Installing an outdoor water fountain costs $2,700 on average, not including the cost of the unit. Prices range from $150 to $10,650, depending on your location, the type of fountain, size, and accessibility to the site. Self-contained fountains and water features recirculate the water within the unit. Depending on size and features like multi-tiered cascading bowls, they typically cost from $50 to $5,000. More elaborate fountains with waterfalls and ponds can cost from $450 to $10,000 or more.

Natural pools don’t necessarily attract snakes, although there is a chance they could stop by for a quick visit. They’re not likely to stay, however, because there’s nothing for snakes to eat in a natural pool environment. A well-maintained natural pool has clear water, so you should be able to easily spot a snake before diving in.

How many fish can call your pond home depends on the volume of the pond and the fish size. Your pond's filtration system also influences the number of fish that will thrive in a pond. A general rule of thumb is to have 1 inch of fish for every square foot in a pond that's 2 feet deep. Another rule of thumb you can follow is to have one koi fish for every 200 gallons of water or two goldfish for every 200 gallons.

A koi pond may add value to your home if it’s a feature sellers are looking for. Like pools, ponds can affect your property value depending on their condition, whether they’re a popular selling point, and how well they’re incorporated into your home’s landscape.