Vent piping should be sized to allow rapid equalization of air pressure in the well. The cap, casing cover or sanitary seal should be self-draining and overlap the top of the pitless adapter casing with a downward flange. A modern well is drilled or dug with machines, and might go several hundred feet down into the ground. Dewatering wells, irrigation wells, heating and cooling supply and return wells, temporary service wells, construction water wells, process wells, and other structures for withdrawing ground water or lowering of a water table, regardless of location, length of intended service, or original use or intent, should be constructed in accordance with these standards.
CDC is not responsible for Section 508 compliance accessibility on other federal or private website. More IN. The return pipe should discharge at least 5 feet below static water level in the return well.
As a result, owners of private wells are responsible for ensuring that their water is safe from contaminants. Mix the calculated amount of chlorine in about 10 gallons of water. A well can easily be contaminated if it is not properly constructed or if toxic materials are released into the well.
An Unseen Threat Water Wells: Screen is available in many materials, the most popular being stainless steel and slotted PVC pipe. In a rock well, the annular space between the casing and the drill hole should be sealed to a sufficient depth to prevent surface drainage water, or shallow subsurface drainage, from entering the hole.
The bore of the hole should be sufficiently plumb and straight that the casing will not bind as it is installed. Sealing of wells presents a number of problems, dependent on construction of the well, the geological formations it penetrates, and hydrologic conditions. All private well construction is based on establishing the right location for the well, sizing the system correctly and choosing the proper construction techniques.
Ground Water and Wells When rain falls, much of it is absorbed into the ground. Further, the pump should be mounted on a base plate or foundation in a manner that will prevent dust and insects from entering the well.
The finished well casing or pitless adapter should extend at least 1 foot above the ground level or 2 feet above maximum flood level as determined by the Indiana Department of Natural Resources , whichever is higher.
When there is less overburden and deeper strata will not produce potable water, the sub-standard quality of the well must be recognized. Grout is a sealant that is used to fill in the spaces around the outside of the well.
Private water supply wells and buried suction pipes serving a residence should be installed the following minimum separation distances from potential sources of contamination:.
Pit privy a privy that has brick-, block-, or stone-lined pit walls ; manure pile; manure holding tank; silage pit; dry well; seepage pit or trench; or cesspool.
The top of this well casing sticks up above the ground, and a metal cap is put on top, so that surface run-off and dirt can't get in. Buried suction pipes should be located in accordance with Section 1.
A pitless adapter provides a vent, electrical, and discharge pipe connections while preventing contaminants at or near the surface from entering the well. No well or well-like structure may be used for the disposal of sewage, waste, or drainage or other material that might contaminate potable water.