How much does a septic drain field cost in Idaho Falls, ID?
| Typical total$12.40 per ft² of drain field | $18,596 |
|---|---|
| Range you should see in bidsthree bids on the same scope normally land inside this | $11,444 – $35,761 |
| Labor portion55% of the job — this is the part that moves by city | $10,228 |
| Material portion45% — bought at national prices | $8,368 |
| Septic Tank Servicers and Sewer Pipe Cleaners pay near Idaho FallsBLS does not publish a metro figure for septic tank servicers and sewer pipe cleaners near Idaho Falls, ID, so this is the Idaho state average, SOC 47-4071 | $48,990/yr |
| U.S. mean for the same tradeSOC 47-4071 | $53,500/yr |
| Versus the national pricetrade pay here runs −8.4% against the U.S. mean | −$904 |
Notes
- Where the number comes from. The national price for a septic drain field replacement is $13.00 per ft² of drain field — drain field replacement pricing published for 2026, $8–$25 per ft² of field. Labor is about 55% of that. Septic Tank Servicers and Sewer Pipe Cleaners near Idaho Falls, ID average $48,990 a year against a U.S. mean of $53,500 — a factor of 0.916 — so the labor half is scaled by that and the material half is not. Source: BLS does not publish a metro figure for septic tank servicers and sewer pipe cleaners near Idaho Falls, ID, so this is the Idaho state average, SOC 47-4071.
- This one falls back to a wider average. BLS did not publish a metro-level wage for this trade near Idaho Falls, ID, so the figure above is a state average. It is still the right order of magnitude, but a local bid carries more weight here than it would in a large metro where the survey has more responses.
- What is in the price: excavation, gravel or chamber media, perforated pipe, the distribution box, backfill, grading and labor.
- What is not: the tank itself, a new perc test, engineered plans, a pump chamber if the site needs one, and county permits. These are the lines that turn a $18,596 quote into a $23,245 invoice, so ask about each one before signing.
- Use this as a bid check, not a quote. It prices an average job in average condition. Difficult access, the state of what is being replaced, the season, and a crew booked out three months all move the real number, and none of them are in a per-unit average.
a septic drain field replacement in Idaho Falls, ID
$18,596 is the typical number, and three bids on the same scope normally land between $11,444 and $35,761.
That is $904 less than the same job priced at the national average.
Why the city changes the number
About 55% of this job is labor — $10,228 of the $18,596 above. Labor is the only part that moves locally; a bundle of material costs what it costs wherever it is nailed down.
Septic Tank Servicers and Sewer Pipe Cleaners near Idaho Falls average $48,990 a year, against a U.S. mean of $53,500. That is a factor of 0.916, so the labor half is scaled by it and the material half is not.
Source: BLS does not publish a metro figure for septic tank servicers and sewer pipe cleaners near Idaho Falls, ID, so this is the Idaho state average, SOC 47-4071.
What the quote should include
The lines that turn a quote into an invoice
Ask about each of them before you sign. On a job this size they are the difference between $18,596 and something a quarter higher.
Use it as a bid check, not a quote
This prices an average job in average condition. Access, the state of what is being replaced, the season, and a crew booked out three months all move the real number, and none of them are in a national average.
If a bid lands outside $11,444 – $35,761, that is not automatically wrong — but it is the question worth asking out loud.
Nearby sizes
Read more
- Repair or Replace — Working Out What Has Actually FailedThe system is backing up, and four of the five likely causes cost a few hundred dollars.
- What a New Septic System Costs, and What Drives the NumberThe tank is a small part. What the ground demands is the rest.
- What a Septic System Costs to Keep — Annually and Over Its LifeThe cheap system to build is not always the cheap system to own, and the gap is measured in decades.
- Septic Drain Field Cost by State — 1,000 ft², All 51This trade has the tightest state-to-state spread of any on the site — which is itself the useful finding when two local quotes differ by half.