If you use bottled drinking water, a reverse osmosis drinking water system can pay for itself in less than one year. Bottled water quality right in your kitchen. No more hauling 40 pound bottles around or having it delivered for additional expense. Convenient faucet mounted to your kitchen sink. Replacement filters last six months on average and annual cost is approximately $125.00. Residential drinking water systems start at $549.00 installed. For more info call (810) 845-3708.