Septic Repair

The parts that wear out

A septic system is mostly concrete, plastic pipe and stone, but a few components take a beating. Sewer gas eats at concrete, roots search out joints, frost heaves pipes, and anything electrical eventually quits. Septic repair covers those parts, and it is usually far cheaper than letting a small failure spread to the leaching bed. If the system is new to you, the guide to how a septic system works shows where each part sits.

Baffles

Baffles are the tees or walls at the tank inlet and outlet. The inlet baffle slows incoming waste and pushes it down; the outlet baffle keeps the floating scum from leaving the tank. Concrete baffles in older tanks often crumble from hydrogen sulphide corrosion. When the outlet baffle is gone, scum flows straight to the bed and shortens its life dramatically. Replacement means pumping the tank and fitting a PVC tee or a new effluent filter housing on the outlet.

Risers and lids

Many older tanks have lids half a metre or more underground. A riser is a plastic or concrete extension bolted or grouted onto the tank opening and brought up to grade with a secured, child-safe lid. It makes pumping cheaper and faster, and lets you check the effluent filter yourself. Cracked or rotted lids are a safety hazard and should be replaced immediately; a person or pet falling into a septic tank can die from the gases inside.

Pipes between the house and the bed

The building sewer from the house to the tank and the line from the tank to the bed can crack, separate at a joint, sag into a belly, or fill with roots. Symptoms include backups in the lowest drain, wet spots between the house and tank, or a tank that is low on liquid when it should be full. A camera run, covered on the septic line jetting and camera inspection page, finds the exact spot so only a short section is dug up.

Where the system has one, the distribution box splits effluent among the bed runs. If it tilts or settles, one run gets everything and fails early. Re-levelling or replacing the box is a modest job compared with the bed it protects.

Effluent pumps and high-water alarms

Raised beds and beds uphill from the house rely on an effluent pump in a separate chamber. Floats switch the pump on and off, and a high-water alarm sounds if the level rises too far. When the alarm goes off, cut water use right away and call. Common faults are a seized pump, a float stuck by debris, a tripped breaker or a failed check valve. A replacement pump is usually sized to match the original design head and flow, and the contractor tests the floats and alarm before leaving.

Replacing a septic tank

A tank that is cracked through, collapsing, made of rusted steel, or far too small for the house gets replaced. Concrete tanks are heavy, durable and resist floating; polyethylene tanks are lighter to deliver to awkward sites and do not corrode, but they must be set and backfilled carefully and are more prone to lifting in high groundwater. The installer picks based on access, soil and water table. A tank replacement needs a permit from the building department that handles sewage systems in your area, and the new tank must meet current Building Code sizing, which may make it larger than the old one. Smaller like-for-like fixes such as a baffle or riser often do not need a permit, but ask the contractor about local practice.

What affects the price

Depth and access matter on almost every repair. A baffle is cheap when the lid is at grade and slower when the contractor has to dig, pump, and work through a narrow opening. Pump repairs depend on the pump model and whether wiring or the control panel also needs work. Tank replacement depends on size, material, machine access and how the old tank is removed or abandoned. The septic system cost guide puts repairs alongside full replacement costs.

Ontario rules worth knowing

In Ontario, businesses that install, repair or service septic systems are expected to be registered with the province and to have staff holding the sewage system qualification. A permit covers larger work, and the inspector may need to see it before it is buried. The guide to Ontario septic system rules has more on who regulates what.

Before you call

• Note what you are seeing: alarm, smell, slow drains, wet ground, and when it started.
• If the alarm is sounding, silence it but do not switch off the pump circuit unless told to.
• Find the last pump-out date and any drawings.
• Keep heavy water use to a minimum until someone has looked.

How we help

Septic Hamilton does not do repairs ourselves. Request septic service and describe the problem, and we send it to one licensed contractor serving your area, from Stoney Creek to Brant County. They call to ask follow-up questions, quote the repair, and book it.