West,

Call the pool company and find out what they were filtering out. Good fill water should be fine....must be an issue with water in your area or perhaps they were just being extra thorough.

Swimming above 10ppm may fade a swimming suit...won't fade the swimmers...skinny-dip, anyone?

Above 5ppm, you will test for FC only (normally), so we're talking FC although the difference between FC and TC is minimal at those levels.