Dug/Bored wells are feet in the floor dug through shovel or backhoe. They are lined (cased) with stones, brick, tile, or other product to stop collapse. Dug wells have actually a big diameter, space shallow (approximately 10 come 30 feet deep) and also are no cased continuously.

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Driven wells are constructed by steering pipe right into the ground. Driven wells space cased continuously and also shallow (approximately 30 to 50 feet deep). Though thrust wells room cased, they can be contaminated easily because they attract water native aquifers close to the surface. These wells draw water from aquifers near the surface.Drilled wells are built by percussion or rotary-drilling machines. Drilled wells have the right to be hundreds of feet deep and also require the surroundings of casing. Drilled wells have a lower risk of contamination as result of their depth and use of consistent casing. 

1. Well descriptions adapted indigenous the U.S. Geologic Survey, Groundwater Wells (2016)

Well components2

Below room descriptions that the simple components found in a personal water well.


Well Casing is the tube-shaped structure placed in the well to keep the well opened from the target floor water to the surface. In addition to grout, the casing keeps dirt and excess water out of the well. This help prevent contaminants indigenous less preferable groundwater indigenous entering the well and mixing v the drink water. Some claims and local administrate agencies have laws that call for minimum lengths because that casing. The most typical materials for well casing space carbon steel, plastic, and stainless steel. Local geology frequently dictates what type of casing deserve to be used.Well Caps are put on top of the well casing to protect against debris, insects, or small animals native getting into the well. Well caps space usually make of aluminum or plastic. They include a vent to regulate pressure during well pumping.Well Screens are attached come the bottom that the casing to stop too much sediment indigenous entering the well. The most usual well displays are constant slot, slotted pipe, and also perforated pipe.Pitless Adapter is a connector that allows the pipe carrying water come the surface ar to remain below the frost line. It offers ensures that a sanitary and frost-proof seal is maintained.Jet Pumps are the most commonly used pumps because that shallow wells (depth that 25 feet or less). Jet pumps are an installed above ground and also use suction to draw water from the well.Submersible Pumps are the most generally used pumps for deep private wells. The pumping unit is inserted inside the fine casing and connected to a power resource on the surface.

The Water solution Council had actually a more detailed fine component diagram and also other well-owner education materials

2. Well component descriptions adapted from the national Ground Water combination (2017)

Well location and also construction

appropriate well location and also construction are key to the safety of her well water. The well need to be situated so rainwater flows far from it. Rainwater have the right to pick up harmful bacteria and chemicals top top the land’s surface. If this water pools close to your well, it have the right to seep into it and potentially cause health problems. The facility for an illness Control (CDC) has terrific web web page on fine siting.

Appropriate well building depends on neighborhood geologic and also groundwater conditions. Your state water-well contractor licensing agency, her local health and wellness dtasiilaq.netrtment, or a neighborhood water system professional can carry out information on ideal well construction. The national Ground Water association (NGWA) provides a overview for rental a water system professional that covers vital considerations.

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Make sure any water-well drillers and pump-well installers you occupational with room bonded and also insured. If forced in her state, make certain your floor water contractor is licensed and also certified. Visit the national Ground Water combination to uncover certified water well building contractors near you. The NGWA operates its very own voluntary certification program for contractors . This enables drillers, and also well pump installers deserve to receive nationwide training certification on peak of state requirements. Some says actually usage the Association’s exams as their test because that licensing.