Water Hyacinth was recently made illegal in WI too, (it doesn't survive the winter there naturally so kind of a stretch) but many people have had pit in onds for years.
I have kept in in inground ponds too, but there was never an outlet to any natural waters.

Here in Panama it is a problem, with many mats clogging parts of Lake Gutun (the Panama Canal).

I have kept in in inground ponds too, but there was never an outlet to any natural waters.

Here in Panama it is a problem, with many mats clogging parts of Lake Gutun (the Panama Canal).
