Septic tank cleaning isn’t a glamorous topic, but it’s one of the most important home maintenance tasks you’ll face. While maintaining other aspects of your home is just as important, they’re not quite so… nasty when the mess builds up and spills over. Taking care of your septic system prevents backups and expensive repairs. Let’s talk about how your system works, when and how to clean your tank, and what you should be doing to keep it running efficiently for years to come.
How It all Works
Before we get to our main topic, let’s refresh on how, exactly, a septic system works. Your typical residential septic system is going to contain a septic tank, inlet/outlet pipes, baffles (which prevent things from escaping the tank), and a drain field. The way all these parts work together goes like this: first, wastewater flows from your home into the septic tank. There, solids sink to the bottom while oils float on top. Liquid wastewater exits the tank into the drainage field, leaving all the scum behind and refreshing the soil once more. It’s an efficient system, but it doesn’t sustain itself. Eventually, the tank needs to be emptied of all that residue. But how do you do it?
Septic Tank Cleaning
1. Locate the Septic Tank
Most tanks are buried 12–24 inches below ground. If unsure, a local septic service provider like Goebel Septic Services can locate it for you.
2. Inspect the System
This includes checking the tank, baffles, drain field, and any perforated pipes for damage or blockages.
3. Measure Sludge and Scum Layers
Professionals use a sludge judge to determine how full your tank is and whether cleaning is needed.
4. Pump and Remove Waste
A vacuum truck is used to remove all liquid and solid waste from the tank (this is the heart of the cleaning process).
5. Rinse and Re-Inspect
After emptying, the tank is flushed and re-inspected for cracks, leaks, or baffle failure.
6. Document the Service
Keep a record of the cleaning date, findings, and any recommendations made by the technician.
When to Clean Your Septic Tank
General Guidelines Based on Usage and Tank Size
The timeline for cleaning really varies from lifestyle to lifestyle, but for a general frame of reference, a family of four with a 1,000-gallon tank should pump their septic tank every 3–5 years. Smaller tanks or homes with high water usage may need more frequent attention.
Other Signs to Look out For
Even if you’re within the recommended timeline, physical symptoms (like odors or backups) should never be ignored.
Ideal Seasons for Cleaning
Late summer to early fall is often best. Dry ground makes access easier, and you’re preparing for winter when backups can be harder to manage.
Can You Clean a Septic Tank Yourself?
Short answer: No. DIY septic tank cleaning is not advised. It requires specific tools, safety training, and knowledge of disposal laws. Unless you happen to have experience, training, a vacuum pump truck, personal protective equipment, and scum and sludge measuring tools, it’s probably best to leave it to the pros.
What to Put in Your Septic Tank (and What to Avoid)
Are Septic Additives Like Ridex Necessary?
Products like Ridex can help to maintain bacterial balance, but should never replace regular pumping. They are optional and, to be honest, very much a subject of debate among professionals.
Natural Maintenance Tips
- Conserve water to reduce tank load
- Use septic-safe toilet paper and cleaners
- Install filters on washing machine and kitchen drains
What to Avoid
- Harsh chemicals and antibacterial products
- Oils, grease, and non-biodegradable items
- Excessive use of a garbage disposal
How Much Does Septic Tank Cleaning Cost?
The cost to pump a septic tank varies widely, but for the most part lies within these price ranges:
| Tank Size (Gallons) | Average Costs |
| 1,000 | $300–$500 |
| 1,500 | $400–$700 |
| 2,000+ | $600–$900+ |
Additional charges can crop up, for instance if the crew has to find an unmarked tank or dig to access it, but for the most part, these are estimates you can build off of.
Signs Your Septic Tank May Be Due for Cleaning
- Toilets or sinks draining slowly
- Foul odors around your yard or drains
- Gurgling noises in plumbing
- Water pooling near the drain field
- Sewage backup
Final Thoughts
Maintaining your septic system doesn’t need to be stressful or expensive—it just needs to be consistent. A properly cleaned and maintained tank protects both your wallet and the environment. For homeowners in Olympia, the wet soil and terrain only increase our need to spare our septic systems some attention.
Why You Can Trust Goebel Septic Services
Goebel Septic Services has served Olympia and Western Washington since 1979. Family-owned and operated, we’re known for being fast, friendly, and fair. Our technicians are trained, punctual, and committed to getting the job done right.
Whether you need a routine tank clean, emergency pumping, or a full system inspection, we’re here to help.g your property for a wet winter, or simply staying ahead of routine maintenance, we’re here to help.