Summary of Revisions to Previous Rule Documents


Onsite sewage disposal system requirements for single family dwellings, for major revisions to the Rules, 1926 to 2009.

Note: Only revisions reflecting major content changes are listed.

Select a year: 1926 | 1934 | 1937 | 1940 | 1946 | 1948 | 1955 | 1960 | 1962 | 1964 | 1966 | 1970 | 1974 | 1982 | 1987 | 1997 | 1999 | 2009


1926

  • Waterbody Setback: none
  • Well/Water Supply Setback: none
  • Soil Test: none
  • Septic Tank: none
  • Septic Tank Sizing: none
  • Disposal Area Sizing: none
  • Type of Disposal Area: Cesspool or Leach Pit, Pit Privy

1934

  • Waterbody Setback: none
  • Well/Water Supply Setback: none
  • Soil Test: none
  • Septic Tank: optional
  • Septic Tank Sizing: none
  • Disposal Area Sizing: none
  • Type of Disposal Area: Cesspool or Leach Pit, Pit Privy

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1937

  • Waterbody Setback: none
  • Well/Water Supply Setback: none
  • Soil Test: none
  • Septic Tank: optional
  • Septic Tank Sizing: none
  • Disposal Area Sizing: none
  • Type of Disposal Area: Cesspool or Leach Pit, Pit Privy

1940

  • Waterbody Setback: none
  • Well/Water Supply Setback: none
  • Soil Test: none
  • Septic Tank: optional
  • Septic Tank Sizing: none
  • Disposal Area Sizing: none
  • Type of Disposal Area: Cesspool or Leach Pit, Pit Privy

1946

  • Waterbody Setback: 60
  • Well/Water Supply Setback: 100
  • Soil Test: none
  • Septic Tank: optional
  • Septic Tank Sizing: per capita
  • Disposal Area Sizing: none
  • Type of Disposal Area: Cesspool or Leach Pit, Tile Field, Vee-Plank Trench, Pit Privy

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1948

  • Waterbody Setback: 60
  • Well/Water Supply Setback: 100
  • Soil Test: none
  • Septic Tank: optional
  • Septic Tank Sizing: per capita
  • Disposal Area Sizing: none
  • Type of Disposal Area: Cesspool or Leach Pit, Tile Field, Vee-Plank Trench, Pit Privy

1955

  • Waterbody Setback: 60
  • Well/Water Supply Setback: 100
  • Soil Test: none
  • Septic Tank: optional
  • Septic Tank Sizing: per capita
  • Disposal Area Sizing: none
  • Type of Disposal Area: Cesspool or Leach Pit, Tile Field, Vee-Plank Trench, Pit Privy

1960

  • Waterbody Setback: 60
  • Well/Water Supply Setback: 100
  • Soil Test: none
  • Septic Tank: optional
  • Septic Tank Sizing: per capita
  • Disposal Area Sizing: per capita and soil type
  • Type of Disposal Area: Cesspool or Leach Pit, Tile Field, Vee-Plank Trench, Pit Privy

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1962

  • Waterbody Setback: 60
  • Well/Water Supply Setback: 100
  • Soil Test: none
  • Septic Tank: optional
  • Septic Tank Sizing: per capita
  • Disposal Area Sizing: per capita and soil type
  • Type of Disposal Area: Cesspool or Leach Pit, Tile Field, Vee-Plank Trench, Pit Privy

1964

  • Waterbody Setback: 60
  • Well/Water Supply Setback: 100
  • Soil Test: none
  • Septic Tank: optional
  • Septic Tank Sizing: per capita
  • Disposal Area Sizing: per capita and soil type
  • Type of Disposal Area: Cesspool or Leach Pit, Tile Field, Vee-Plank Trench, Pit Privy

1966

  • Waterbody Setback: 60
  • Well/Water Supply Setback: 100
  • Soil Test: none
  • Septic Tank: optional
  • Septic Tank Sizing: per capita
  • Disposal Area Sizing: per capita and soil type
  • Type of Disposal Area: Cesspool or Leach Pit, Tile Field, Vee-Plank Trench, Pit Privy

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1970

  • Waterbody Setback: 60
  • Well/Water Supply Setback: 100
  • Soil Test: Percolation Test
  • Septic Tank: Required
  • Septic Tank Sizing: Bedroom/Specific use
  • Disposal Area Sizing: Percolation Rate
  • Type of Disposal Area: Vee Plank Trench, Pit Privy, Leach Field, Leach Trench

1974

  • Waterbody Setback: 100
  • Well/Water Supply Setback: 100
  • Soil Test: Site Evaluation
  • Septic Tank: Required
  • Septic Tank Sizing: Bedroom/Specific use
  • Disposal Area Sizing: Soil Profile and Drainage
  • Type of Disposal Area: Chamber, Pit Privy, Leach Field, Leach Trench, Mound, Evaporation Bed

1982

  • Waterbody Setback: 100
  • Well/Water Supply Setback: 100
  • Soil Test: Site Evaluation
  • Septic Tank: Required
  • Septic Tank Sizing: Bedroom/Specific use
  • Disposal Area Sizing: Soil Profile and Drainage
  • Type of Disposal Area: Chamber, Pit Privy, Leach Field, Peat System

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1987

  • Waterbody Setback: 100
  • Well/Water Supply Setback: 100
  • Soil Test: Site Evaluation
  • Septic Tank: Required
  • Septic Tank Sizing: Bedroom/Specific use
  • Disposal Area Sizing: Soil Profile and Drainage
  • Type of Disposal Area: Chamber, Pit Privy, Leach Field, Peat System

1997

  • Waterbody Setback: 100
  • Well/Water Supply Setback: 100 feet private/300 feet public
  • Soil Test: Site Evaluation
  • Septic Tank: Required
  • Septic Tank Sizing: Bedroom/Specific use
  • Disposal Area Sizing: Soil Profile and Drainage
  • Type of Disposal Area: Chamber, Pit Privy, Leach Field

1999

  • Waterbody Setback: 100
  • Well/Water Supply Setback: 100 feet private/300 feet public
  • Soil Test: Site Evaluation
  • Septic Tank: Required
  • Septic Tank Sizing: Bedroom/Specific use
  • Disposal Area Sizing: Soil Profile and Drainage
  • Type of Disposal Area: Chamber, Pit Privy, Leach Field, Engineered Peat System, Gravel-less Tubes and Beds, Drip Irrigation

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2009

  • Waterbody Setback: 100 feet/200 feet/300 feet (engineered)
  • Well/Water Supply Setback: 100 feet/200 feet/300 feet (engineered & public supply)
  • Soil Test: Site Evaluation
  • Septic Tank: Required
  • Septic Tank Sizing: Bedroom/Specific use
  • Disposal Area Sizing: Soil Profile and Drainage
  • Type of Disposal Area: Chamber, Pit Privy, Leach Field, Engineered Peat System, Gravel-less Tubes and Beds, Drip Irrigation
  • Authorized first time systems outside of the SLZ if there is 9 inches of suitable soil.

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Updated 9/22/2023