Pride Plumbing came out and provided cost estimates to perform the following work: 1) remove and replace an air control valve with a new Acorn model; 2) replace the flanges and cast-iron drain lines underneath two toilets along with adding two vent lines on both new drains and installing two new ball valves on the water lines coming up through the floor; and 3) repipe and replace the copper water supply lines under the building in the crawlspace with new copper piping and fittings along with installing a new main ball water shutoff valve, pressure reducing valve (PRV), and water filter.