The most common warning signs
- Drains slowing down in more than one sink, tub, or shower at the same time
- Gurgling sounds from drains or toilets after you run water
- Sewage odors near the tank, over the drain field, or inside the house
- Standing water or soggy, spongy ground over the drain field when it hasn't rained
- A patch of grass over the drain field that's noticeably greener or faster-growing than the rest of the yard
- Sewage or dark water coming up in the lowest drains, such as a basement floor drain or a tub
Why a full tank causes trouble
Every time water leaves the house, solids settle at the bottom of the tank and grease floats to the top. Over the years that layer takes up more of the tank, leaving less room for wastewater to settle. Left long enough, solids start flowing out to the drain field, where they can clog the soil. Pumping the tank is routine. Repairing or replacing a clogged drain field is not.
Warning sign or emergency?
Sewage backing up into the house or pooling on the ground is urgent. Stop using water and request emergency septic service. Slow drains, odors, or a soggy patch over the drain field are reasons to book septic tank pumping soon, before they turn into a backup.
What you can do in the meantime
- Spread out laundry over the week instead of doing several loads in one day
- Fix leaking faucets and running toilets, which add water to the tank all day
- Keep grease, wipes, and other non-flushables out of the system
- Keep cars, trailers, and heavy equipment off the drain field
How to stay ahead of it
The U.S. EPA's general guidance for a typical household is an inspection about every three years and pumping every three to five years. Keep a note of when your tank was last pumped, since it's the first thing a provider will ask. Indiana has no statewide pumping mandate, but some counties set their own rules. Our Indiana septic regulations guide explains where to check for your property.