When we bought our retirement property we were blessed by two pristine creeks from different directions converging on our place. One of them went into the woods and we were of the mistaken opinion that it would always be clean and nice. And it was until the neighbors from hell bought a tiny spot upstream and built a two story house on it with nowhere to put a septic system. They buried a septic tank and proceed to build an outbuilding on top of what was supposed to be a leach field. A REALLY small leach field. Now the creek is nasty with sewage. Easy to tell when they do laundry because of the soap suds floating by. Water is so filthy I will not let me dogs in the creek anymore. Welcome to America.