Educational use
The site does not provide a site inspection, engineering design, code approval, utility advice, or a contractor-client relationship. Conditions underground and local requirements cannot be verified through a webpage.
Safe use
Do not work on pressurized equipment, exposed electrical parts, pumps, backflow assemblies, or buried utilities without the knowledge and authorization required for the task. Call 811 before digging where required.
Calculations
Calculator outputs are estimates based on visitor inputs and simplified assumptions. Confirm equipment selection with measured conditions and current manufacturer documentation.
Intellectual property
Original site text, interfaces, and graphics may not be republished in bulk. Manufacturer names may appear only to identify compatible products or support documentation; the site is not endorsed by those manufacturers.