False about guidelines on sanitary well
**Core Concept**
Sanitary wells are a common source of drinking water, especially in rural areas. The guidelines for sanitary wells are aimed at ensuring the water is free from contaminants and safe for consumption. The guidelines typically cover aspects such as well construction, location, and maintenance.
**Why the Correct Answer is Right**
The correct answer is related to the guidelines on sanitary wells, which emphasize the importance of proper well construction, including the use of a well casing and a well cap to prevent contamination. The guidelines also recommend that the well be located at least 50 feet away from any potential sources of contamination, such as septic systems or animal enclosures.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately reflect the guidelines on sanitary wells. While it is true that the well should be located at a safe distance from potential sources of contamination, the specific distance of 100 feet is not universally recommended.
**Option B:** This option is incorrect because it is not a relevant consideration for sanitary well guidelines. The type of soil or rock surrounding the well is not a primary factor in determining the safety of the water.
**Option C:** This option is incorrect because it is a misleading statement. While regular maintenance of the well is important, it is not a specific guideline for sanitary well construction.
**Option D:** This option is incorrect because it is not a recommended practice for sanitary well construction. In fact, the guidelines typically recommend that the well be located at a safe distance from any potential sources of contamination, including animal enclosures.
**Clinical Pearl / High-Yield Fact**
One key aspect of sanitary well guidelines is the importance of proper well construction and location to prevent contamination. A well-constructed well with a secure well cap and located at a safe distance from potential sources of contamination is essential for providing safe drinking water.
**Correct Answer: D.