| Impact ID | 7850 |
| Impact Type | Human Health |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | Concerns have arisen in the western U.S. regarding the role of Butomus umbellatus populations as an ideal habitat for the great pond snail (Lymnaea stagnalis), an intermediate host of a trematode (Trichobilharzia ocellata) responsible for swimmer’s itch. |
| Reference | 25143 |
| Cost | |
| Location | |