Depends on if they are supplying raw water or filtered water. That's something you'll have to ask them. Even if it is unfiltered raw sea water, the pumps will have damaged a percentage of the plankton. If it's filtered or from a well, there will be no plankton. However, you can just go off a beach or dock to collect water with plankton. If your looking for quantity to use for feeding, you will also want to invest in some kind of plankton net or sieve. The folks at the lab might be able to help you out with a little plankton collecting if they are so inclined.