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Reviewed by Marcus AldridgeSenior Editorial Reviewer — Plumbing, HVAC & Wet Trades

Wie te bellen · Plumber

Septic tank backing up? Dit is wie je moet bellen

A septic tank backup occurs when the underground tank that collects and treats household wastewater becomes full, clogged, or overwhelmed, causing sewage to reverse flow into the home through drains and toilets. This is both a health hazard and a property emergency. Causes include infrequent pumping (most tanks need pumping every 3–5 years), excessive water use overwhelming the drain field, flushing non-biodegradable items, tree root intrusion into pipes, or a failing drain field that can no longer absorb effluent. Warning signs often appear gradually — slow drains throughout the house, sewage odors in the yard near the tank, and soggy patches of unusually green grass over the drain field. A licensed plumber or septic specialist can pump the tank ($300–$600), inspect the system with a camera ($200–$500), clear root intrusions, and assess whether the drain field needs repair or replacement ($3,000–$15,000 for a new field).

What's going on

How to fix septic tank backing up

Some "septic tank backing up" cases look simple, but getting it wrong almost always costs more than calling a pro: hidden leaks, fire risk, code violations, and insurance headaches. A licensed plumber will diagnose the exact cause, use the right professional tools, and stand behind the repair. Most local pros offer free quotes and can visit the same day or the next.

Who to call

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Symptoms to look for

  1. 01

    Multiple drains in the house are slow or backing up simultaneously

  2. 02

    Sewage or rotten egg smell in the yard near the septic tank or drain field

  3. 03

    Gurgling sounds coming from toilets or drains when water is used elsewhere

  4. 04

    Soggy, unusually green or lush patches of grass over the drain field area

  5. 05

    Sewage water backing up into the lowest drains like basement floor drains or ground-level bathtubs

FAQ

Frequently asked questions

Who should I call for: Septic tank backing up?

Call a licensed plumber. Plumbers have the specialized training, tools, and insurance to diagnose septic tank backing up safely and stand behind the fix. Most offer free quotes and can visit the same day or the next.

Can I fix this myself?

Some minor cases can be handled DIY, but most require a licensed plumber to avoid costly rework and safety risks. A free quote takes under a minute.

How fast can a pro come out?

Most plumbers offer same-day or next-day visits for non-emergency issues. True emergencies (burst pipes, gas smell, no heat in winter) are typically handled within 1–4 hours.

How much does it cost to fix?

Costs vary by severity and your location. Submit a free quote request to get real pricing from local pros in your area.

What are the signs of: Septic tank backing up?

Multiple drains in the house are slow or backing up simultaneously. Sewage or rotten egg smell in the yard near the septic tank or drain field. Gurgling sounds coming from toilets or drains when water is used elsewhere. Soggy, unusually green or lush patches of grass over the drain field area. Sewage water backing up into the lowest drains like basement floor drains or ground-level bathtubs.