I have a reduction in water pressure (slight drip) on the cold water side in some faucets..but not all. Although, I believe that if I ran any of them they would also show a reduction. The main supply shut off and meter is outside at the street. The house has three hot water heaters and a water softner. The water is very hard in this part of the country..South Texas. Is it possible that the water softner valves are clogged? Could be the PRV at the meter is bad? Although when I run the hose bibs outside I do not notice any reduction in pressure. Any thoughts. Construction is slab on grade. Thanks for any help provided

 

In the affected faucets, you mentioned a reduction in cold water pressure -- what is the hot water pressure like? If it is also very low to non-existent, then your aereators on each faucet are probably dirty and need to be taken off and cleaned. If the problem is only with the cold waer side of thes faucets and the hot side is normal, then you have some sort of obstruction in the cold water line that supplies these faucets. Hope this helps