What a septic inspection is (and isn't)
A septic inspection is a check-up of your entire onsite system. It answers one question: is this system working the way it should, and is anything about to fail?
It's different from a pump-out. A pump-out empties the tank. An inspection looks at every part of the system and how they work together. The two are often booked together, because an empty tank is much easier to examine.
It's also different from a general home inspection. A home inspector may note that a property has a septic system and flag obvious issues, but most don't open the tank, check the baffles or assess the drain field. If you want to know the septic system's condition, you need a septic inspection.
What gets checked
Every system is different, but a typical inspection covers:
- The tank. Sludge and scum levels, cracks, leaks, and whether the tank is holding the right liquid level.
- Baffles or tees. These keep solids in the tank and out of the field. Broken or missing baffles are one of the most common hidden problems.
- Effluent filter. If the system has one, it's checked and cleaned.
- Lids and risers. Condition, safety and access.
- Pump chamber, pump and floats on systems that use a pump.
- Alarm panel. Tested to make sure it actually sounds when it should.
- Distribution box and lines, where accessible.
- The drain field. Signs of surfacing effluent, soggy ground, odours or unusual plant growth.
You should get a written report that explains what was found and what, if anything, needs attention.
When to get an inspection
- You're buying or selling a home with septic. See our pre-purchase inspection page.
- You just moved in and have no records. You don't know the tank size, the last pump-out date, or where the lids are. An inspection gives you a starting point.
- Something seems off. Slow drains, gurgling, smells, soggy patches over the field, or an alarm.
- Your system is older and has never been checked. Many homes around Nanaimo have systems that predate BC's 2005 Sewerage System Regulation and may never have had a maintenance plan.
- You're planning a renovation or addition. More bedrooms or bathrooms can mean more wastewater than the existing system was designed for.
- Your maintenance plan calls for it. Systems with pumps or treatment units often need regular checks.
Who can inspect a septic system in BC?
Under BC's Sewerage System Regulation, maintenance on an onsite system is done by an authorized person. That means a Registered Onsite Wastewater Practitioner (ROWP), registered through the Applied Science Technologists and Technicians of BC (ASTTBC), or a professional engineer.
When you call our local line, you're connected with a qualified provider. Ask about their registration when you book. A good pro will be glad you asked.
What an inspection can save you
Septic problems are much cheaper early than late. A cracked baffle found during an inspection is a small repair. The same cracked baffle left alone can let solids flow into the drain field and clog it, and a failed field can be the most expensive repair on a rural property.
An inspection also gives you records. When it's time to sell, a recent inspection report and pump-out receipts make buyers more comfortable and can keep a sale on track.
How to get ready
- Find the lids if you can, or mark where you think the tank is.
- Gather any records: past pump-out receipts, permits, or the original system design. Island Health may hold records for systems filed after 2005.
- Make sure the area is accessible. Move vehicles, trailers or garden beds blocking the tank or field.
- Avoid running large loads of laundry right before the inspection, so the system reflects normal conditions.
Septic inspection FAQ
How long does a septic inspection take? It depends on the system and how easy the components are to reach. A straightforward residential system is often done within a few hours, longer if lids need to be dug up.
Does an inspection include pumping? Not always. Many inspectors recommend pumping at the same time so the tank's interior can be properly seen. Ask when you book.
Will an inspection tell me how long my drain field will last? No one can promise an exact lifespan, but an inspection can show whether the field is working now and whether there are early warning signs.
Do I need an inspection if the system seems fine? If you have no records and don't know when it was last checked, yes. Many septic problems stay hidden until they're expensive.
Is a septic inspection covered by the RDN rebate? The RDN's SepticSmart rebate has covered certain upgrades, like risers, effluent filters and distribution boxes, rather than inspections. Check the RDN's current rules.
What affects the cost of an inspection
Inspection pricing varies by provider and by system. The main factors:
- System type. A simple gravity system with a tank and field is quicker to check than a system with a pump chamber, alarm and pressurized field, or a treatment unit.
- Access. Buried lids have to be found and dug up. Tanks far from where a truck can park take longer.
- Pumping at the same time. Many inspections include or recommend a pump-out, which adds to the total but gives a far better look inside the tank.
- Report detail. A pre-purchase report for a buyer, realtor and lender is usually more detailed than a routine check.
- Location. Island properties involve ferry travel.
Ask for a quote that spells out what's included: digging, pumping, the drain field assessment and the written report.
What a good inspection report includes
A useful report is clear enough for a homeowner to understand. Look for:
- System type and layout, ideally with a simple sketch showing where the tank, lids and field are
- Tank condition: sludge and scum levels, baffles, cracks, leaks
- Component checks: filter, pump, floats, alarm
- Drain field observations
- Recommendations, ranked by urgency: what needs doing now, soon, or just watching
- Photos, where possible
Keep the report with your other septic records. It becomes your baseline for every future visit.
Inspection vs. maintenance: how often?
Your maintenance plan, if you have one, sets the schedule. As a general rule, systems with pumps, alarms or treatment units need more frequent checks than simple gravity systems. If you have no plan, an inspection is a good time to ask the authorized person to create one. See septic maintenance plans.
Book a septic inspection
Call our local line or use the quick quote form. Tell us where you are and why you want an inspection, and a registered local septic pro will get back to you with a quote.