Use twelve-month or seasonal totals from your own utility bills, service quotes and product purchases.
How to use the result
Compare the annual result with household cash flow and include it alongside financing or opportunity cost. A cover, leak repair or changed pump schedule may reduce some categories, but sanitation and freeze protection must remain adequate.
Privacy: The calculation runs in your browser. The site does not receive or store the values you enter.
Planning limitation: This result is an estimate, not a design, quotation, permit decision, water-treatment instruction or safety approval. Verify dimensions, rates, product manuals and local professional requirements.