Most Johnsonville homeowners arrive at crawl Space Drainage and Sump Pump Installation having noticed something else first: a smell, a soft patch in the floor, or insulation on the ground. The inspection decides whether this is the right stage to start at.
Water keeps coming back, so it needs somewhere to go rather than somewhere to sit.
Drainage and sump pump on lowcountry and coastal plain ground
Near Johnsonville a sump is often working against a standing water level rather than an occasional event, and close to the coast that level can be tidally influenced. The system has to be sized for water that keeps arriving, and the discharge has to go far enough that it does not simply return.
Low ground and a long wet season change what this work has to withstand around Johnsonville. Homes near King River Pond in particular tend to need the drainage question answered as well, or the space simply returns to how it was.
Johnsonville at a glance
| County | Florence County |
|---|---|
| ZIP | 29555 |
| Elevation | about 89 ft |
| Region | Lowcountry and coastal plain |
Named water nearby
- King River Pond (reservoir)
- Old River Lake (lake)
- Johnsville Country Club Lake (reservoir)
- Tie Lake (lake)
Signs you need this
- Water returns in the same place after every heavy rain
- A waterline or silt mark on piers or foundation walls
- Soil that stays soft or muddy long after the weather clears
- An existing pump that runs constantly or has stopped working
What the work involves
What we do on a Johnsonville job of this kind:
- Assessment of water source, arrival points and low spots
- Perforated collection pipe in a gravel bed
- Sump basin set at the low point
- Sump pump sized to the space, with check valve
Why it is worth dealing with now
The cost of this work does not stay flat. Every season a Johnsonville crawl space stays wet moves more of the job from drying towards framing repair.
The full method and the step-by-step for this work is on the Crawl Space Drainage and Sump Pump Installation page, and how it behaves across the state is on the Drainage and sump pump in South Carolina page.
Drainage and sump pump in Johnsonville: common questions
Does a sump pump need a backup here?
Worth considering if your Johnsonville crawl space takes water during storms, because storms are when the power fails — which is exactly when the pump is needed.
Can grading fix it without installing a pump?
Sometimes, and it is checked first because exterior water is the cheapest to deal with. Where the water table itself rises into the space, as it can around Johnsonville, it cannot.
What should I have ready when I call about my Johnsonville home?
Your street in Johnsonville, when you first noticed it, and what you can see or smell — standing water, a waterline on the piers, insulation hanging down, or a floor that has gone soft. Photographs help.
Do you work outside Johnsonville itself?
Yes. We cover Florence County broadly, including Hemingway, Stuckey and Gresham, and the rest of the Lowcountry and coastal plain of South Carolina.
Does being close to the coast make this worse?
It raises the water table and lengthens the wet season, which is why homes near King River Pond and the low ground around Johnsonville tend to need drainage as well as a barrier.
Can grading and gutters fix it without a sump?
Sometimes, and it is always worth checking first, because exterior water is the cheapest to deal with. Where the problem is surface runoff from a roof or a slope, fixing discharge and grade can be enough. Where the water table itself rises into the space, it cannot.
Drainage and sump pump near Johnsonville
We cover Johnsonville and the surrounding part of Florence County. The same service in nearby towns:
Other crawl space services in Johnsonville
Crawl Space Water Removal in Johnsonville
Standing water pumped and extracted from under the house, then the saturated material taken out.
Crawl Space Structural Drying in Johnsonville
Joists, girders and subfloor dried back to a measured target with air movers and dehumidification.
Crawl Space Mold Remediation in Johnsonville
Contained removal of mold-affected material, HEPA cleaning, and the moisture source shut off.
Crawl Space Vapor Barrier Installation in Johnsonville
Sealed polyethylene over the soil and up the piers, so ground moisture stops entering the space.
Crawl Space Wood and Subfloor Repair in Johnsonville
Rotted joists, girders, rim joists and subfloor sections repaired or replaced once the space is dry.
Or see everything we cover in our Johnsonville service area, and how this service works across the state on the South Carolina page.
Crawl Space Drainage and Sump Pump Installation in Johnsonville
Call (888) 724-1354 and tell us your street and what the space looks like. We will tell you whether this is the right stage to start at.
Tell us what you are seeing under the house and we will tell you what it needs.