We live in a "water shed" area. This may be a similar thing. The city's drinking water comes from under our neighborhood.
There are restrictions on "dumping" things. Which generally occur no matter where you are, but I think the restrictions may be enforced more here..? you can't change your oil here, you have to take your car elsewhere to do it. You can't put anything down the storm drains. Although people wash their cars all the time with the run off going down the storm drains. If there is a spill such as motor oil, gasoline, paint, or any toxic chemicals, you have to call the waste management service to have it cleaned up. I'm not sure how they clean it up because we haven't experienced this type of spill.
I think the types of business that can opperate here are limited as well. Generally "clean" types of businesses, I would guess. There are retail establishments, restaurants, churches, storage facilities, but no industrial type stuff.
And there are limits of having basements and swimming pools. We cannot have a basement on our lot, but about 2 miles down, they can. We could have a swimming pool, but I'm not sure if there are any depth limits.
The benefits are that there is a lot of green space around here, lots of trees, parks, golf courses, walking paths. There's even 2-3 horse boarding/riding lessons places.
Not sure if that is helpful for you.