The Fontana delle Tartarughe is being restored again. This is what Wanted in Rome wrote on 21 November 2003.

The late 16th-century turtle fountain in Piazza Mattei, one of Rome's best-loved monuments, is being fitted out with an experimental new closed-circuit water system to prevent the build-up of calcium deposits. Small sections of the bronze male figures, turtles and dolphins that adorn the fountain, along with sections of the marble basin, are currently being cleaned to rid them of their thick white calcium deposits, At the end of the month the scaffolding surrounding the fountain is due to be removed and the water turned on once again. Once the new system has been tested and improved, the rest of the fountain will also be cleaned and restored.