Lynnmor wrote:
Are you feeling lucky today?

Left is from my tank, center from hydrant, right after Camco blue filter. Water was flushed for some time before taking sample.
It should be noted that while the colored water is certainly unappetizing, it could be safe to drink. It should also be noted that while the clear/colorless water is much more appetizing, it could be deadly to drink.
It should also be noted that the EPA, that is the Feds, do not regulate campground or municipal water supplies, that is a function of State governments via the Health Department. And those regulations vary by state, so that while it may be 10 campsites that trigger regulation in Washington State, it could be 25 elsewhere. In any case, we choose not to drink or cook with campground water, regardless. We use bottled water, either from a couple carboys brought from home or jugs from the grocery stores. We only go through a couple gallons for drinking/cooking, so it's not a big deal.
Interestingly, we stayed at once fairly fancy (and large) campground once where we were handed a sheet of paper along with the campground rules, with no comments on check in, that constituted the notice required by the state that the campground water system had failed the tests for fecal coliforms two months in a row prior to our arrival and advising folks to boil the water. Had we not actually looked at the stuff in that bundle of papers, we would have simply hooked up as usual. Instead, we ran off the fresh tank for showers and stuff.
But the water there looked like the "good" sample above.