Bucket test water from the well turned brown after adding Clorox. I filled a bucket with water from the well tap 3 days ago, it turned brown just sitting after a day. Water is clear but brown. When we drained the pool the last bit of water had to wait till we got back from an out of town business trip. The water was clear and there were small brown patches that gathered together. When we swept the water toward the vacuum hose the brown patches would mix back into the water making it brown again. A professor at NCSU (our local university) tells us they have had many problems with iron in water this summer. Is this possibly the cause?