Our well is about 7 years old, never given any trouble in that time. In the past couple weeks we have been getting a lot of sediment into the house and cattle waterers, little fine pieces of rock that were ground up when the well was drilled it appears. Keeps clogging up valves. I've got a filter to install in the house but it won't take care of the cow fountain. Sediment will be bad one day and not so much the next, comes in spells. Been dry for the past two years but we've had a relatively normal fall. Any ideas would be appreciated.