Where Is The Restaurant In Poptropica Where Can I Find Commercial Filters For A Restaurant?

Where can I find commercial filters for a restaurant? - where is the restaurant in poptropica

I want to buy filters for a restaurant, but I'm not sure where to start looking for me. I want one for the ice maker, cooking and drinking water. Maybe some kind of filter that attaches to the hose. And I would not have to change too frequently. Has anyone started looking for ideas?