Perc Test
From Open Source Ecology
- UM extension on Septic Tanks [1]
- 10-60 minutes per inch (MPI) is ideal. Expect higher end for clay soils. [2]
- Leach field size table based on MPI [3]
- 200 GPD design of Rosebud 2000 requires 200 feet for MPI of 50 for Armstrong clay loam [4] which has a Saturated hydraulic conductivity--0.01 to 10.00 micrometers per second [5]
Water Efficient Home
- Water efficient home - https://extension.psu.edu/water-system-planning-estimating-water-needs - 50-100 gpd per person is the standard. Seed Eco-home cuts that down by a factor of 4.
- Dishwasher saves 13 gallons per day [6]. Energy star is 4 gallons per wash [7]
- Washer saves 10 gallons per wash. using about 10 gallons [8]
- Bricor UltraMaxx is 0,56 gpm or 5 gallons per shower instead of 2.5 gpm [9] saves 20-5=15 gallons per person per day [10]
- Niagara Stealth [11] toilet saves 0.8 gpf - 4 gallons per person per day [12]
- Total above is 13-25 gpd per person, about 4x less than typical.
- Seed Eco-Home 1000 would require 50-100 gpd for 2-4 people
- Seed Eco-Home 2000 would require 100-200 gpd for 4-8 people
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