I have a deep drilled well with supply lines split to feed the house and livestock watering respectively. The flow to the livestock line remains constant regardless of water usage in the house. But with everything turned off in the house except one faucet, when a toilet is flushed the flow from the faucet reduces to a trickle. Pressure at the well remains at 45 to 50 lbs. What's up? Also, whenever lightning strikes nearby, I get mud in house water. I'm perplexed.