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Operating revenue (Tables)
 12 Months Ended
Dec. 31, 2022
Operating Revenue  
Revenue from sanitation services
               
   2022  2021  2020
          
Metropolitan Region of São Paulo   13,318,803    11,529,229    10,722,384 
Regional Systems   5,311,156    4,774,977    4,435,396 
Total   18,629,959    16,304,206    15,157,780 
                

 
Reconciliation from gross operating income to net operating income
               
   2022  2021  2020
          
Revenue from sanitation services (i)   18,629,959    16,304,206    15,157,780 
Construction revenue   4,863,752    4,376,739    3,716,616 
Sales tax   (1,363,628)   (1,121,905)   (1,009,358)
Regulatory, Control and Oversight Fee (TRCF)   (74,363)   (67,979)   (67,497)
Net revenue   22,055,720    19,491,061    17,797,541 

 

(i)Includes the amount of R$ 92,232 corresponding to the TRCF charged from customers from the municipalities regulated by ARSESP (R$ 80,329 in 2021).