Development Of Smart Rain And Used Water Harvesting System For Tup Manila/ Jobert P. Santillan, Angelo Miguel Tatel, Brian Jay A. Lansigan, Paul A. Pelaez and Ericka S. Cabico.--

Bachelor's thesis

College of Industrial Technology.-- Bachelor of Engineering Technology Major in Electronics Engineering Technology: Technological University of the Philippines, Manila. 2023

Includes bibliographic references and index.

Water is one of the most important resources for humankind. However, water scarcity in
the Philippines is an increasing issue both in rural and urban areas. The root causes of this
problem include a combination of factors such as population growth, urbanization,
climate change, inadequate water infrastructure, poor water management practices, and
pollution. This project study provides access to clean and safe water for residential and
provincial areas in the Philippines. The prototype utilizes a smart rainwater harvesting
system that collects rainwater in a reservoir and filters out harmful particles through a
3-stage water filter with a user interface with a microcontroller unit, sensors, and control
via IOT. Testing results revealed that there is a significant difference between the three
water samples in terms of pH levels. Hence, the researchers categorically rejected the null
hypothesis of the study. Specifically, the rain water is found to have the lowest pH level
with 7.160 ± 0.3502 pH; followed by tap water with 8.433 ± 0.1886 pH; and lastly, used
water with 7.890 ± 0.1197 pH; where p = .000. The results further reveal that while there
is a slight deviation on the pH levels between the three water sources (i.e., SD = 0.5788,
% error = .1057), the detected pH levels are still considerably at the neutral to alkalinized
levels, hence, still safe to human skin when such filtered water is used for washing
clothes, dishes, and other household purposes. Nonetheless, the pH level sensor used in
the study has proven its accuracy in detecting variations in pH among the three water
sources. Lastly, based on the ISO 25010:2011 evaluation results, the respondents
perceived the prototype as “excellent” in terms of Functional Suitability (average rating
of 5.00), Usability (average rating of 5.0 and 4.9), Reliability (average rating of 4.60),
and Performance Efficiency (average rating of 4.80). Furthermore, the research aims to
provide a reliable and cost-effective solution that reduces dependence on traditional water
sources and minimizes the overall cost of water for communities. By incorporating smart
technologies and efficient water management techniques, the study aligns with the United
Nations Sustainable Development Goals (UN-SDGs) 6 and 11, which focus on clean
water and sanitation and sustainable cities and communities.