Peru’s housing ministry and Argentine company Benito Roggio e Hijos signed the construction contract for Stage IV of the Juliaca Comprehensive Potable Water and Sewerage Project in a report published on 30 October 2026. The US$37 million contract covers extensive water and sewerage infrastructure in Juliaca, in the department of Puno. BNamericas
Key takeaways
- Stage IV of the Juliaca project has a reported cost of US$37 million and is financed by the Inter-American Development Bank. BNamericas
- The contract includes nine reservoirs, 41 km of conveyance and intake lines, and 471 km of primary and secondary networks. BNamericas
- The company’s additional scope includes 100 km of pumping lines and main collectors, 401 km of secondary networks, and 16 pumping stations. BNamericas
- Stage IV is expected to benefit more than 370,000 inhabitants across 217 housing developments in Juliaca. BNamericas
Water and sewerage contract signed
The construction contract was signed by Peru’s housing ministry and Benito Roggio e Hijos for Stage IV of the Juliaca Comprehensive Potable Water and Sewerage Project, also identified as PIAA. The Inter-American Development Bank is financing the US$37 million stage. BNamericas
Stage IV includes construction of nine reservoirs, 41 km of conveyance and intake lines, 471 km of primary and secondary networks, and 30,800 household drinking water connections. According to the company, the scope also includes 100 km of pumping lines and main collectors, 401 km of secondary networks, 16 pumping stations, and 23,600 new wastewater connections. BNamericas
The project is intended to benefit more than 370,000 inhabitants of 217 housing developments in Juliaca, in southeastern Peru’s Puno department. BNamericas
Future wastewater plant moves toward design and bidding
At the contract-signing ceremony, Peru’s housing ministry and the Inter-American Development Bank signed a technical cooperation agreement supporting Juliaca’s wastewater treatment and storm drainage project. Its support includes consulting services to prepare the loan contract and advance the bidding process for the design and construction of a future wastewater treatment plant. BNamericas
The next procurement phase is therefore the design-and-construction tender for the future treatment plant, while the signed Stage IV contract covers the wider potable-water and sewerage works. BNamericas
Specification read
The reported population served is more than 370,000 inhabitants, but the source does not state a design flow, average or peak wastewater flow, or a population-equivalent loading. It also does not report influent BOD, COD, solids, nutrient or flow data; converting the project into m³/day or a population-equivalent treatment capacity would therefore require design inputs not provided. The 23,600 new wastewater connections are also not equivalent to a treatment capacity. BNamericas
For a wastewater plant of this class, the process train would normally need screening, primary solids removal, biological treatment and tertiary or disinfection stages; the applicable biological process could include A2/O, MBBR, SBR or UASB, with DAF or ZLD only where the effluent and residual-management requirements justify them. This project event bears directly on the future treatment plant’s design and construction tender rather than identifying a selected process or equipment package. Municipal operators can compare the required stages against the project scope, while Water Purification buyers can align treatment needs with the reported infrastructure programme.
If your plant looks like a municipal wastewater system with a flow in m³/day, BOD or COD in mg/L, and tightening discharge and service-extension requirements, this means the Juliaca tender will need a complete, capacity-verified treatment train and a clear interface with the reservoir, pumping, collection and household-connection works described in the contract. DAF vs. Clarifier for Mining Wastewater in 2026 provides additional context on solids-removal decisions, although this municipal event does not identify DAF as part of the future plant. Hotel Wastewater Treatment System Kolkata 2026: Buyer’s Guide offers another plant-scoping reference, but the Juliaca source does not describe a hotel application.
FAQ
What is the reported cost and financing of the Juliaca contract?
Stage IV of the Juliaca Comprehensive Potable Water and Sewerage Project has a reported cost of US$37 million and is financed by the Inter-American Development Bank. The reported contract value covers water and sewerage infrastructure; the source does not provide a separate equipment-purchase price or installation schedule. BNamericas
When is the future Juliaca wastewater treatment plant expected to be built?
The source reports that a technical cooperation agreement will support preparation of the loan contract and the bidding process for the future plant’s design and construction, but it does not publish a construction start date, completion date, procurement timetable or supplier-selection schedule. BNamericas
Which treatment technology will be specified?
No treatment process or equipment supplier was named. The source says the future plant must improve sanitary conditions and access to basic services, while the contracting stage includes 23,600 new wastewater connections, but it does not state whether biological treatment, tertiary treatment or disinfection will use A2/O, MBBR, SBR, UASB, DAF, ZLD or another process. BNamericas
What should suppliers verify before pricing this work?
Suppliers would need the design flow, wastewater quality, required effluent standard and treatment-process basis before quoting. The source reports 23,600 new wastewater connections and more than 370,000 inhabitants benefiting from the overall project, but it does not provide the hydraulic loading, peak-factor, BOD, COD or solids data needed to size equipment or establish a defensible lead time. BNamericas
