. >> rachel garza found a leaky faucet that'll need a plumber attention.attention >> they don't make a sound and you cannot see the leak. >> we tried to conserve the water we use in the house and out in the yard and we had our own well dug to cover most of our irrigations but it has got dry. >> sure enough, he found a 40 gallon under water leak. >> homeowners can monitor it online. >> we can find it exciting. oh, oh my god, we can help you. we got something and we can help you lower your bills. >> i love that, i am excited about it. >> an estimate leak loss of 10 gallons a day per customers and in a year that's more than a billion gallon and enough to put on a fish tank on a full size of a football field. >> when you see those patterns it allows us to say, oh there is a potential leak out there. >> finding leaks are a top priority because customers cutting their use back to the level of the three drought that begins in 1987. tom veterans vaca , ktvu channel 2 news. >>> if you can see, right now we are in the clear. now, today we had some fog regrouped and