For those of you who live in a municipality and use the municipal water source as fill water, how many folks on here have thought to check it? This would seem to make sense to a certain degree, especially if one is having problems with CH being high and such. For those of you who know, would it be reasonable to expect varying levels of things such as TA and CH from time to time or can one expect that if a municipal water source that has a TA of 120 and a CH of 350 will pretty much keep those same levels constantly year-round? If not, then it would probably be prudent to check the water from the tap prior to doing a large fill.
These are the questions that I come up with on a cool and cloudy day when I am bored with no grass to mow and it just wouldn't be much fun to sit out back and drink a beer. They come from the transoms of my mind and may mean nothing.