SABESP provides water to more than 28.7 million customers, or 67% of the population of São Paulo state. Water loss due to leakage in the SABESP network is a significant problem. The biggest reason behind water loss is leaks in the network; additional factors include sub-metering, caused by low water pressure; unauthorized consumption and fraud. Improving water management, recovering lost revenue and improving the quality of the customer experience is a priority for SABESP. To help improve revenue generation and reduce water loss SABESP developed two projects: LigGeo, to geo-reference the water meter location of approximately 4.8 million SABESP customers; and CadGeo, to geo-reference and register the location of the SABESP water and sewage network infrastructure.
According to Marcos Almir, sanitation systems analyst for the metropolitan department of development and management of SABESP, the twin projects of LigGeo and CadGeo were motivated by SABESP’s desire to improve productivity and competitiveness. “We created an innovative GIS effort to geo-reference and register SABESP distribution networks and buried assets. Tests showed the technical feasibility of using ProMark GNSS receivers and collectors with NTRIP technology to efficiently and effectively register all SABESP equipment in real time with geo-referenced attributes connected to the technical and commercial enterprise systems to optimize processes and reduce costs.”
To implement the LigGeo and CadGeo projects, SABESP purchased 50 ProMark 120 and 220 GNSS receivers from Hezolinem Equipamentos Topograficos, Spectra Precision’s Brazil dealer. Both SABESP technicians and outsourced service providers will use the receivers.
ProMark 120/220 GNSS receivers were chosen for their multiple advantages: They could be purchased as rovers only; they could run LigGeo and CadGeo proprietary software; they are compatible with local third-party networks, including CEGAT, Brazil’s largest private RTK geodetic base network, that delivers RTK network corrections enabling real-time accuracy of less that 20 cm; and they offered direct two-way 3G communication of information with the SABESP central cartographic base raster files.
About Hezolinem Equipamentos Topograficos
In business for 38 years, throughout Brazil, Hezolinem Equipamentos Topograficos rents and sells geodetic survey and aerial photogrammetric equipment and software. The company established and operates CEGAT, the only network of private geodetic bases in Brazil. GEGAT employs 44 Spectra Precision ProFlex 500 and 800 GNSS receivers running Geo++ software for managing the network.
About the Spectra Precision Brand
Spectra Precision is an established brand known for delivering quality products to the survey and construction markets. Focusing on the specific needs of the conventional surveying market, the Spectra Precision brand offers a complete product portfolio including Global Navigation Satellite Systems (GNSS), Global Positioning Systems (GPS), optical total stations, data collection hardware, field and office software, as well as a wide range of construction tools.
Spectra Precision surveying equipment is an economical choice that utilizes technologies for optimal efficiency. With convenience and reliability as the foundation of the Spectra Precision brand, it is an ideal choice for value. The Spectra Precision brand is backed with the strong technical support that users have come to expect from a quality name in surveying and construction.
