Hello,
Timmy ...
The virtual forum description of the impluvium doesn't explain why it fell out of fashion--in most Roman towns and cities, people had running faucet water and no longer needed to store rain water!
Here in the Virgin Islands we have no wells nor fresh water lakes to supply our water. We, therefore, must depend upon rain collection for our water needs.
As the Roman civilization became more sophisticated, great aquaducts were built to bring water from the mountain streams and lakes to the cities. Unfortunately, the Romans were unaware of the hazards of lead. And, many of the aquaducts and pipes were constructed with lead parts and pieces.
On the island of St. Thomas, we have no aquaducts, as none of our mountains are high enough to create rain forests. So, everyone has to have a "functional"
impluvium of sorts.
Our modern day
impluvium isn't a basin in the center of an
atrium. The
impluvium that we use is shaped more like a rounded gutter than a basin. However, we do have cisterns to hold our water supply. Our cisterns probably look somewhat similar to the ones that the early Romans used to hold their water supply.
Living in the islands has taught us a lot about conservation. It seems that the early Romans may have been a bit more eco-friendly than the generations that followed.
All the best,
Richard