We found 24 public water systems that could serve the same population as Duey (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| YAUCO | Yauco | 42,974 | 33 | 131 |
| Los Canos | Guanica, Yauco | 15,937 | 27 | 0 |
| Maricao | Maricao | 4,489 | 0 | 67 |
| Duey | Maricao, Yauco | 3,388 | 0 | 113 |
| Arenas | Guanica, Yauco | 2,857 | 0 | 34 |
| Indiera Alta | Maricao | 2,273 | 0 | 262 |
| Ranchera | Rancheras, Yauco | 1,560 | 0 | 56 |
| Rio Loco | Guanica, Yauco | 1,501 | 0 | 42 |
| Monte Del Estado | Maricao, Tabonuco | 973 | 0 | 88 |
| Bucarabones | Maricao | 903 | 0 | 0 |
| Fenwal International Maricao | Maricao | 700 | 0 | 0 |
| Bucarabones-maricao | Bucatabones, Maricao | 568 | 0 | 0 |
| Guaraguao | Yauco | 420 | 0 | 225 |
| Bo. Rubias | Yauco | 312 | 0 | 163 |
| Comunida Quebrada Grande | Yauco | 300 | 0 | 0 |
| Mogote | Yauco | 140 | 0 | 290 |
| Sistema De Agua Cacao | Yauco | 120 | 0 | 0 |
| La Jurada | Yauco | 105 | 0 | 0 |
| Llanadas | Maricao | 100 | 0 | 0 |
| La Josefa | Maricao | 80 | 0 | 0 |
| Aceituna | Maricao | 80 | 0 | 0 |
| La Aurora | Maricao | 70 | 0 | 0 |
| Cerrote | Yauco | 58 | 0 | 0 |
| La Montana | Yauco | 25 | 0 | 0 |