Environmental Engineering - Subsurface Sewage
Approximately 30% of Connecticut's population reside in buildings that dispose of their domestic sewage with on-site sewage disposal systems which are typically conventional septic systems. In addition to serving residential buildings, septic systems also serve schools, restaurants, and other commercial buildings in non-urban areas. A septic system properly designed, installed, and maintained provides a safe and efficient way of disposing domestic sewage. Improper sewage disposal can result in health hazards and nuisance conditions. Sewage contains pathogens (disease causing organisms); therefore it is essential that it be disposed of properly. Jurisdiction of on-site sewage disposal for design flows of 5,000 gallons per day (GPD) and less lies with State and Local Health Departments, and is regulated by the Public Health Code (PHC) Section 19-13-B103 and the associated Technical Standards.
Protect It and Inspect It: In general, homeowners should have their system inspected every three years by a licensed contractor and have their tank pumped when necessary, generally every three to five years.
Think at the Sink : Avoid pouring fats, grease, and solids down the drain, which can clog a systemís pipes and drainfield.
Donít Overload the Commode : Ask guests to only to put things in the drain or toilet that belong there. For example, coffee grounds, dental floss, disposable diapers and wipes, feminine hygiene products, cigarette butts, and cat litter can all clog and potentially damage septic systems.
Donít Strain Your Drain : Be water efficient and spread out water use. Consider fixing plumbing leaks and installing faucet aerators and water-efficient products, and spread out laundry and dishwasher loads throughout the day. Too much water at once can overload a system if it hasnít been pumped recently.
Shield Your Field : Remind guests not to park or drive on a systemís drainfield, where the vehicleís weight could damage buried pipes or disrupt underground flow.
****NOTICE TO ALL ENGINEERS, INSTALLERS, CLEANERS, PRODUCT MANUFACTURERS AND OTHER INTERESTED PARTIES CURRENTLY ON THE PROGRAM'S MAILING LIST****
Design Manual - Subsurface Sewage Disposal Systems for Households and Small Commercial Buildings:
Regulations and Technical Standards for Subsurface Sewage Disposal Systems
Historical Technical Standards
Exception Applications - All applications are for Local Health Department use only.
We encourage electronic completion and submission utilizing the Electronic Form (eform) including scanned supporting documentation. Please see Circular Letter 2011-70 Water Supply Well Separation Distance Exceptions and/or Circular Letter 2012-42 Central System Exceptions in the Environmental Engineering section under Environmental Health Section-Publications for additional requirements.
- Central System Exception
Inspections of Existing Septic Systems
Approved Septic Tank Precasters
New Product Approvals
Proprietary Leaching Systems H-20 Certifications
DPH Code Advisory Committee
Technical Standards 2011
Phase I: Subsurface Sewage Disposal Certification
Phase II: Subsurface Sewage Disposal Certificate: Reviewing Engineered Design Plans
Installer/Cleaner Exam Information
Content Last Modified on 11/21/2013 1:19:22 PM