I had the water at our house tested today. We have low pH and high iron. The iron I knew about (subtle hints like the red in the showers, sinks and toilets, and the whites that we launder slowly becoming off-white). The pH I did not know about. Low pH means acidic water, which can corrode copper pipes from the inside out. Not something that we want to be happening!
The solution is a filter, which (with the appropriate filter sand) will bring the pH up and filter the sediment out of our water. The neutralized water will then pass through a softener. It won't be cheap, but it is something that needs to be done before much more time goes by. In the long term, this expense now will save lots of bigger expenses down the road. If we decide to have the filter and softener installed, they can be in within two weeks.