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Michelle RamosSep 5, 2025
Why is my Pentair Water Filtration System producing hard water?
- MMariah GreeneSep 6, 2025
If you're experiencing hard water with your Pentair Water Filtration System, several factors could be the cause. First, ensure the by-pass valve is closed. Then, check the brine tank and add salt, maintaining the salt level above the water level. Other potential causes include a plugged injector screen (clean it), insufficient water flowing into the brine tank (check brine tank fill time and clean the brine line flow control if plugged), hot water tank hardness (repeated flushing of the hot water tank is required), a leak at the distributor tube (ensure the distributor tube isn't cracked and check the O-ring and tube pilot), or an internal valve leak (replace seals and spacers and/or piston).
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