Hi Kade,
Thank you for your follow-up question.
Unfortunately I do not have any specific resources on water retention ponds specifically in Loidahar. The implementation of the water retention ponds in Loidahar is publicly limited. However, I would agree with your reasoning here. In the wet season additional water treatment processes would need to be utilised to meet drinking water standards and remove sediments, debris etc.
I hope this helps.
Kind regards,
Evelyn