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Project Category: Experience in PROPER (Corporate Environmental Performance Rating Program)
Type of Work: Water Audit and Water Resource Conservation
Location: Pedungan Urban Village, South Denpasar District, Denpasar City, Bali
The Water Audit for Fuel Terminal Sanggaran focuses on assessing water use and water resource management at PT Pertamina Patra Niaga’s fuel receiving, storage, and distribution facility located in the Benoa Port area, Denpasar, Bali. As one of Bali’s strategic fuel distribution facilities, Fuel Terminal Sanggaran operates various infrastructure and supporting systems that require efficient and sustainable water management. The water audit aims to assess water demand and consumption patterns, review the condition of water supply and distribution systems, and identify conservation opportunities that can be implemented without compromising the terminal’s operational reliability or safety.
One of the key aspects of water management at Fuel Terminal Sanggaran is the water demand for its fire protection system, including jockey pump testing to maintain pressure within the firefighting network. The terminal has introduced an innovative program called PEMBALI, which reuses water from jockey pump testing by modifying the piping system to return the water to the firefighting water reservoir. This initiative is an important part of the water audit assessment, particularly when evaluating water consumption volumes, water reuse practices, supply balance, and potential water savings while maintaining the readiness of the facility’s safety systems.
Beyond operational water use, domestic wastewater management is also an important part of the environmental assessment at Fuel Terminal Sanggaran. The facility has introduced the TAMPAC ASIK innovation program (PAC Addition to the Domestic Wastewater Treatment Plant), which involves adding a coagulant during the pretreatment stage to improve the effectiveness of the Wastewater Treatment Plant (WWTP). By considering water supply systems, water reuse practices, and wastewater management, the audit is expected to provide a more measurable understanding of water resource utilization and practical conservation recommendations suited to the facility’s conditions. The findings can also strengthen environmental management documentation and support the company’s performance assessment under the PROPER program, particularly in water efficiency and pollution load reduction.
Collect the technical and administrative information needed to establish a reliable foundation for the water audit. This includes water supply documentation, historical water consumption records, piping network diagrams, water storage facility information, operational activity data, and environmental management documents. This stage also involves defining the assessment boundaries, evaluation period, and requirements for on-site data verification.
Identify the water supply sources used by Fuel Terminal Sanggaran, along with its water storage, pumping, and distribution systems. The assessment may cover water supply capacity, supply control systems, and how water is distributed to operational facilities, offices, sanitation areas, and fire protection systems based on actual site conditions.
Conduct on-site inspections of water supply and distribution infrastructure, including storage tanks or reservoirs, pumps, piping networks, connections, control valves, and water usage points. The inspection aims to assess system conditions, verify consistency with technical documentation, identify potential distribution issues, and determine which parts of the infrastructure require further evaluation.
Identify and document water consumption across office activities, sanitation facilities, maintenance operations, and other supporting utilities included in the audit scope. The assessment aims to understand water demand for each operational activity, allowing routine consumption to be distinguished from special requirements, including essential water reserves that must be maintained for terminal safety.
Review water demand and management within the fire protection system, including water reservoirs, distribution networks, firefighting pumps, and jockey pump testing. The assessment focuses on identifying water consumption during testing and maintenance activities while considering water reserve requirements, network pressure reliability, and facility safety standards.
Review the water reuse system associated with jockey pump testing, as documented under the PEMBALI innovation program. The assessment may cover water flows during pump testing, return piping systems, records of reused water volumes, and opportunities to further improve water efficiency. The evaluation should distinguish reused water volumes from new water supply to prevent double counting in the water balance calculations.
Analyze available water consumption records across different monitoring periods to identify usage patterns, changes in water demand, and potential irregular consumption. The assessment considers operational activities and water usage across supporting facilities to help identify areas where water efficiency can be improved.
Review the availability and functionality of water meters at supply sources, distribution networks, and major water usage points. The inspection may cover meter placement, completeness of consumption records, consistency of meter readings, and potential monitoring system improvements to make water consumption data more accurate and easier to evaluate.
Develop a water balance based on total water supply, consumption volumes across different facilities, changes in stored water volumes, water reuse, and outgoing water flows during the assessment period. This analysis aims to evaluate the balance between incoming and outgoing water while identifying volume discrepancies that may require further inspection or additional measurements.
Identify potential water losses by inspecting piping networks, connections, valves, storage facilities, and other water usage points. The assessment combines on-site observations with water consumption data and water balance analysis to distinguish possible physical leaks from recording discrepancies or unmeasured water consumption.
Review the relationship between domestic water consumption and the existing wastewater treatment system where included in the agreed scope of work. The assessment may consider wastewater volume data, Wastewater Treatment Plant (WWTP) processes, effluent quality monitoring results, and the implementation of the TAMPAC ASIK innovation through the addition of Polyaluminium Chloride (PAC) as a pretreatment step before the Anaerobic Filter unit. The evaluation focuses on the relationship between water consumption, wastewater flows, and the effectiveness of wastewater management.
Develop recommendations to improve water efficiency based on the assessment findings. These may include optimizing distribution systems, addressing potential leaks, improving consumption records, and expanding water reuse practices that meet technical requirements. Improvement options are prioritized based on potential water savings, estimated costs, implementation feasibility, and their impact on terminal safety and operational activities.
Prepare a comprehensive water audit report covering the condition of water supply and consumption systems, inventory findings, infrastructure assessments, consumption analysis, water balance calculations, and conservation recommendations. The report may also include follow-up action plans and monitoring indicators to support water resource management while providing documentation for the company’s environmental performance assessment under the PROPER program.
The Water Audit for Fuel Terminal Sanggaran aims to provide a technical foundation for assessing water demand, distribution, consumption, and reuse across the fuel terminal’s facilities. By considering water use in operational activities, fire protection requirements, and documented conservation initiatives, the assessment is expected to help facility management identify areas of inefficient water use and determine practical improvements suited to the terminal’s operational characteristics.
The audit findings are expected to support the development of more measurable water conservation programs, strengthen consumption monitoring systems, and contribute to operational cost control and sustainable environmental management. In addition, the audit documentation can help the company evaluate the effectiveness of its water-saving initiatives and prepare supporting information for PROPER assessments while maintaining the reliability of fuel distribution infrastructure and terminal safety systems.
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