Aerobic Septic Inspection Checklist: What Each Visit Must Cover

What does an aerobic septic maintenance inspection include?

An aerobic maintenance inspection is a check of every working part of the system, a disinfection test on spray systems, and a signed report. Texas doesn't leave the list to the provider's imagination. The state's Sample Testing and Reporting Record, Figure 3 in 30 TAC 285.90, lists the items a provider marks operational or inoperative at each visit, and TCEQ says the provider should note whether every component is working during each site visit.

Here's that checklist, with what a real check of each item looks like from the homeowner's side. Not every system has every part. Recirculation pumps and some filters are brand-specific, and drip systems have no spray area vegetation line.

The chlorine residual test on spray systems

If your system sprays, every required inspection includes a disinfection test. The state's testing table calls for a total chlorine residual of at least 0.1 mg/l in the pump tank, or a fecal coliform count no higher than 200 per 100 ml, at each required test.

The sample comes from the pump tank. Texas rules require spray systems to have an unthreaded sampling port in the treated effluent line in the pump tank for exactly this reason. A provider using a field kit gets a color reading in a minute or two, and the number belongs on your report.

A single-family home doesn't need lab tests for BOD and TSS. Under the state table, those annual grab samples apply to non-single-family systems. Kaufman County's order, Section 10(J), also requires annual BOD/TSS testing for any non-residential system, and for a residential system that also takes wastewater from a non-residential source, such as a home business, with results sent to Development Services every year.

A zero or near-zero chlorine reading means effluent is going onto your yard without enough disinfection. Usually the tube ran dry or the tablets bridged. Our guide to aerobic septic chlorine tablets covers what to buy and why pool tablets don't belong in there.^source

The tag on your control panel

Every aerobic system under contract should have a maintenance tag on the outside of the motor cover, control panel, or breaker box. Texas rules make the provider put it up at the start of each contract and mark it at every visit, including visits in response to your complaints.

The tag has to show the provider's name, their phone number, and the contract start date, and it gets punched or marked in permanent ink with the date of each check. Kaufman County's own page puts it more simply: your maintenance company must sign and date your tag at each visit.

The tag is your fastest audit. Look at it now. If the last mark is more than four months old, a visit was missed. If there's no tag, or it shows a company you don't have a contract with, call your provider.

What should an aerobic inspection report say?

A complete report follows the state's sample record, and the licensed maintenance provider has to sign it. The rule says one copy stays with the provider, one goes to the county, and one goes to you. In Kaufman County, you should get yours within 14 days of the inspection.^source

Here's what each part of the sample report covers and what a weak one looks like. A report doesn't have to use the state's exact form, but it should carry the same information.

How to tell a drive-by visit from a real inspection

A drive-by is a visit where the tag gets marked and a report gets filed, but nobody really opened the system. It happens. Aerobic systems are spread across FM roads and subdivisions from Forney to Kemp, routes are long, and a provider who's behind can be tempted to punch tags and move on.

There's no official minimum visit length, and we won't invent one. But a real inspection means lids come off, a sample gets drawn, the spray gets run, and the alarm gets tested. That's not a two-minute stop. These are the signs worth watching, and if they keep showing up, it may be time to compare providers through our aerobic septic maintenance page.

• You never hear the alarm tested, and the heads never run during a daytime visit.
• Lids and the chlorinator cap look untouched: same leaves, same dirt line, same ant trail across the seam.
• The chlorine result says 'OK' or is blank instead of showing a number.
• Every report for two years reads the same, word for word, with every item operational, even though you had an alarm and a pump replaced.
• Reports arrive late, only when you ask, or not at all.
• The tag is marked, but the date doesn't match anything on your camera, doorbell, or gate log.
• Your chlorinator is empty right after a visit that says the chlorine supply was fine.

What happens when the inspection finds a problem?

When an item is marked inoperative, the repair is on the owner. TCEQ's guidance says the maintenance provider inspects, tests, and tells you when faulty parts need repair; the contract usually doesn't pay for the part. Ask for the repair scope and price in writing, with a photo if it's a big one.

Some repairs are routine maintenance under Texas rules, such as replacing an aerator, pump, float, or valve, and don't need a permit. A few, like replacing a chlorinator or a cracked lid, fall under the emergency repair rule and have to be reported to the county in writing within 72 hours. Anything that changes the system's design needs a permit. If a repair quote seems high, get a second opinion from another licensed provider before you approve it.^source

A failed aerator is the most common big finding. Our guide to aerobic air pump failure symptoms and cost covers what that repair usually involves.

Can an aerobic system be inspected only twice a year?

Under state rules, sometimes. 30 TAC 285.7(e)(3) lets the number of required tests drop to two a year on systems with electronic monitoring that automatically calls or radios the provider about component failures and also monitors the disinfection level.

Kaufman County's order is written more simply: maintenance inspections shall be performed every four months. It doesn't carve out monitored systems. If a provider offers a two-visit plan because your system has a monitor, ask Development Services whether they accept it before you sign, and get the answer in writing.^source

What a routine visit doesn't cover

Routine visits check the system and keep it running. They usually don't include the things that cost real money. Knowing which is which keeps the first bill from being a surprise.

Contract terms vary, so treat this as a list of questions, not answers. Our aerobic maintenance contract pricing guide shows typical Kaufman County prices for each.^source

• Tank pumping. The inspection measures sludge; pumping is a separate job when it's high.
• Parts. Aerators, pumps, floats, timers, and alarm panels are usually billed on top of the contract.
• Chlorine tablets. Some contracts include them, some don't. The contract has to say who maintains the disinfection unit.^source
• Extra trips. Complaint calls between routine visits may cost extra, though the contract must state a response time.
• The county's $25 yearly renewal fee. Ask whether the provider includes it.

Keep your inspection records

Keep every report, not just the latest one. The county has copies, but a buyer's inspector, a lender, or a new maintenance provider will ask you first, and a folder of three reports a year tells a clearer story than anything you can say.

Save the contract, each report, repair invoices, and a photo of the tag once a year. When you sell, those records answer most of the buyer's septic questions before they're asked. Our guide to selling a Kaufman County home on septic covers what buyers usually request.

This page covers routine maintenance inspections. A one-time inspection for a home sale is a different job with a different scope; that's covered in what a septic inspection covers in Kaufman County.