How do you know if you have a water leak? With the rising cost of water in San Diego due to the drought, it’s one more reason to know how to detect a water leak in a home as soon as it begins. Whether it's a leak in the kitchen or bathroom or perhaps a leak in the main water line, knowing how to determine if a leak exists can save you gallons of water, and tons of money.

On average, a faucet that appears to have only a minor drip can eventually waste more than 1,000 gallons of water during a year without repairs. Rather than let this happen, contacting a plumber for an evaluation and repairs can benefit you financially. Following is a 3-step guide to aid you in the determination of a leak.

1. Water Meters

A home's water meter is an excellent way to find out if you have a leak. First, turn off all water in the house and prepare not to use any for at least 30 minutes, including the toilet. Second, look at the meter and note the current numbers. If after seeing the beginning number go up 15-30 minutes later despite being turned off during that time, then you definitely have a leak. If the increase is small, the leak may be as simple as a dripping faucet or toilet that won't stop running. However, if the increase is large after only a limited period of time, the problem could be in the home's cooling system or main water line.

2. Cooling Systems

Did you ever think to look into your AC for a leak detection? Even if your cooling system is modern, it can also be the source of a water leak. If water is continually found near a furnace or around ductwork in the basement, the problem could be a broken refill valve that is letting water find its way out of the cooling system and on to the floors or walls. If you have determined there is a leak in the cooling system, a professional plumber will need to examine the system to determine if it can be repaired or needs to be replaced.

3. Underground

Increased water bills, water noise running in your walls or a hot spot in your flooring can all be signs of an underground water leak. Don’t ignore these critical signs. Slab leaks are typically pinhole leaks that occur within or underneath your foundation as the concrete begins to deteriorate. These pinhole leaks can evolve; pushing water toward the path of least resistance leading to foundation cracks, water discoloration, warped flooring, mildewed carpet and other expensive damage.

If you suspect a slab or any other water leak, the sooner you act, the less costly it will be.