The water comes back every storm. So does the guy who never finished.

Standing water and a wet basement are a grading and discharge problem before they are a French drain problem. We diagnose where the water actually goes, price the fix as one fixed number, and finish the scope we signed.

Sump Pump Installation Cost in Edwardsville, IL

Direct answer: A straight pump replacement in an existing pit is a few hundred dollars of hardware and an hour or two of labour. Cutting a new pit into a slab, tying in drain tile, and running a discharge line is a different job entirely, usually a few thousand. The number that decides which one you are buying is whether a working pit already exists — so establish that before comparing any quotes.

What sump pump installation cost actually covers

A replacement is pump, check valve, and connection. A new installation is excavation through the slab, a pit and liner, a gravel bed, the discharge line out through the rim or wall, and an electrical circuit — plus the drain tile tie-in if the system is being fed by a perimeter drain rather than by groundwater alone.

The discharge line matters more than most quotes suggest. If it returns water to the soil beside the house, the pump is recycling its own work, and the pit will refill faster than the site conditions alone would explain.

Sump pump installation cost by scope

Scope	Cost range	Timeline
Pump swap in an existing pit	$450 – $1,100	Same day
New pit cut into slab + discharge	$1,800 – $3,800	1 – 2 days
New pit + interior drain tile tie-in	$5,500 – $11,000	3 – 5 days
Battery backup system added	$700 – $1,900	Same day

Edwardsville and Madison County. Finished basements and long discharge runs push the ranges up.

Sizing, float height, and the mistake that burns out pumps

Bigger is not automatically better. A pump that empties a small pit in seconds short-cycles, and short-cycling is what kills pumps early. Pit volume, pump capacity, and float height have to be matched to each other rather than picked off a shelf.

Float height is the specific detail worth arguing about. If the float sits below the natural water table, the pit refills to that line no matter what the pump does — a homeowner running through a pump every couple of years described exactly this, and the fix was the setup, not a stronger pump.

Backup power, and what a failed pump actually costs

The worst storms are the ones that take the power with them, which is precisely when the pump is needed. A battery backup or water-powered backup is the cheapest insurance in the category, and it is the line most often cut to make a bid look competitive.

The arithmetic is not subtle. A finished basement taking several inches of water in a single storm is a restoration bill, not a plumbing bill, and homeowners policies frequently exclude groundwater intrusion unless a water backup endorsement is in place.

Sump pump installation cost questions

How much does sump pump installation cost?

Swapping a pump in an existing pit typically runs $450 to $1,100 in this area. Cutting a new pit into a slab with a discharge line runs $1,800 to $3,800. A new pit combined with an interior drain tile tie-in is a larger job, generally $5,500 to $11,000, and a battery backup adds $700 to $1,900.

Do I need a new pit or can the pump just be replaced?

If a properly sized pit with a sound liner and a clear discharge line already exists, a replacement pump is the whole job. A new pit is needed when there is no pit, when the existing one is undersized enough to make the pump short-cycle, or when the system is being fed by new interior drain tile that has to terminate somewhere.

Is a battery backup sump pump worth it?

For a finished basement it is the highest-value few hundred dollars in the system, because the storms most likely to overwhelm a pump are the storms most likely to cut power. It is also the line most commonly removed to make a bid look cheaper, so check whether a lower quote has simply dropped it.

How long does a sump pump last?

Seven to ten years is typical for a pump that cycles normally. Pumps that fail every two or three years are usually being asked to short-cycle or to run continuously, which points at pit size, float height, or a discharge line returning water to the soil next to the foundation rather than at the pump itself.

What we put in writing before anyone digs

Fixed-price written quote before we break ground. Trenching turns up surprises; the price does not move because of them unless you approve a change order in writing first.
Zero-obligation site visit. If the honest answer is that the water is doing what water should do and you do not need a drain, that is the answer you get, in writing, at no cost.
The diagnosis names where the water comes from before it names the product. Grading, downspout discharge, and the water table get checked first; a French drain is a conclusion, not an opening bid.
Full-width trench, wrapped stone, and rigid perforated pipe as standard. We do not install narrow single-pipe trenches or pre-socked corrugated sections, because those are the installs that fail in year three.
Itemized scope showing linear feet, trench depth, stone volume, and discharge point as separate lines. No lump-sum 'drainage work.'
A named discharge point on the plan, with the permit or easement dependency listed separately so you can see which clocks we do not control.
If the system does not move water after the first heavy rain, we come back and correct it at our cost, not yours.