Quick Answer
Protect your well from surface contaminants by installing a casing and screen system that extends below the water table and above any potential contamination sources, such as the water table or bedrock. A well cap or seal should be used to prevent surface water from entering the well. Regular maintenance and testing can also help identify and address potential contamination issues.
Casing and Screen Installation
A properly installed casing and screen system is critical to preventing surface contaminants from entering your well. The casing should extend at least 2 feet below the bottom of the well and 1 foot above the water table. A well screen with a slot size of 0.006 to 0.009 inches is recommended for most domestic wells. The well screen should also be installed to a depth that extends below any potential contamination sources, such as the water table or bedrock.
Well Cap and Seal Installation
A well cap or seal should be used to prevent surface water from entering the well and contaminating the water supply. The well cap should be securely attached to the top of the casing and should be designed to allow for easy access and maintenance. A well seal, such as a rubber gasket or a cement-based seal, can be used to seal any gaps between the well cap and the casing.
Regular Maintenance and Testing
Regular maintenance and testing can help identify and address potential contamination issues before they become major problems. The well should be tested annually for coliform bacteria and other contaminants, and the well cap and seal should be inspected regularly for signs of wear or damage.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.