Yogyakarta, August 7, 2026 — The Community Service Team of the Functional Materials Research Group at Universitas Negeri Yogyakarta conducted a Workshop on the Production of Ferrite-Based Water Filters from Glagah Beach Sand, Kulon Progo, as an Effort to Utilize Local Materials for Students of SMA Negeri 5 Yogyakarta. The activity was held on Friday, August 7, 2026, from 9:00 to 11:00 a.m. Western Indonesia Time at SMA Negeri 5 Yogyakarta.