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Tecnología y ciencias del agua
On-line version ISSN 2007-2422
Abstract
MONTESILLO-CEDILLO, José Luis. Actualización tarifaria del servicio de agua potable en México: una propuesta metodológica. Tecnol. cienc. agua [online]. 2020, vol.11, n.3, pp.236-276. Epub June 10, 2024. ISSN 2007-2422. https://doi.org/10.24850/j-tyca-2020-03-07.
The objective of the present investigation was to demonstrate that rates update of the drinking water service in Mexico based on the annual variation of the National Consumer Price Index (NCPI), methodologically and theoretically is erroneous, and substantiate the use of the variation of the National Producer Price Index (NPPI) of sector 22. The differences and economic effects of updating drinking water service rates with NCPI respect NPPI were highlighted; the main theoretical properties of each of these indices were compared; it was emphasized that NCPI is not designed to capture the variation in production costs required by the operator organism; the index is a national average and therefore does not reflect regional or state differences, let alone municipal differences; drinking water service is part of the weightier of that index, hence the increase in service tariffs contributes to rising inflation and, overestimates inflation by about 1% per year, because methodologically cannot include the replacement effect of new goods or quality increases in goods and services. Finally, it was concluded that the NPPI of Sector 22, whose main purpose is the measurement of supply-side inflation, is the most appropriate index for updating drinking water service rates.
Keywords : Mexico; drinking water service; tariff update; National Consumer Price Index (NCPI); National Index of Producer Prices (NIPP).