Our house has been losing water pressure drastically over the last four weeks. I put a gallon pitcher under several of the faucets in the house and got no more than ¾ of a gallon per minute flow rate. Toilets took 4 minutes to fill after flushing, and the washing machine took almost half an hour to fill. The landlord sent a plumber over today, and he replaced a section of old galvanized pipe on the street side of the water meter in the basement. In that mere two feet, there were four 90° elbows, two unions, and an old gate valve, all of which were pretty much 100% clogged. We now have more water pressure than we've had in this house since we moved in a year and a half ago. After taking Mason to the bathroom this afternoon, we were actually able to wash our hands with no noticable diminish in water pressure at the faucet WHILE the toilet was flushing. Just for kicks, I turned on the bathtub faucet at the same time and got full pressure out of that, too! Amazing stuff! Yay for clean pipes!