it's just when I do laundry, the system is backflushing I'm getting puddles.
What is 'backflushing' while laundry washing is being performed?
A pH neutralizer system should not be backwashing while water is being drawn. The backwash cycle will be typically programmed to take place every few nights or even nightly during which time residents will be sleeping so little to no water will be utilized while the media is being back washed.
If water continues to exit the pH neutralizer drain line while the unit is not undergoing a programmed backwash cycle, this suggests there is a problem with the neutralizer's control valve which will likely require rebuilding the valve to resolve that issue.
Does the well pump periodically startup while no water is being utilized? If so, shut off the main water valve feeding the house (should be located after the well pump's pressure tank and pressure switch) to help to determine where a leak is located, either before or after the pressure tank. If the pump no longer continues to startup, this will indicate there is a leak after the pressure tank (seeping toilet?) but if the pump continues to periodically startup while the house feed main valve is completely closed, this will usually confirm there is a leak somewhere between the pump and the main valve.