# Argentine water utility infrastructure and management

> Live situation record from CLSTR: https://clstr.news/situations/argentine-water-utility-infrastructure-and-management
> Updated: 2026-10-21T12:43:28.000Z. Sources: 11. Developments: 2.

Water utility operations in Argentina are characterized by significant infrastructure modernization and management transitions. In the Santa Fe province, Aguas Santafesinas S.A. (ASSA) is investing approximately $1.075 billion pesos to modernize a major water treatment plant in Rosario, involving the replacement of 60-year-old pipes and equipment to serve over one million residents.

This period also involves administrative scrutiny in Santo Tomé, where local officials have requested information regarding the transition of water and sewage services to ASSA. Concerns have been raised regarding a reported debt exceeding 6,000 million pesos owed to the provincial company and the transparency of previous rate collections.

In Buenos Aires, Agua y Saneamientos Argentinos (AySA) has completed the replacement of century-old water valves in the Villa Urquiza neighborhood. The new butterfly valves on the 1,100 mm diameter master pipes are intended to improve operational efficiency and emergency response speeds compared to the original 1917 equipment. The maintenance work resulted in temporary water supply disruptions across 15 neighborhoods.

## Claims

- AySA replaced two water valves in the Villa Urquiza neighborhood. (corroborated by 2 sources)
- The original valves were installed in 1917. (corroborated by 2 sources)
- The valves are located on master lines 9 and 10. (corroborated by 2 sources)
- The master pipes have a diameter of 1,100 millimeters. (corroborated by 2 sources)
- Traffic on Avenida de los Constituyentes and La Pampa was restricted. (corroborated by 2 sources)
- New butterfly valves require 60 to 80 turns to close. (single source)
- The old valves required 400 to 500 turns to close. (single source)
- The work affected water supply in 15 Buenos Aires neighborhoods. (single source)

## Timeline

### 2026-10-21: AySA replaces century-old water valves in Buenos Aires

AySA has replaced two 1917-era water valves in Buenos Aires' Villa Urquiza neighborhood to improve infrastructure efficiency and maintenance response.

8 sources. https://clstr.news/cluster/aysa-replaces-century-old-water-valves-in-buenos-aires

### 2026-10-13: Aguas Santafesinas expands infrastructure and manages service transitions

ASSA is investing $1.075 billion pesos to modernize the Rosario water treatment plant while facing scrutiny in Santo Tomé over a 6,000 million peso debt and service transition costs.

3 sources. https://clstr.news/cluster/aguas-santafesinas-expands-infrastructure-and-manages-service-transitions

---
Cite as: Argentine water utility infrastructure and management. CLSTR, https://clstr.news/situations/argentine-water-utility-infrastructure-and-management