Pumping
| Job | Typical range |
|---|---|
| Routine pump out, 1,000 to 1,500 gallon tank, lid accessible | $300 to $500 |
| 1,500 to 2,000 gallon tank | $450 to $700 |
| Over 2,000 gallons | $700 and up |
| Locating and digging a buried lid | Add $50 to $200, every visit |
| Riser installed so it stops happening | $200 to $500, once |
| Effluent filter cleaned | Usually included |
| Effluent filter replaced | $80 to $200 |
| Emergency, evening or weekend | 50 to 100 percent premium |
Two things about these numbers that are specific to here. First, the 2026 regional figure for Fresno and the Central Valley is $300 to $480 for a routine pump out, the lowest band in California. Bay Area contractors charge 20 to 40 percent more than Central Valley contractors for the same scope. Second, Fresno County's minimum tank is 1,500 gallons for one to six bedrooms, so a modern permitted tank here sits at the top of the cheap row or into the next one. Cheap region, bigger tank. They partly cancel out.
Inspection
| Type | Typical range |
|---|---|
| Visual, no pumping | $150 to $300 |
| Real estate inspection with written report | $300 to $650 |
| Full inspection with tank pumped | $400 to $700 |
| Lid buried more than a few inches | Add $200 to $300 |
| Percolation test | $300 to $800 |
Repairs
| Work | Typical range |
|---|---|
| Effluent filter replaced | $80 to $200 |
| Baffle repaired during a pump out | $150 to $500 |
| Baffle or filter work requiring excavation | $500 to $1,500 |
| Distribution box replaced or re-leveled | $300 to $900 |
| Line repair, per section | $1,200 to $4,000 |
| County permits | $200 to $800 |
Replacement, the number people are actually afraid of
| Scope | Typical range |
|---|---|
| Conventional drain field replaced | $5,000 to $15,000 |
| Engineered or alternative dispersal system | $8,000 to $20,000 |
| Advanced treatment system | $15,000 to $30,000 |
| Tank replaced, 1,000 gallon, installed | $8,000 to $15,000 |
| Tank replaced, 1,500 gallon, installed | $12,000 to $22,000 |
| Whole system, tank and dispersal | $8,000 to $22,000 and up |
Note the 1,000 gallon row is mostly historical around here. Fresno County requires 1,500 gallons minimum for one to six bedrooms, so a new permitted install lands on the second row.
The four things that move a Fresno quote
- Your soil, and it is worth four to one. The county's Table 204 allows 0.8 gallons per day per square foot on coarse sand and 0.2 on structured clay. Same house, four times the trench. Massive clay does not get a number at all, it goes to engineered design. This single variable explains most bids that come in thousands apart.
- Leach field or seepage pit. Different excavation, different equipment, different setbacks, different price. A seepage pit needs a minimum 10 foot sidewall below the inlet and a test boring witnessed by the county. A trench field needs area you may not have.
- Whether the replacement will fit. Setbacks are 100 feet from a well to a tank or field and 150 feet to a seepage pit, 50 feet from a property line for a field and 75 feet for a pit, plus a 100 percent expansion area that has to stay open. On a small parcel, the design that fits may be the expensive one by default.
- Access. Distance from the truck to the tank, gates, mature trees, a slab or a pool between the driveway and the work. Hand digging and small equipment cost more than a backhoe with a clear run.
Permits and the county
Septic permitting, site evaluations and liquid waste hauler permits in the unincorporated county run through the Fresno County Department of Public Health, Environmental Health Division, 1221 Fulton Mall, Fresno. Their line is (559) 600-3271. They keep permitting records for existing systems and provide them on request, which is worth doing before you buy a rural parcel or price a replacement.
We publish ranges here, not county fee amounts, because fee schedules change and a stale number in a contractor comparison is worse than no number. Ask the division directly, or ask your contractor to itemize what they are paying on your behalf.
Is any of it covered
Standard homeowners policies generally exclude septic failure, because it is wear and deterioration rather than sudden accidental damage. Sudden collapse or damage from a covered peril can be a different conversation, and it is worth reading your own policy rather than taking a general answer. In a home sale, drain field replacement is commonly negotiated as a seller credit, and that is how a large share of these systems actually get paid for.