Prepared by Rabbi Aaron Alexander
Please note that this is not an official responsum of the CJLS.
The custom of Tashlikh, which is often observed on the afternoon of the first day of Rosh Hashanah (or day two if day one is Shabbat, can be treated with flexibility primarily because it isn’t an obligation that must be fulfilled. Therefore there are no specific time parameters that constrain it, and no definitive prohibitions on what kind of water may be used.
Read more: https://www.rabbinicalassembly.org/story/tashlikh-where-and-when