Septic Inspection Report: Sample and Checklist

A septic inspection report records the condition of a septic system on the day of the visit: where the tank is, what's in it, whether the baffles and drain field are working and what needs fixing. Buyers, lenders, counties and homeowners all read it, so it has to make sense to someone who has never lifted a lid.

Below is what to include in the report, a field checklist your techs can copy, and sample wording for the summary. Some states, such as Massachusetts and Arizona, require an inspection when a property is sold, often on a state or county form. Where that applies, the official form comes first and your own report backs it up.

Reviewed November 6, 2026.

What a septic inspection report should include

A complete septic inspection report has twelve parts:

1. Property and client: address, owner, and who ordered the inspection, such as a buyer, seller, agent or lender.
2. System description: conventional gravity, pump or pressure, aerobic unit or mound; tank material, size and number of compartments; age if known.
3. Records found: permit, as-built drawing and the last pumping date.
4. Tank location: measurements from two fixed points such as house corners, plus a photo and a sketch.
5. Method: visual only, pumped, hydraulic load test or camera, and whether the tank was pumped during the visit.
6. Measurements: liquid level against the outlet, scum thickness and sludge depth.
7. Components: lids and risers, inlet and outlet baffles or tees, effluent filter, distribution box, pump chamber, pump, floats and alarm.
8. Drain field: surfacing effluent, soggy ground, lush strips of grass, odors and probe results.
9. Findings: each defect, with a photo and where it is.
10. Recommendations: repairs, pumping, and an estimate where you do the work.
11. Overall result: in the terms your state or county uses, such as satisfactory, needs repair or failed.
12. Limitations and sign-off: what you could not see or test, and your name, license or certification, signature and date.

Septic inspection checklist for the field

Use this checklist in the order a tech works the site.

Before you open the tank

• Pull the permit and as-built from the county, if available.
• Ask how many people live in the home, when the tank was last pumped and whether the house has been empty.
• Locate the tank and lids, and measure from fixed points.

At the tank

• Lids and risers sound, secure and childproof. Never enter a tank: the gases and low oxygen can kill.
• Liquid level at the bottom of the outlet pipe. Higher points to a blockage downstream; lower points to a leak.
• Scum thickness and sludge depth measured in inches in the first compartment.
• Inlet and outlet baffles or tees present, not corroded and not blocked.
• Effluent filter cleaned and back in place.
• No cracks, roots or groundwater coming in.
• Water run in the house reaches the tank freely at the inlet.

Pump systems

• Pump runs and moves water.
• Floats set correctly, and the high-water alarm sounds when tested.
• Control panel and wiring in good condition.

Distribution box and drain field

• Distribution box level, with flow split evenly to each line.
• No standing water in the box above normal levels.
• No surfacing effluent, saturated soil or odors over the field.
• Setbacks from wells, buildings and property lines look right for local rules.

Before you leave

• Photos of the tank, baffles, measurements and any defects.
• A site sketch with measurements.
• Lids closed and secured.

When does the tank need pumping?

The EPA says a household septic system should be inspected at least every three years, and tanks are typically pumped every three to five years. It also gives measured triggers. Pump the tank when:

• the bottom of the scum layer is within 6 inches of the bottom of the outlet,
• the top of the sludge layer is within 12 inches of the outlet, or
• sludge and scum together fill more than a quarter of the liquid depth.

Write the measurements on the report even when the tank doesn't need pumping, so the next inspector can see the trend. Systems with pumps, floats or other mechanical parts usually need an inspection every year.

Sample septic inspection report summary

The summary is the paragraph most readers see first, so keep it to plain facts. For example:

1,000-gallon two-compartment concrete tank, 22 feet from the northeast corner of the house. Before pumping: sludge 14 inches, scum 4 inches, liquid level at the outlet. Outlet baffle cracked; we recommend replacing it with a sanitary tee and an effluent filter. Distribution box level, with even flow to all three lines. No surfacing effluent or saturated soil over the drain field. Result: satisfactory, with one repair recommended.

Mistakes that weaken a septic report

• No numbers. "Tank functional" tells a buyer nothing. Give the sludge, scum and liquid level.
• No photos. A photo of a cracked baffle ends the argument about whether it was cracked.
• Ignoring a vacant house. A tank in a home that has been empty for months can look fine. Note the occupancy and the method you used.
• Missing limitations. If snow, a deck or a locked gate kept you off the drain field, say so.

Write septic reports in Clevra

Clevra comes with a Septic Tank Inspection starter checklist. Copy it, change it to match your county's items, and your tech fills it in at the lid: liquid level, sludge and scum in inches, baffles, filter, drain field, photos and a signature.

• Switch on Client report and Clevra issues a numbered PDF with your logo, a cover photo and numbered photos, sent to the buyer, agent or homeowner by email or a secure link.
• Turn the cracked baffle into an estimate on the same job.
• Book the next pump-out for when it's due, and Clevra reminds the customer the day before.

Clevra makes its own PDF. It doesn't fill a county's form or file with county portals, so copy your finished report into the official form where one is required. Checklists and reports come with Pro and Business. See septic service software, inspection reports and our comparison of septic software.

Septic inspection report FAQ

What is included in a septic inspection?

Locating the tank, measuring the liquid level, scum and sludge, checking the baffles, filter, pump and alarm, and looking over the distribution box and drain field for signs of failure. The findings go into a written report with photos.

How long does a septic inspection take?

Most take one to three hours. Digging up lids, pumping the tank or running a hydraulic load test adds time.

Does a septic inspection include pumping?

Not always. Many inspectors pump the tank so they can see the baffles and walls, and some states require it for property sales. The report should say whether the tank was pumped.

How often should a septic system be inspected?

The EPA recommends an inspection at least every three years for a typical household system, and yearly for systems with pumps, floats or other mechanical parts.

Can I use Clevra for real estate septic inspections?

Yes. Fill the inspection on site, send the PDF to the buyer and agent the same day, and estimate any repairs on the same job. Clevra doesn't fill state or county forms, so copy the results into the official form where one is required.

Try it on your next inspection

Run one septic inspection start to finish: fill the report at the tank, send the PDF and the repair estimate, and book the next pump-out. The Free plan has no end date, and Pro or Business are free for 14 days, no card needed.

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Sources: EPA, How to Care for Your Septic System; WSU Extension, Inspecting Your Septic Tank.