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How Much Does Dry Well Installation Cost?

The average cost of a drywell ranges from $2295.70 to $3134.83. This usually includes a 700-gallon concrete dry well and professional installation.

Drywell construction costs may vary depending on the size of drywell you need.
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Estimated Dry Well Installation Costs
Albany, NY$2378.20 - $3243.00
Charlotte, NC$2050.40 - $2796.00
Colorado Springs, CO$2041.60 - $2784.00
Columbus, OH$2024.00 - $2760.00
Houston, TX$2028.40 - $2766.00
Irvine, CA$3069.00 - $4185.00
Las Vegas, NV$2241.80 - $3057.00
Miami, FL$2332.00 - $3180.00
Saint Louis, MO$1988.80 - $2712.00
Seattle, WA$2670.80 - $3642.00
Tulsa, OK$1944.80 - $2652.00
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Factors that may affect the cost to build a dry well:

1. Dry well size

How does a dry well work? A dry well collects rain water into its tank, and then slowly drains the water back into the soil through drainage holes all around the tank. A dry well should be able to drain all of the water it collects back into the surrounding soil within 72 hours. If you live in a geographic area with a lot of rain, you may need a larger dry well. Your local contractor can help you figure out what size dry well is best for your situation.

Concrete dry wells come pre-cast in various sizes, such as 500 gallons, 700 gallons, 1000 gallons or 1500 gallons. Larger dry wells are typically more expensive.

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2. Soil condition

Dry well installers will consider how many hours take them to complete the job when pricing out their quote. If your soil contains a high amount of clay, tree roots, or other obstacles, it may be more difficult for a contractor to dig a trench for the dry well. The longer it takes to dig the trench, the more you can expect to pay.

On a related note, be sure that your contractor performs a percolation test of the soil to make sure a dry well will actually work in that location. Dry wells are ideal for soil that drain well, such as sandy soil.

3. Additional dry wells and drainage

If you have water pooling in more than one area of your yard, you may need to install more than one dry well. Also, if you have problems with too much water around the perimeter of your foundation or basement, you may need to install a more extensive drainage system. A drainage expert can help you figure out the best solution for your yard. For example, you may need to put in a french drain.

4. Location

The cost to build a dry well varies a little bit depending on where you live. In more expensive areas (usually large cities), dry well construction is pricier due to higher labor costs. Be sure to get several quotes for your dry well project in order to best understand competitive dry well construction costs in your area.

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