a person who is in charge of carrying water (see Molina)
Alonso de Molina:
atlatlacuic. aguador que acarrea agua. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 8r. col. 2. Thanks to Joe Campbell for providing the transcription.