The best way to make normally yucky-tasting campground water taste good and run clear is by using an RV water filter system that fits inline, right between the water spigot and tour RV's after intake connection. 
But note this: All inline RV water filter system inline cartridges are not alike!
Here's a player to listen to the full podcast. The interview of the week segment about the RV water filter system is about 29:08 in. 

This week on the RV Podcast, we learn about the new RV water filter system we are now using when we fill our RV fresh water tanks or when we connect to a campground spigot. It's from a company called Clear20 and this week on the RV Podcast we interview the company's CEO about a two-stage RV water filter system they sell that consists of an inline water filter and a the Dirtguard pre-filter device that takes out the sediment and particulates before they go through the inline filter.

Together this RV water filter system transforms your inline water filter into a two-stage filtration approach.  This makes the water taste good and ensures that you have the cleanest possible water. 

How is the bright green RV water filter system by Clear2o different than than the normal blue or gray inline filters you pick up from Walmart or a camping store? Three ways: Flitration medium, filtration efficiency and price.

First off, let me note that I have no financial interest or sponsorship relationship with this company. I sought out the interview with the Clear2o CEO  after being fed up with bad-tasting campground water and doing some research that led me to get both the Clear20 inline filter and the Dirtguard pre-filter.  

Both units sell for $34.95.  The Camco inline filters we had been using cost $17 or so on Amazon, or two for $30. So the Cler2o inline filter is about twice as much. The DirtGuard pre filter is $39. That's the price difference.

The filtration medium difference is the way the water is filtered. The cheaper and more common inline RV water filter uses powdered charcoal. The Clear2o RV water filter system uses solid charcoal. 

And that leads to the efficiency of the filtering. The cheap carbon powder filters screen out particulates and sediment down to about 20 microns. The solid Clear2o inline RV water filter system screens those particulates down to 1 micron. It makes the star cleaner, clearer and it taste better.

See why I got this Clear2o RV water filter system?

Here's a link to the Clear2o inline filter- https://amzn.to/2YEZ1JX
Here's a link to the Clear2o DirtGuard pre-filter - https://amzn.to/3fywywn

Here's a transcript of the interview I did for Episode 299 of the RV Podcast with Keith Bernard, CEO of Clear2o on what to now about an RV water filter system:
 

Mike Wendland:           Well, to find out more about an RV water filter system to make that RV drinking water taste a little better and be a little healthier, I'm excited to have on the other end of the phone Keith Bernard, he is the CEO of Clear20, and I just came across this process, this product really this week. I should tell you we have no commercial relationship with these guys. This is just a really cool product that I think will benefit us and hence you guys, too, out there in the listening audience. So first of all, welcome to the program, Keith, thanks for making time for us.

Keith Bernard:              Thanks very much. I'm glad to be here.

Mike Wendland:           Let's talk in general about an RV water filter system. I mentioned at the top of this, on how hard it was for us to drink the water that was coming out of the campground spigot. Even though I use one of those little inline filters, I always have one of those, it just didn't taste very good. So maybe you could help us all understand it. What are some of the issues involved with campground water from that little spigot that they provided at the campsite?

Keith Bernard:              Yeah, absolutely. Well, quite often everybody's more comfortable with the...