Septic Tank Pumping Cost: By Tank Size and Schedule (3 References)

Septic tank pumping costs $300 to $700 on average, or $0.30 to $0.70 per gallon.² Angi’s national average is $432, from 6,850 verified projects¹, and Fixr’s is $400.³ Add $200 to $300 if the tank walls need jet cleaning.² Prices below are national averages* for 2026.

*National averages, not local quotes. Your price depends on tank size, access, how long since the last pump, and seasonal demand.

$432

average pump, Angi (6,850 projects)

$0.30 – $0.70

per gallon, HomeGuide

3 – 5 yrs

EPA pumping interval, via HomeGuide

+$200 – $300

jet cleaning add-on, HomeGuide

Quick math: the per-gallon rule reproduces the size tables: a 1,000-gallon tank × $0.30 to $0.70 = $300 to $700, exactly HomeGuide’s row for that size.² Most homes carry 1,000 to 1,500-gallon tanks.¹

Cost by tank size

Tank size	HomeGuide	Angi
750 gallons	$225 – $525	$250 – $550
1,000 gallons	$300 – $700	$325 – $700
1,250 gallons	$375 – $875	$375 – $900
1,500 gallons	$450 – $1,050	$450 – $1,100
1,750 gallons	$525 – $1,225	$550 – $1,250

Two independent sources, near-identical tables — this is about as solid as cost data gets. Fixr’s $400 average reflects its typical job: pumping a 1,250-gallon tank in good condition.³

How often to pump

Tank size	Home size	Frequency (Angi)
500 gallons	1 bedroom	5 years
750 gallons	2 bedrooms	5 years
1,000 gallons	3 bedrooms	3 years
1,250 gallons	4 bedrooms	3 years
1,500 gallons	5 bedrooms	2 – 3 years
1,750 gallons	6+ bedrooms	2 years

The EPA’s baseline is every 3 to 5 years²; heavy water use, garbage disposals and big households push toward the short end.¹ Skipping pumps lets solids accumulate until they clog the system or damage the drain field — a repair that dwarfs the pumping bill.¹³

What moves the price

Access: tanks under decks, on slopes, or buried deep cost more to reach.¹ Fixr’s low-end $200 job assumes the homeowner uncovers the tank lid themselves — a legitimate way to shave the bill.³

Season: spring demand and frozen winter ground both push prices up; summer and early fall are the cheaper windows.¹

Condition: a neglected tank needs jet cleaning ($200 to $300, or $0.20 to $0.30 per gallon) to strip compacted sludge off the walls after pumping.² Fixr’s high-end $1,100 job is exactly that: a 1,500-gallon tank in poor condition, walls cleaned and filter serviced.³

Inspections: budget $250 and up if you also want the system inspected.¹

Worked examples

Example 1 — 1,000-gallon tank, routine pump. HomeGuide: $300 to $700; per-gallon check: 1,000 × $0.30 to $0.70 = the same $300 to $700.² Angi: $325 to $700.¹ The sources bracket each other within $25.

Example 2 — ten years of maintenance at the average. At Angi’s $432 average, pumping on the 3-year cycle costs about 3 × $432 = $1,296 over a decade; the 5-year cycle costs 2 × $432 = $864.¹ Our arithmetic — and either way it is cheap insurance next to a failed drain field.

Example 3 — adding jet cleaning. For a 1,000-gallon tank: $0.20 to $0.30 × 1,000 = $200 to $300, matching HomeGuide’s flat add-on range.² Total for a pump plus deep clean: $500 to $1,000 — HomeGuide’s published combo figure.²

FAQ

How do I know when my tank needs pumping? Slow drains, gurgling pipes, sewage odors, or pooling water over the tank or drain field. If you do not know the last service date, schedule one — a quarter of homeowners do not know theirs.¹

Is pumping the same as cleaning? Pumping removes liquid and floating solids; jet cleaning additionally scrubs compacted sludge off the tank walls for $200 to $300 more.²

Can I make the visit cheaper? Know where your tank lid is and uncover it yourself, and book in summer or early fall rather than spring.¹³

What shortens the interval? More people, more water, garbage disposal use, and smaller tanks.¹

What happens if I skip it? Solids build up, the tank loses capacity, and the system clogs — risking backups and drain-field damage that costs far more than routine pumping.¹

Sources

Angi, How Much Does It Cost to Pump a Septic Tank? (2026 data; average from 6,850 verified projects).
HomeGuide, How Much Does Septic Tank Pumping Cost? (2026).
Fixr, Septic Tank Cleaning Cost (updated January 2025).