Hardness 6 Arrived on site client stated her second floor bathroom faucet was dripping, kitchen faucet handle was getting stiff and under the lav faucet the cold emergency shutoff valve wasn’t working as it should. Checked for hardness and got a 6 hardness. Client stated she only had these cartridges replaced 1 year and a half ago and the faucet is already dripping. Gave options to replace cartridges and replace shutoff valve underneath lav sink. Client also stated she has a filter guy that can take care of her water quality.