Installation of 4 new moen 1224 cartridge assemblies, restored water to these faucets and tested for any leaks or drips from the faucet assembly’s, also looked at another faucet in an exam room customer reported water was coming out discolored, ran water for 3-4 minutes with no signs of discoloration, if the faucet is not used often it’s definitely possible the stagnant water within the line could become discolored over time. Running this faucet more often will keep this issue from continuing further