I have a Culligan water automatic water softener with salt bin. About 5 times in the past 16 months, it has left the water supply very salty. We have gotten up in the morning and the initial water draw is brine. I run the recharge manually, and in a few minutes, we were back to normal water. It may be months before it happens again. I have water that is not very hard even without treatment, so have set it to recharge once every 6 days, and the minimum salt charge, but it did this once before I lowering the salt usage. The system is passive, meaning it has no pumps. Therefore, I am guessing it uses a venturi effect to draw up the brine from the salt bin, and then after a delay, purges the brine from the resin tank. I am guessing it is not allowing long enough time to purge the salt from the resin tank, and leaves brine in the softener tank. If so, why is this rather random and rare? The cycle appears to have completed by our wake up time, so it does not appear we ran water before the cycle had completed. What can I do to avoid this? Culligan was unhelpful, and simply said it should not do this.