I would assume that winter helps water supply since, one is less likely to wash their vehicles, water the garden, wash the exterior of the house, and some even shower less :(
After snow falls, it will eventually melt and become water, thus supplying the earth with water. For example, there is a village in South America that receives clean water in their main lake which is...
If there is a basement, locate the pipe where it goes through the exterior wall leading to the outside water faucet. This is your starting point.
Follow the pipe under the flooring, going towards...
Frozen pipes? Didn't pay the bill? Check the pipes from the foundation to the first faucet and see if there is a draft. Very often where the house meets the foundation there is a gap and a pipe can...