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Research has shown that additional plumbing fixtures, such as separate showers with whirlpool tubs instead of tub/shower combinations, double lavatories, bidets, etc., increase the amount of wastewater generated by a home. Any two additional fixtures may increase septic tank and/or drainfield sizes. If you may be installing several fixtures, an early consultation with our Sanitarians can identify the proper sizing of the septic tanks and drainfield.
A study, den, or similar room which may be converted into a bedroom must be included in the total number of bedrooms.
Number of Bedrooms |
Total Septic Tank Capacity |
Drainfield Size (Coarse Sand / Gravel) |
Drainfield Size (Clean Medium Sand) |
Drainfield Size (Fine / Loamy Sand) |
Drainfield Size (Fill-Type Drainfield) |
---|---|---|---|---|---|
2 or less | 1500 gallons | 800 square feet | 1000 square feet | 1500 square feet | 2500 square feet |
3 | 2000 gallons | 1000 square feet | 1200 square feet | 1800 square feet | 2880 square feet |
4 | 2500 gallons | 1200 square feet | 1600 square feet | 2000 square feet |
3200 square feet |
5 | 3000 gallons | 1600 square feet | 1800 square feet |
2200 square feet |
3500 square feet |
6 | 3500 gallons | 1800 square feet | 2000 square feet | 2500 square feet | 3500 square feet |
Monday - Friday
8:30 a.m. - 5:00 p.m.
(We close at 3:00 p.m. the 3rd Wednesday of every month for a staff meeting.)