Start with records: old pumping receipts, home sale paperwork, or permit records from Kern County Environmental Health. Then look for clues in the yard, such as a cleanout pipe, a riser, or a spot where grass grows differently, and follow the direction of the main sewer line out of the house. If you still cannot find it, a septic provider can locate it for you.
Why finding the lid matters
Every pumping starts with access to the tank. If nobody knows where the lid is, the crew has to find it and dig to it, which adds time and can add cost. Many older septic homes around Bakersfield, Oildale, Lamont and Arvin have tanks with no risers and lids buried under soil. Homes change hands, records get lost, and landscaping covers old clues. Knowing your lid's location saves time on every future visit.
Step 1: Check your paperwork
- Old pumping receipts. Many providers note the tank location or draw a quick sketch.
- Home sale documents. Inspection reports and disclosures may describe the system.
- Ask the previous owner or neighbors who have lived there a long time.
- Permit records. Kern County Environmental Health oversees septic systems in unincorporated areas and may have records or as-built drawings for your property. Cities may keep their own records. Contact the agency directly to ask what is available for your address.
Records are not always complete, especially for older systems, but they are the fastest place to start.
Step 2: Look for clues in the yard
- A riser or green or black plastic lid at ground level. Some tanks already have risers.
- A cleanout pipe, usually a short capped pipe near the house where the sewer line leaves.
- A rectangular patch where grass grows differently, either greener or thinner, because of the tank below. In Bakersfield's dry summers, these differences can be easier to spot.
- A slight depression or mound in the yard.
- Areas where nothing is planted and no concrete was poured, which is common over tanks.
Step 3: Follow the sewer line
Find where the main sewer line leaves the house, often on the side with the bathrooms, kitchen or laundry. The tank is commonly located a short distance from the house in that direction, often somewhere around 5 to 15 feet out, though it can be further on larger lots. Walk out from that point in a straight line and look for the clues above.
Some homeowners use a thin metal probe to gently feel for the top of a concrete tank under the soil. If you try this, go slowly and be careful, because you could hit a pipe. Before any digging, call 811 so underground utilities can be marked. Never dig near buried gas or electric lines.
Step 4: Know the layout of a typical tank
Many residential tanks are rectangular. The lid or lids are often near the ends of the tank, one over the inlet and one over the outlet, and sometimes one in the middle. Two-compartment tanks may have multiple lids. If you find one lid, there may be another a few feet away.
Local soil and digging conditions
Kern County soils vary. Some areas on the valley floor have sandy or loamy soil that is easier to dig. Other areas have clay-heavy soil or hardpan layers that are tough to dig, especially when dry in late summer. Foothill areas such as Tehachapi can be rocky. Ground that has been baked by months of heat can be very hard, so digging to a lid can be slow work. That is part of why providers may include locating and digging in a quote.
Safety first
- Never open a septic tank lid yourself. Tanks can contain dangerous gases, and an open tank is a serious fall hazard.
- Do not let children or pets near an exposed lid.
- If a lid is cracked, damaged or loose, keep people away and tell the provider. A damaged lid should be repaired or replaced.
- Call 811 before digging.
When to let a provider find it
If records do not help and the yard gives no clues, a septic provider can locate the tank. Providers may use probes, follow the sewer line from a cleanout, or use other locating tools. Ask about this when you call so it can be factored into the visit. For a general sense of time, see how long septic pumping takes, and for cost factors see septic pumping costs.
Make it easier next time
- Ask the provider to sketch the tank location with measurements from fixed points like corners of the house.
- Take photos of the exposed lid with landmarks in the frame.
- Consider a riser so the lid sits at ground level.
- Keep the information with your home records and pass it on if you sell.
Ask the provider whether adding a riser needs any permit; in unincorporated areas, Kern County Environmental Health is the agency to check with.
Do you need to be home?
If the lid location is unknown, it helps to be there to share what you know. Our guide on whether you need to be home during pumping has more detail.
Get help locating and pumping your tank
Call (661) 320-8662. We connect you with local septic providers serving Bakersfield, Oildale, Rosedale, Shafter, Lamont, Arvin, Tehachapi and nearby communities. Tell them you need the tank located, and they can explain how they handle it and give you a quote before any work starts.
Frequently Asked Questions
How far from the house is a septic tank?
It is often a short distance from where the sewer line leaves the house, commonly around 5 to 15 feet, though it can be further on larger lots.
Can Kern County tell me where my tank is?
Kern County Environmental Health may have permit records for your property. Contact them directly to ask what records exist.
Is it safe to open the lid myself?
No. Septic tanks can contain dangerous gases and are a fall hazard. Leave opening the tank to the crew.
Should I call 811 before probing or digging?
Yes. Calling 811 before any digging helps avoid buried utility lines.