Frequently Asked Questions

what is an average family's water usage?

Historically, we have found that the typical four person family (two adults, two children) uses approximately 95,000 gallons per year on average. However, it is hard to determine an exact average due to the differences in individual needs. We have found that customers with irrigation or watering systems can use an additional 80,000-200,000 gallons during the summer months!


What is a cross connection?

A cross connection is any actual or potential connection between the public drinking water supply and a source of contamination, which can allow pollutants to enter the drinking water through backflow.

cross-connections-infogram

Why is water running out of a pipe in the middle of nowhere?

For the purpose of safe drinking water quality, our distribution system has built-in "blow-offs" in areas of the system where the water mains have a dead end. By running water through these "blow-offs", we maintain a constant circulation of water in the system.


What is our swap (source water Assessment & protection) report?

Click Here: Tisbury Water Works SWAP Report