📋 Tender Overview
The National Institute of Statistics and Informatics (INEI) reported, based on the information provided by the drinking water and sewerage (Sedapal) service, which in July 2025 the production of drinking water in Metropolitan Lima reached 65 902 000 cubic meters, a higher 2.1% figure compared to the same month of the previous year; as published in the Technical Report Environmental Statistics.
Caudal grows from the Rimac and Chillon rivers
In July 2025, the Rimac river flow reached 26.31 m3/s, greater volume in 26.6% compared to the same month of 2024 and in 23.1% compared to its historical average. For its part, the Chillon River recorded an average flow of 1.50 m3/s, which meant an 8.7% increase compared to July last year; However, it was reduced by 14.3% compared to its historical average.
The flow of the North Pacific rivers increases
According to information from Senamhi, in July 2025 the rivers of the North Pacific slope presented a considerable increase in their average flow. The Calvas River reached 29.37 m3/s, with increases of 176.3% and 15.1% compared to July 2024 and its historical average, respectively. The Jequetepeque river recorded 8.10 m3/s, higher value at 132.8% compared to last year and 51.4% in relation to its historical average.
Likewise, the average flow of the Chira River reached 78.96 m3/s, a higher figure in 120.3% compared to July 2024 and in 18.0% compared to its historical average. Finally, the Tumbes River reached 39.87 m3/s, with an increase of 16.1% compared to the same month of the previous year and 8.8% in relation to its historical average.
San Borja and Santa Anita registered high levels of air pollution
According to Senamhi, in July 2025, the Lima Centro station, located in San Borja, reported high levels of concentration of inhalable particles - such as dust, soot, pollen and other solid or liquid substances suspended in the atmosphere -, which are responsible for provoking respiratory problems in the population. A similar behavior was observed at the Santa Anita station, where the concentration of air pollutants exceeded the permitted limits, causing serious health risks of people with respiratory diseases.
Tacna, Puno and Arequipa reported the lowest temperatures
The monitoring of 17 senamhi stations revealed that in July 2025 the departments of Tacna, Puno and Arequipa registered the lowest temperatures in the country. In Tacna, the feeling of cold was accentuated in Chuapalca (-18.4 deg C) and Bocatoma (-12.8 deg C). In Puno, temperatures of -16.2 deg C were reported in Mazo Cruz, -14.0 deg C in Macusani, -12.4 deg C in Santa Rosa, -11.0 deg C in Cojata, -9.0 deg C on high cruise and -7.4 deg C in Desaguadero. In Arequipa, the Imata stations (-12.0 deg C), Pillones (-11.6 deg C), Las Salinas (-10.2 deg C) and Tisco (-9.5 deg C) also recorded extremely low values.
Similarly, temperatures of -14.4 deg C were reported in Laive and -8.4 deg C in La Oroya (Junin), -7.8 deg C in Sicuani (Cusco), -6.8 deg C in Cerro de Pasco (Pasco) and at the Ubinas station (Moquegua), which did not present variation.
435 emergencies were recorded nationwide
The National Institute of Civil Defense (INDECI) reported that in July 2025 435 emergencies were registered at the national level, a higher figure in 12.1% compared to the same month of 2024. These events affected 1 413 people, damaged 2 512 homes, destroyed 162 homes and caused the loss of 1 392 hectares of crops.
The most affected departments were Cusco (66 emergencies), Apurimac (33), Cajamarca and Huancavelica (31 each), Lima and Piura (30 each), Huanuco (26), Ucayali (25), Junin (20), Amazonas (19), La Libertad (18), Ancash (16), Pasco (14), San Martin (13). (9), Tacna (8), Callao (7), Loreto (6), Ayacucho (5), Ica and Lambayeque (4 each), Moquegua and Tumbes (3 each) and Mother of God (2).
The main causes of these emergencies were the low temperatures (135), urban and industrial fires (132), strong winds (70), heavy rains (28), forest fires (20), erosions (19), landslides (12), floods (9), landslides of hills (5), swells (2) and, to a lesser extent, contamination, contamination, huayco and drought (1 each).
