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Certification of Aerobic Treatment Units

This article discusses Aerobic Septic System Certifications (Aeration Septic System Certifications) - Fine bubble aeration septic systems to meet local building or health department requirements and regulations.

Here are designs and products for aerobic septic treatment units (ATUs) for onsite waste disposal, also called fine bubble aeration systems. We address aerobic septic system design, features, inspection, repair, and maintenance. Product sources are also listed.

Aerobic septic system treatment units (ATUs) are tested and certified by the National Sanitation Foundation which in turn uses the ANSI/NSF Standard 40 Class I effluent limits as the functional target for the treatment system. Before buying and installing an aerobic or aeration treatment system you should ask for and review the documentation about the particular product to confirm that it has been properly specified and is certified as meeting the necessary standards. Of course, even systems that are designed to meet ANSI/NSF Standard 40 Class I effluent limits will not continue to do so unless they are properly installed and properly maintained. The single most common reason cited for failure of aerobic or aeration septic systems in one major study was lack of proper maintenance. (See ATU Failure Rates for details). The sketch shown just above is of an aspirated mixer aerobic system (click for larger image). Photo courtesy US EPA.

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SEPTIC SYSTEMS HOME
HOME BUYERSGUIDE
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SEPTIC SYSTEM DESIGN BASICS
SEPTIC DESIGN ALTERNATIVES
  Wastewater Treatment Levels
  Wastewater Dispersal Methods
  Master List of Septic System Types
  AEROBIC SEPTIC SYSTEMS

    ATU Tank Sizes
    ATU Final Treatment
    ATU Certifications
    ATU Problems
    ATU Failure Rates, Costs
    ATU Maintenance Procedures
    Aerobic Septic Disinfectants- Calcium Hypochlorite
    Aerobic Septic Disinfectants-Pool Chlorine
    ATU Suppliers
  CESSPOOLS
  DRYWELLS
  EVAPORATION-TRANSPIRATION
  GRAVELLESS SYSTEMS
  LAGOON SYSTEMS
  PRESSURE DOSING SYSTEMS
  MEDIA FILTER SYSTEMS
  SEPTIC & GREYWATER FILTERS
  MOUND SYSTEMS
  RAISED BED SYSTEMS
  SAND BED SYSTEMS
  SEWAGE TREATMENT SYSTEMS
  TOILET ALTERNATIVES

  ALTERNATIVE SEPTIC DESIGNERS
  ALTERNATIVE SEPTIC PRODUCTS

More Information on Septic System Diagnosis, Maintenance, & Repair

• Aerobic Septic System Disinfection with Calcium Hypochlorite - Use of calcium hypochlorite tablets for aerobic septic systems
• Aerobic Septic System Disinfection with Chlorine Tablets - US EPA declares use of swimming pool chlorine tablets illegal for septic system disinfection
• The Septic System Information Website home page for this topic
• Septic Systems Inspection, Testing, & Maintenance- online textbook. Detailed how to inspect, maintain, repair information
• The Home Buyer's Guide to Septic Systems
• Septic Tank Pumping Guide: When, Why, How to pump the septic tank
• Home & Outdoor Living Water Requirements
• Septic Tank Capacity vs Usage in Daily Gallons of Wastewater Flow, calculating required septic tank size, calculating septic tank volume from size measurements
• How Big Should the Leach Field Be? - table of soil percolation rate vs. field size
• Septic System Drainfield Absorption System Biomat Formation - what leads to drain field clogging and expensive drainfield repairs
• Table of Required Septic & Well Clearances: Distances Between Septic System & Wells, Streams, Trees, etc.

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