Anyone who lives in Monterrey will eventually mention water. Not in conversation about climate or politics — in everyday context. “Did the water come on this morning?” “Have they restarted the tanda?” “Is your colonia still on rotation?” The drought of 2022 changed the texture of daily life here in a way that has not fully reset four years later, and a visitor who understands what is happening will read the city more accurately.
What happened
Monterrey draws most of its water from three reservoirs in the Sierra Madre: La Boca, Cerro Prieto, and El Cuchillo. In a normal year, the late-summer rainy season refills them. In 2021 and 2022, the rains failed almost completely. By the summer of 2022, La Boca and Cerro Prieto were both below five percent of capacity. Cerro Prieto effectively dried up. El Cuchillo, the largest, was below fifteen percent.
The state government implemented severe rationing. Most of the metro was placed on a tanda system — municipal water supplied to each colonia for a few hours per day, sometimes only every other day. Industry was cut more aggressively, which created its own economic shock. Residents queued at filling stations with five-gallon jugs. Hotels and restaurants posted signs asking guests to limit showers. The crisis dominated the news for months.
Why it happened
The honest answer is that Monterrey’s water supply was always tighter than its population suggested. The city sits in a semi-arid valley with rainfall about half that of Mexico City. The reservoir system was built to handle a population of a million people; the metro is now five million. Industrial demand grew faster than residential. Climate change shifted the late-summer rains north and made them more erratic. The 2022 drought was the trigger, but the underlying fragility had been building for thirty years.
There were also infrastructure issues. The water-distribution network has substantial leakage — estimates run from twenty to thirty percent of treated water lost between the reservoirs and the tap. Some of this is colonial-era pipe; some is more recent failure that was never repaired. The crisis exposed all of it.
What the city did
Several major projects launched simultaneously in 2022 and 2023. The most important is the El Cuchillo II pipeline, which doubles the flow from the El Cuchillo reservoir into the metro — this came online in late 2023 and is a significant new source. A desalination project on the Gulf Coast in Tampico is under construction and intended to add a major new supply by 2027. The CONAGUA system has been adding wells across the metro perimeter.
On the demand side, San Pedro and several other municipalities adopted strict water-use codes — mandatory drought-tolerant landscaping in new developments, restrictions on residential pools, audits on industrial users. None of this is dramatic individually; collectively, it has slowed the rate of growth in demand.
What it looks like now
As of mid-2026, the system is functional but tight. La Boca and El Cuchillo refilled through the 2024 and 2025 rainy seasons; Cerro Prieto remains below historical averages. The tanda system is mostly retired in the central municipalities, although a few outer colonias still rotate. Most visitors will not notice anything — hotels have full water service, restaurants operate normally, and the public infrastructure of San Pedro and Centro is unaffected.
What you will notice if you look: most upper-middle-class homes now have a cisterna — a private storage tank, usually on the roof, that buffers against any interruption. Many homes also have a pipa account — a contracted water-truck delivery service. These were uncommon before 2022 and are now standard. The aesthetic shift in the residential streets is genuine.
For natural-area conditions and the broader regional ecology, santuariosnaturales.com and zonasverdes.com.mx track the situation across northeastern Mexico. The Cumbres de Monterrey watershed feeds Cerro Prieto and is the most consequential ecological unit for the city.
What a visitor should do
The honest answer is almost nothing — tourism is not the relevant water user. Take normal-length showers. Refill a water bottle rather than buying single-use plastic. Drink the tap water if your hotel is reputable (most of San Pedro’s major hotels treat tap water; ask if you are uncertain). Tip generously at restaurants where the kitchen staff are working through what used to be daily uncertainty about supply.
What you should not do is moralize. The drought was not caused by tourist behavior; the recovery will not be solved by it. The water crisis is a serious civic story, and the city has been working through it competently. A visitor’s role is to pay attention, not to perform conservation theater.
The longer view
What 2022 made visible was that Monterrey’s growth model — a desert city scaling to five million people on an industrial economy — has hard physical limits. The desalination plant, the pipelines, and the demand-side reforms will buy time. They will not, on their own, resolve the underlying tension between climate, geography, and population that the city now has to live with.
This is part of why the conversation about water is so ubiquitous here. It is not nostalgia or alarmism. It is the practical, daily texture of living in a place that has just realized its own physical constraints. A visitor who notices this will understand more of what is being talked about at the table than a visitor who does not.
