Concrete
Heavy and rigid. Inspect walls, lids and seams. Lifting access and a stable base matter.
Septic Tank Installation & Replacement in Medford, OR
We provide septic tank installation and replacement to Medford, OR. We plan the tank and drain field around the home, soil and groundwater conditions. We also provide 24-hour septic repairs.
A roughly 1,900 sq ft home can have different bedroom counts and wastewater demand. Oregon ordinary tank minima are 1,000 gallons through four bedrooms and 1,500 above four.
Oregon Tank Sizes & Materials
For an ordinary single-family home, minimum tank capacity is 1,000 gallons through four bedrooms and 1,500 gallons above four bedrooms. These are design minimums, not a survey of installed Medford tanks.
| Bedrooms | Minimum liquid capacity | What else matters? |
|---|---|---|
| 3 | 1,000 gallons | Approved use and soil |
| 4 | 1,000 gallons | Design flow and field area |
| 5 | 1,500 gallons | Approved design and equipment |
Tank storage is different from daily treatment flow and field area. A four-bedroom home is a 450-gallons/day example in DEQ guidance. Special dosing septic tanks have separate volume requirements.
Fiberglass
Lightweight composite. Check the shell and fittings. Follow approved support and anchoring details.
Polyethylene
Molded plastic. Correct backfill and burial depth help prevent movement or deformation.
Check the installed permit and tank label before service. New systems need the approved model, layout and site conditions.
Check Sewer First
Confirm whether City of Medford or RVSS sewer is available for the address before committing to onsite replacement.
Evaluate the Soil
DEQ reviews test pits and the initial and replacement field areas. Approval depends on the parcel, not a neighboring system.
Choose the Approved Design
Compare standard trenches, pressure distribution, capping fill, sand filters or approved ATT when suitable. A pump is not a treatment type.
Prepare the Permit
Submit the required plans, land-use compatibility information and supporting exhibits through Oregon e-Permitting.
Finish Before Covering
Request the pre-cover inspection with the required as-built records and photos. Obtain the Certificate of Satisfactory Completion.
Septic Tank Installation & Replacement FAQs
Practical answers for Medford homes and businesses.
Can I choose a bigger tank instead of more field area?
No. Storage and soil treatment are different functions. The approved design controls both.
Can I begin with a site evaluation approval?
A favorable evaluation is not the construction permit. Complete the separate permit step before installation.
A Clear Plan for Your Septic System.
Tell us where you are, what is happening and the service you need.