90% of all water leaks are from toilets. A faulty $10 part can cause $200 to $2000 in wastage. ALL 40 million toilets in our target market will eventually leak. It's an intermittent problem, hard to detect. The environmental impact: in 15 years toilet leaks in the US waste enough water to fill lake Michigan. Our $15 device clips under the toilet rim, analyses water flow, then flashes a light and sends email when a leak is found. It makes a profit of $10 per unit plus $1/month subscription fee.