Abstract— Clean water is the need of every human
being, for that the necessity of clean water is a priority for
the government in providing services. The current
problem is the lack of clean water that has not been evenly
distributed due to government limitations. For that reason,
in providing services, it must be according to priority in
order to have a broad impact on the community. For this
reason, in this research the development of an information
system can be used to assist in determining priorities in
handling clean water sources. In the development process
the waterfall method is used while the determination of
priorities uses simple additive weighting. The results
showed that the simple additive weighting method can
provide a clear value in determining the priority of clean
water handling. This condition can be seen from the
existing process in the information system, which starts
from weighting, filling the survey value to simple additive
weighting calculations. besides that, the information
system can run well in accordance with the expected
proven by the results of testing using black box testing to
get the test results received. This condition is proven by the
function of the information system that produces the
calculation correctly in accordance with the provisions of
the SAW.