{'fraction_non_alphanumeric': 0.018298261665141813, 'fraction_numerical': 0.006404391582799634, 'mean_word_length': 5.39766081871345, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Rainwater Harvesting to Increase Freshwater Carrying Capacity on Small Islands (A Case Study of Pramuka Island)

Pramuka Island is a small island that is covered with dense settlements, inhabited by 1,715 people, and experiencing rapid population growth with increasing visits by tourists every year ]. As a result, there is a high demand for freshwater, leading to a large-scale exploitation of groundwater on the island. Yet, a research conducted by [1] had indicated that groundwater on Pramuka Island is below the minimum standards for drinking water. This report discusses the effectivity of a rainwater harvesting system as a solution to the freshwater carrying capacity of Pramuka Island. The discussion involves analysis of freshwater carrying capacity based on water balance calculations between freshwater supply with rainwater harvesting and potential freshwater demands for domestic usage, tourism, and other activities. The results revealed that the scenario of the whole island as a rainwater catchment area is enough to supply local freshwater demand for approximately 27 years.