What is the minimum size of a water service pipe for a single-family residence in Alabama?

The minimum size of a water service pipe for a single-family residence in Alabama is 3/4 inch. This size is established to ensure that the home has an adequate water supply for daily needs, including multiple outlets operating simultaneously, such as sinks, showers, and appliances. A 3/4 inch pipe provides sufficient flow rates to accommodate these demands without experiencing significant pressure drops.

Larger sizes, like 1 inch or 2 inches, may be utilized in specific cases, such as larger homes or properties with extensive irrigation needs, but they aren't required for a typical single-family residence. A 1/2 inch pipe would be too small, potentially leading to inadequate water pressure and flow rate, which is why it does not meet the necessary requirements for residential plumbing in Alabama.