AT A GLANCE
Why go?
Balneario Agua Hedionda is Cuautla's signature thermal-spa complex, built around a powerful natural spring whose sulfur-rich, mineral-loaded water has drawn bathers since pre-Columbian times. Despite the literal translation of its name—'stinky water,' a nod to the unmistakable rotten-egg scent of the sulfur—the water here is prized for its therapeutic qualities, and the site has been a recognized wellness destination since it was formally inaugurated in 1928.↗↗↗
Today it is much more than a single spring: a sprawling day-spa and water park with one of the largest swimming pools in Mexico and Latin America, plus slides, a diving platform, sauna and hydromassage tubs, lockers, private pools, food service, green lawns, a jogging track and an outdoor gym. For travelers, it offers an easy, affordable half-day of soaking, swimming and relaxation in warm mineral water just outside Cuautla's center.↗↗
Water with a (Memorable) Reputation
The star of the show is the spring itself. Its waters rise from the melt of the Popocatépetl and Iztaccíhuatl volcanoes, percolating through deep rock before surging up at a steady temperature of around 27°C and a reported flow of more than 800 liters per second. That long underground journey leaves the water chlorurated and sulfated, rich in calcium, magnesium and free carbonic acid—the same mineral balance that the venue says has been studied and validated monthly by the National Autonomous University of Mexico (UNAM).
