plainoldme wrote: Anyone who lives in an area where there are lakes has probably noticed that no one lives on them anymore or swims in them or fishes.
Mebbe like that in your neighborhood, but my neighborhood is known for pristine lakes and streams, and the lakes and streams with public access (which amounts to most of 'em) are very closely monitored by the State Department of Natural Resources. There are strictly enforced regulations limiting lakefront/watercourse development, and, as I said earlier, while some waters adjacent to or surrounded by municipalities face threats (which at fairly considerable expense are being dealt with), the rural surface waters hereabouts pretty much are splendid - even when swarming with folks bathing and fishing. Many lakes, public and private, prohibit or severely restrict motorized (other than battery/electric) watercraft, in fact. As for the subsurface waters, my well is typical for the area, is absolutely untreated, discharges water year round at 45° to 47°, and by analysis checks out undetectable for contaminants apart from a very little bit of iron and just a trace of hardness; the pH averages 7.4-7.6. Our Bunn brand coffee maker is years old, never has had to be de-limed, the water heater is ancient by contemporary standards (dates to somewhere in the '70s) and has no rust, sedimentation, or deposit buildup, the animal-watering bowls and troughs (some are stainless steel, some galvanized, and some are poly) never evidence sedimentation or deposit buildup, and the year-round pond in my front yard is an ecosystem of its own, filtered via its pumping system but otherwise untreated, and home to all sortsa fish, water plants, amphibians, and aquatic insects; nothing, no nutrients, algaecides, or other chemicals, of any sort, not even fish food, ever are added to it. I don't make a habit of drinking my pondwater, but I have drunk some from time to time,the critters drink from the pond all the time, and none of us seem to have suffered any ill effect. The pond water tastes fine, but water straight from the well is cooler in the summer. We live with nature here in The Northwoods, not against it.