Letter 2023-08 - Analysis of Aroclors by Drinking Water Methods 505 and 508
- EHDW Circular Letter 2022-81 - Certification of EPA Method 533
- EHDW Circular Letter 2021-82 - 24-Hour Notification Requirement for Test Results Showing Contaminants
- EHDW Circular Letter 2021-84 - Tenant Notification Requirement
- Circular Letter: 2021-37 - Field Reagent Blanks for Drinking Water Methods 537.1 and 537 rev. 1.1
- CDC Legionella Method
- Policy Concerning Trip Blanks for VOCs Sampling (Circular Letter 2015-27)
- Determination of the Method Detection Limit (MDL) (Circular letter 2021-5)
- Action Levels for Private Wells
- General Permit for Discharge of Storm Water (Circular Letter 2012-15)
- Volatile Organic Chemicals analysis by EPA Methods 524.2 & 524.3 (Circular Letter 2011-18)
- Connecticut ETPH Method
- Microbiological Methods for Analyzing Recreational Water
- Radon Sample Collection for Water
- New England States' Sample Collection & Preservation Guidance Manual for Drinking Water - version 5.0 January 2015
- Related Links
- Minimum Air Sample Collection (Circular Letter 2014-20)
- PCM QC Requirements
- Lab Analyzing in the Field for Asbestos by PCM (Circular Letter 2013-66)
- Certification Changes for 2005 (Circular Letter 2004-8)
- CT Available NIOSH Equivalent Courses