We have compiled for you all results from the 2021 South American Championships (Campeonato Sudamericano de Deportes Acuaticos) held in Buenos Aires, Argentina, from March 16-19.
Solo
| Rank | Nation | Swimmer | Technical Score | Free Score | Total Score |
| 1 | Colombia | Monica Arango | 80.3152 | 81.7083 | 162.0235 |
| 2 | Brazil | Jullia Catharino | 78.7802 | 81.2250 | 160.0052 |
| 3 | Argentina | Camila Arregui | 75.3554 | 75.6583 | 151.0137 |
| 4 | Chile | Isidora Letelier | 74.2726 | 76.7167 | 150.9893 |
| 5 | Peru | Tania Patino | 70.5984 | 70.8667 | 141.4651 |
Duet
| Rank | Nation | Swimmers | Technical Score | Free Score | Total Score |
| 1 | Colombia | Estefania Alvarez, Monica Arango | 79.4857 | 83.000 | 162.4857 |
| 2 | Brazil | Luisa Borges, Laura Miccuci, Maria Bruno (R) | 79.8358 | 82.2167 | 162.0525 |
| 3 | Argentina | Camila Arregui, Trinidad Lopez Brasesco | 76.1384 | 78.1083 | 152.2467 |
Mixed Duet
| Rank | Nation | Swimmers | Technical Score | Free Score | Total Score |
| 1 | Colombia | Jennifer Cerquera, Gustavo Sanchez | 75.7376 | 80.5167 | 156.2543 |
| 2 | Peru | Alvaro Gonzalo Arones, Sandy Quiroz | 69.8716 | 77.2083 | 147.0799 |
| 3 | Brazil | Fabiano Ferreira, Anna Giulia Veloso | 69.8615 | 76.3250 | 146.1865 |
| 4 | Argentina | Bruno Lazzaro, Delfina Seco | 68.0003 | 71.3333 | 139.3336 |
Team
| Rank | Nation | Swimmers | Technical Score | Free Score | Total Score |
| 1 | Colombia | Alvarez, Arango, Castaneda, Ceballos (RF), Cerquera, Franco, Jaramillo, Orozco (RT), Taborda, Barrera (R) | 78.1684 | 80.8667 | 159.0351 |
| 2 | Brazil | Bruno, Casale, Catharino, Coutinho, Dos Santos, Passos, Teixeira, Veloso, Da Silva (R), Garcia (R) | 77.2923 | 80.1333 | 157.4256 |
| 3 | Argentina | Arregui, Bonucci, Caussi, Ferrer M, Ferrer Z, Houitte de la Chesnais, Lopez Brasesco, Re Ruiz, Garcia (R), Marchetti (R) | 74.0755 | 76.0000 | 150.0755 |
| 4 | Chile | Alvarez (RF), Garcia S, Garcia T, Letelier, Massoni (RT), Mella, Morales, Valdivia, Vargas, Carrier (R) | 73.9094 | 74.6500 | 148.5594 |
| 5 | Peru | Ccoyllo, De la Cruz (RT), Lopez, Luna (RF), Moran, Paredes, Patino, Quiroz, Toulier, Calixto (R) | 70.1232 | 71.6667 | 141.7899 |
Free Combination
| Rank | Nation | Swimmers | Score |
| 1 | Brazil | Bruno, Casale, Catharino, Coutinho, Da Silva, Dos Santos, Garcia, Passos, Teixeira, Veloso | 80.7250 |
| 2 | Colombia | Alvarez, Arango, Castaneda, Ceballos, Cerquera, Franco, Jaramillo, Orozco, Quintero, Taborda, Barrera (R) | 79.0500 |
| 3 | Argentina | Arregui, Bonucci, Caussi, Ferrer M, Ferrer Z, Garcia, Houitte de la Chesnais, Lopez Brasesco, Marchetti, Re Ruiz, Migliaccio (R) | 75.9583 |
| 4 | Peru | Calixto, Ccoyllo, De la Cruz, Lopez, Luna, Moran, Paredes, Patino, Quiroz, Toulier | 71.0583 |
Highlight
| Rank | Nation | Swimmers | Score |
| 1 | Colombia | Alvarez, Arango, Castaneda, Ceballos, Cerquera, Franco, Jaramillo, Orozco, Quintero, Taborda, Barrera (R) | 82.1167 |
| 2 | Brazil | Bruno, Casale, Catharino, Coutinho, Da Silva, Dos Santos, Garcia, Passos, Teixeira, Veloso | 81.5250 |
| 3 | Argentina | Arregui, Caussi, Ferrer M, Ferrer Z, Garcia, Houitte de la Chesnais, Lopez Brasesco, Marchetti, Migliaccio, Re Ruiz, Bonucci (R) | 76.9333 |
| 4 | Peru | Calixto, Ccoyllo, De la Cruz, Lopez, Luna, Moran, Paredes, Patino, Quiroz, Toulier | 71.9917 |
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