The Santos business unit of Sabesp undertook a $1.6 million project to analyze
water demand and readjust metering in Sao Paulo, Brazil. The project focused
on connections with issues related to fraud, on-site auditing, debts settlement,
and practices related to nonrevenue water. Hydraulic network modeling was
applied to reduce water losses and unbilled water.
WaterGEMS was used to analyze consumer demand, water connections, and
hydraulic variables that affect water metrology, such as pressure, flow, and use
of water pumps. As part of the readjustment, consumer demand profiles were
raised, resulting in an average increase of 210 percent in water volume billed.
The water loss rate in the global distribution network decreased from 500 to
400 liters per connection per day.
Sector Casa Verde Water Network Infrastructure Renewal
Sao Paulo, Brazil
With 85 percent of the water distribution network over 40 years old, the Casa
Verde sector in Sao Paulo, Brazil, was experiencing high rates of water loss
at 700 liters per connection per day. The objective of this $4.9 million project
was to optimize the system and reduce water loss. The infrastructure renewal
program also improved performance to meet demand through 2020.
Sabesp performed hydraulic simulations using WaterGEMS to compare
performance results and obtain cost/benefit analyses for proposed
interventions. One scenario evaluated the replacement of the old network using
high-density polyethylene materials. This approach proved to meet the program
goals for present and future performance, eliminating the need to replace the
water network infrastructure in 2020.