Water Wells

Reynolds Well Drilling specializes in large diameter bored wells constructed of 30 inch fiberglass casing.  

Large diameter wells take advantage of slow producing aquifers that are prevalent in Central, North Central and Eastern Illinois by making a large reservoir capacity available.  This reservoir can then be pumped when needed and can recover in the interim.  These wells are also excellent in higher producing formations.  Bored wells are also recommended when there is no deep water, or when the deep water contains unacceptable amounts of minerals and gasses such as methane, sulfur, iron, calcium, etc.


Reynolds has led the industry in Central Illinois by offering fiberglass casing since July of 2000. The casing is manufactured by GP Fiberglass in Saskatchewan, Alberta, Canada, where it has been in use for many years. You can contact their National Sales Manager, Mr. Dale Klassen at (403) 990-1324, and/or click on the link provided to view their web page.

Tile wells vs. Fiberglass wells

There are many advantages to using fiberglass casing as opposed to the old industry standard of concrete tiles:

Tile wells are open bottom, frequently allowing fine silts and sands to heave up into the well causing reduced capacity, turbidity in the water from particles in suspension. These fine silts and sands can even reach the pump or foot-valve and can cause a shut-down of the well and damage to the pump.  In contrast, fiberglass casings have a bottom cap, which alleviates these problems.

Water intake in a concrete tile well is through the open bottom and through the joints between each tile, leaving few options to maximize efficiency.  The fiberglass casing is slotted in the field by the drilling crew so that the amount and location of the slots is optimized to the formations encountered while drilling the well, creating a conventional casing / screen well design.

When drilling an open borehole and setting concrete tiles, it is difficult or impossible to drill below a caving formation, which is usually the water-bearing zone of sand and gravel.  Consequently, the well can't be drilled much below the uppermost water bearing zone.  This is due to the length (3 feet) and weight (800+ pounds) of the tiles, and the difficulty of setting them under water.  By contrast the fiberglass casing is 25 feet long and weighs only 400 pounds.  Using fiberglass casing and a "flood drilling" method which holds the borehole open with hydraulic pressure we can usually drill through the caving zones and set the casing to the bottom, which produces more reservoir and frequently intercepts a second producing zone of water.  

The casing is approved by the Illinois Department of Public Health for use in potable water supplies, and carries the NSF (National Sanitation Foundation) seal.