How to choose a septic system company you can trust

The right septic company for you holds the license your state requires for the work, gives you a written quote that spells out what is included, and leaves a written report after each visit. Start by matching the company to the job, since pumping, inspection, repair, and installation are often separate licenses. Then compare at least three quotes and ask the questions below before anyone opens your tank.

Pumping, inspection, repair, or installation: which company do you need?

“Septic system services” covers several different trades. Some companies do all of them, and some do only one. Knowing which you need keeps you from paying an installer’s rates for a routine pump-out, or trusting a pumper with a job that needs a designer.

Type of company	What they do	When you need them
Pumper or hauler	Pumps the tank, cleans the effluent filter, checks baffles, hauls septage	Routine pumping every few years, or a full tank
Inspector	Evaluates the tank, drain field, and parts, and writes a report	Buying or selling a home, or a suspected problem
Maintenance or service provider	Services aerobic treatment units and other systems with pumps, blowers, and alarms	Ongoing service on an alternative system
Repair contractor	Replaces baffles, lids, pumps, pipes, and distribution boxes	A specific failed part
Designer or installer	Designs and builds new systems or replaces drain fields	New construction or a failed system

Minnesota’s licensing system shows how separate these can be. The Minnesota Pollution Control Agency licenses septic businesses by specialty, including design, installation, maintenance (which covers pumping), inspection, and service, and each licensed business must employ at least one certified person in each specialty it offers. Penn State Extension makes a similar point for Pennsylvania: some pumpers check baffles and filters, but a full inspection is a separate service that takes more training and certification.

If you need a full evaluation, see our guide to septic inspection. If you just need the tank emptied, our septic tank pumping guide explains what a good pump-out includes.

Check licensing first (it varies by state)

There is no national septic license. Each state, and sometimes each county, sets its own rules. A few examples:

• Minnesota requires a state license for every private business that designs, installs, maintains, inspects, or services septic systems, along with a surety bond and liability insurance, renewed each year.
• Virginia guidance from Virginia Cooperative Extension says to use a licensed service with a state permit to haul and dispose of septage.
• Georgia public health offices keep a list of certified pumpers.
• Texas requires aerobic treatment units to be maintained by a licensed maintenance provider during the initial service period.

The simplest way to check is to call your county or local health department. Ask what license or certification the job requires and whether they keep a list of licensed companies. Then ask the company for its license number and confirm it. Proof of liability insurance is worth asking for too, since the crew will be digging and driving a heavy truck on your property.

Questions to ask before you hire

A Georgia public health district (serving Gwinnett, Newton, and Rockdale counties) publishes a short list of questions for homeowners to ask septic pumpers. Their list, plus a few drawn from extension guidance, makes a good script for the phone call:

1. What is the price to pump out the tank? If it has two compartments, are both included?
2. Does the price include the disposal (dump) fee?
3. Is there an extra charge for a long hose run?
4. Do you charge to find or uncover the lids? Per lid, or per foot of digging?
5. Does the price include checking the inlet and outlet baffles?
6. Does it include cleaning the effluent filter, if there is one?
7. Is there an extra fee if the tank has not been pumped in a long time?
8. What do you charge to replace a baffle, a lid, or a filter?
9. Will you pump through the main access opening? (Penn State and Oregon State say pumping through the small inspection ports can damage the baffles.)
10. Will I get a written report with the sludge and scum levels you measured? (The EPA recommends keeping these records.)

Write each company’s answers side by side. It makes the real price differences obvious.

Get written quotes and compare them fairly

Virginia Cooperative Extension recommends getting several estimates and asking exactly what each charge covers, because prices vary a lot. The Georgia health district recommends contacting at least three certified pumpers.

A low base price can grow once digging, hose, disposal, and filter fees are added, so compare the total for the same scope of work. For context, This Old House puts the national average for pumping at about $420, with most homeowners paying $290 to $560, and says emergency or weekend calls can cost 50 to 100 percent more. Our septic pumping cost guide breaks prices down by tank size.

For repairs or a new system, insist on a written quote that lists the work, the parts, who pulls any permits, and what is warranted. Permits and inspections for repairs and new systems are handled by your state or county, so ask the company to confirm the permit is in place before work starts.

Red flags when hiring a septic company

None of these proves a company is dishonest, but each is worth a second look or a second opinion.

• Pushing additives as a substitute for pumping. Ohio State Extension says additives cannot replace pumping, and the Georgia health district does not recommend them at all.
• No license number, or one that does not check out with your state or county.
• No written quote, or a price that only covers “pumping” with everything else left vague.
• Pumping through the inspection ports instead of the main opening.
• No measurements and no report. If they cannot tell you how full the tank was, you cannot plan the next pumping.
• A big repair or full replacement recommended on the spot without showing you the problem, photos, or a written explanation. Get a second opinion before you agree to major work.
• Asking someone to climb into the tank. Ohio State and Oregon State Extension both warn that septic tank gases can kill within minutes. Work should be done from outside the tank.

Service contracts for aerobic and alternative systems

If you have an aerobic treatment unit (ATU) or another system with pumps, blowers, floats, or alarms, a service contract is the norm. The EPA says alternative systems with mechanical parts should be inspected about once a year and that a service contract is important for them.

Some states make it mandatory. In Texas, the owner of a new aerobic system must sign a two-year initial maintenance policy with a licensed maintenance provider before the system is approved for use. The provider tests the system and sends reports to the owner and the permitting authority within 14 days of each visit. After the first two years, the owner of a single-family home may choose to maintain the system personally instead of renewing the contract.

When comparing contracts, ask:

• How many visits per year, and what is checked at each one?
• Are pumping, parts, and chlorine or other disinfectant included, or billed separately?
• How fast will they respond to an alarm, and is there an after-hours fee?
• Do they file any reports your county or state requires?

Our guide to types of septic systems explains how ATUs and other alternative systems work.

When to call right away

Do not wait for a routine appointment if a septic alarm is sounding, sewage is backing up into the house, or the ground over the tank or drain field is soggy or smells of sewage. Those call for a licensed septic professional promptly. Keep people and pets away from any wet area, and do not open the tank yourself.

Finding septic system companies near you

Your local health department is the best starting point for a list of licensed companies. Neighbors on septic can tell you who shows up on time and leaves a report. When you want to compare prices, you can request quotes from local septic pros and use the questions above to compare them on the same terms.