Water filtration/ Tap Water (Tashkent)

Hi, all -

Since I arrived in Tashkent, I've been using a Brita filter that someone else brought from U.S. on the kitchen water faucet and have had no problems, but I won't have enough replacement filters to last very long. Can someone tell me where to get replacements, either Brita or some other local system? In India, I used an RO machine attached in my kitchen and that was very good. Suggestions or sources?