Yes. The water in Addo is perfectly safe to drink.
Addo normally receives about 281mm of rain per year, with rainfall occurring throughout the year. Addo receives the lowest rainfall in July and the highest in March. The average daily maximum midday temperatures for Addo range from 20.7°C in July to 28.2°C in February. The Addo region is the coldest during July when temperatures drops to 7.3°C on average during the night.