Is building bathrooms for the mosque and an iron water tank on the roof of the bathrooms, as well as repainting the mosque, considered an ongoing charity (Sadaqah Jariyah)?

The mentioned deeds are considered ongoing charity (sadaqah (definition) jariyah) for which a servant is rewarded if their intention is sincere for Allah. These are among the things that benefit a believer from their deeds and good actions after their death, as stated in the noble prophetic tradition: "Indeed, among the good deeds and merits that will reach a believer after his death are knowledge he taught and disseminated, a righteous child he left behind, a copy of the Qur'an he bequeathed, a mosque he built, a house he built for a traveler, a river he caused to flow, or charity he gave from his wealth during his health and life; it will reach him after his death."