📋 Tender Overview
The regulator requested records and documentation to verify the control of residual chlorine and guarantee the effectiveness of chlorine in the water consumed by the population.The National Superintendency of Sanitation Services (Sunass), through official letter No. 00101-2026-SUNASS-DF-SOEP, requested information from the providing company Sedacaj S. A. after becoming aware of the discovery of DPD reagents with an expired expiration date in the warehouse of the Contumaza administration, detected during a control visit carried out by the Comptroller General of the Republic of Peru.
According to the control report, these reagents, used to measure the level of free residual chlorine in water, could generate risks in the reliability of the results of disinfection monitoring if they are used after expiration. Adequate control of this parameter is essential to ensure the quality of the drinking water distributed to the population.
Given this situation, Sunass asked the providing company to send, within a period of two business days, detailed information that allows verifying the adequate control of the disinfection process and the management of the DPD reagent used for monitoring residual chlorine.
Sunass asked the provider company to send the free residual chlorine measurement records after the disinfection process corresponding to February 2026, as well as the information on the DPD reagent used for this control, including brand, batch number and expiration date, in order to verify the reliability of the water disinfection monitoring results.
Likewise, it required the inventory and control record of DPD reagents from the Contumaza warehouse, along with purchase orders, invoices or certificates of conformity linked to their acquisition. It also requested the current procedures or instructions for the requirement and use of these reagents, in addition to reporting on the measures adopted or planned by the company to strengthen the control and proper use of these supplies.
Sunass specified that this requirement is carried out within the framework of its supervisory functions established in Legislative Decree No. 1280, Law of the Universal Drinking Water and Sanitation Service and its regulations, with the objective of verifying compliance with the conditions that guarantee the adequate provision of the service.
Likewise, he recalled that not sending the requested information, doing so incompletely or outside the established deadline may constitute an administrative violation, in accordance with the current inspection regulations.
Sunass reiterated that it will continue to carry out the necessary supervisory actions to guarantee that the population receives drinking water and that the providing companies comply with their obligations in order to distribute water for human consumption.
