To fundamentally resolve the issue with insect eggs, the only current method was to filter them out using filtration systems, but embarrassingly, they were all submerged.
If this issue had arisen before the apocalypse, it wouldn't really have been a problem. Emergency production of ultrafiltration equipment would have been possible immediately. In the United States, everyone drank water straight from the tap, which was already filtered in factories; there, it wouldn't even have been considered an issue.
But now, producing these devices had become very difficult, especially the precision components, because raw materials were extremely hard to find. Filter equipment and filter elements weren't even produced together, and manufacturing a single device required hundreds, if not thousands, of different raw materials.
Therefore, the only option left was to salvage previously manufactured equipment.
