I don’t know. Are you thinking about
outdoor mold or indoor mold?
It’s possible the pond could cause indoor humidity to be higher than it would be if there was no pond, in which case a dehumidifier would help (assuming the house is not already moldy).
As to outdoor mold, I would think sun vs shade would be the most predictive factor. If it’s a clean pond with no shade or trees around it, it probably would not be an issue. If there’s trees everywhere, there will be outdoor mold.
The biggest issue with a pond is whether or not it has algae. Some algae produce toxins. Pfiesteria/dinoflagellates and cyanobacteria. If you have CIRS or an HLA-DR multi-susceptible gene to all biotoxins, you will need to pay attention to what’s in the pond.
Post Edited (WalkingbyFaith) : 9/12/2021 10:35:21 AM (GMT-6)