Water filtration on the Oaxaca coast
Our own installer covers Puerto Escondido, Mazunte, Zipolite, San Agustinillo and Huatulco. Here is what the monitoring readings along the coast actually show, which Acuario system fits, and how an installation works.
What the water is like on the Oaxaca coast
The AguaScore map holds 31 monitoring points on this coast, almost all sampled in 2026 — stations on the rivers and lagoons that feed the coast (Tonameca, Copalita, Zimatán, Cozoaltepec, Manialtepec, Colotepec) plus Santa María Huatulco. They describe the water in the landscape, not the water in your tap.
Monitoring points scoring “poor”
42% of the points score “poor” and 14 score “good”; the average AguaScore is 72, a little above the national 69. The spread is the point: quality on this coast changes from one river valley to the next.
Lead readings over the 10 µg/L guideline
Where lead was measured, nearly half the readings exceed the WHO guideline of 10 µg/L (median 9.7). Arsenic is mostly low — a median of 6 µg/L — with isolated high readings.
Median hardness: hard, not extreme
Moderately hard to hard water (average 129 mg/L), with a pH around 8. Most homes here store water in a tank or cistern, and that storage is where water quality is won or lost.
Source: the AguaScore water quality map — 31 monitoring points in this area (river and lagoon monitoring stations, 2020–2026). These are readings at the points, not at any one tap; municipal water is treated when it leaves the plant and can change on the way to your tank. Test your own water before choosing a system.
Which Acuario system fits
Every Acuario system purifies by electrolysis: no chemicals, no wasted water, and the natural minerals stay in the water. The choice is about how much of the house you want treated.
Whole-home: ARC-1 and ARC-2
Every tap in the house — showers, kitchen, laundry — purified where the water comes in. ARC-1 covers a home up to about 4,000 sq ft; ARC-2 is built for larger properties. Where the water is hard we pair it with the Zero Sarro anti-scale filter, which cuts scale without stripping the water of its minerals.
Under-sink: ION
One tap of purified drinking and cooking water, fitted under the kitchen sink. The right start for a rental or a small home, and the answer when the concern is what you drink rather than what you shower in.
Send us a photo of where the water comes into the house and, if you have one, your own lab reading. We will name the system and tell you plainly what it does with each thing in your water — and what it does not.
Our installer covers the coast
An Acuario technician comes to your home, fits the system, tests the water with you and comes back for service.
- Puerto Escondido
- Mazunte, Zipolite and San Agustinillo
- Huatulco
- and the coast between them
Tell us about your water and your house
The quote form or a WhatsApp message is enough to start. Photos of the tank, the pipe where the water comes in and the rooms it feeds let us recommend the right system without a visit.
Our installer comes to you
An Acuario technician in the Oaxaca coast fits the system, tests the water with you and explains the maintenance. Standard plumbing connections, no construction.
Service from the same team
Filter changes and service visits are done by the installer you already know. Replacement filters also ship to your door.
Questions people on the Oaxaca coast ask
Tap any question to see the answer.
Yes. Our own team installs in Puerto Escondido, Mazunte, Zipolite, San Agustinillo, Huatulco and along the coast between them. For everywhere else in Mexico, see where we deliver and install.
It varies by town and by source — a well, a spring, a municipal line or a delivery truck — and it changes in storage. The readings above are from rivers and lagoons, not from any tap. Test your own water first; we can help you read the result.
Yes. Acuario systems treat the water where it enters the house, whatever its source. Tell us how your water arrives and where it is stored, and we will recommend the right setup.
No. Electrolysis purification keeps the natural minerals in the water. Where hardness is a problem we add the Zero Sarro anti-scale filter, which reduces scale without stripping the water.
A technician fits the system where the water enters the house, or under the kitchen sink for the ION, with standard plumbing connections — no construction. They test the water with you and explain the maintenance before they leave.
The same installer does filter changes and service visits. Replacement filters also ship to your door.
Ready for better water in the Oaxaca coast?
Tell us where you are and what your water is like. We answer in English or Spanish.