Taos Tap: Altitude Lies Crashing Copper Savings?

By Franklin Everett Shaw

March 5, 2026

Imagine turning on your tap, expecting crystal-clear water, only to be greeted by a disconcerting blue-green tint. For many residents of Taos, New Mexico, this isn’t a hypothetical scenario; it’s a reality stemming from the town’s unique water chemistry and aging infrastructure. The culprit? Copper leaching into the water supply, a problem exacerbated by Taos’s high altitude and the corrosive nature of its water.

This isn’t just about aesthetics; it’s about potential health risks, especially for long-term residents. We’re diving deep into the “Taos Tap” issue, providing you with the knowledge and tools to protect yourself and your family.

First, let’s understand the problem. Taos’s water source, primarily mountain snowmelt, is naturally soft and slightly acidic. This acidity, combined with the town’s aging copper pipes, creates a perfect storm for copper leaching. The higher altitude also plays a role, as lower atmospheric pressure can increase the corrosivity of water.

So, how do you know if your home is affected? The first step is testing your water.

Here’s a step-by-step guide:

Choose a certified lab: Don’t rely on cheap, unreliable test kits from hardware stores. Instead, contact the New Mexico Environment Department or search online for certified water testing labs in your area. Look for labs certified to test for copper and other heavy metals. A reputable lab will provide you with specific instructions and a sterile sample container.
Follow the instructions carefully: The lab will provide detailed instructions on how to collect your water sample. This usually involves running the cold water tap for a few minutes to flush the pipes, then collecting the sample in the provided container. Avoid touching the inside of the container to prevent contamination.
Submit the sample promptly: Time is of the essence. Submit your sample to the lab as soon as possible after collection, following their specific instructions for storage and transportation.
Understand the results: The lab will provide you with a report detailing the levels of various contaminants in your water. Pay close attention to the copper level and compare it to the EPA’s Maximum Contaminant Level (MCL) for copper, which is 1.3 mg/L (or 1.3 parts per million).

Now, let’s say your test results confirm elevated copper levels. What are your options? Filtration is key. But not all filters are created equal.

Here’s a breakdown of filtration systems, considering cost and effectiveness:

Pitcher Filters (e.g., Brita, PUR): These are the most affordable option, but they are also the least effective for removing copper. They primarily target chlorine and taste/odor issues. Don’t rely on these for copper removal.
Faucet Filters: These attach directly to your faucet and offer slightly better filtration than pitcher filters. However, their capacity is limited, and they may not be sufficient for homes with high copper levels. Look for filters specifically certified to remove copper.
Under-Sink Filters: These filters are installed under your sink and provide filtered water through a dedicated faucet. They offer a good balance of cost and effectiveness. Look for filters that use activated carbon or reverse osmosis technology and are certified to remove copper.
Whole-House Filters: These filters are installed on your main water line and filter all the water entering your home. They are the most expensive option but provide the most comprehensive protection. Consider a whole-house filter if you have consistently high copper levels or are concerned about other contaminants.

Reverse Osmosis (RO) systems are particularly effective at removing copper and other heavy metals. They work by forcing water through a semi-permeable membrane, which filters out contaminants. However, RO systems can be more expensive and require regular maintenance. They also remove beneficial minerals from the water, so you may want to consider remineralization options.

Activated Carbon filters are another good option for copper removal. They work by adsorbing contaminants onto the surface of the carbon. Activated carbon filters are relatively inexpensive and easy to maintain.

Choosing the right filter depends on several factors:

Your budget: Pitcher filters are the cheapest, while whole-house filters are the most expensive.
Your water usage: If you only need filtered water for drinking and cooking, an under-sink filter may be sufficient. If you want filtered water for showering and laundry, a whole-house filter is a better option.
Your copper levels: If your copper levels are only slightly elevated, a faucet filter or under-sink filter may be sufficient. If your copper levels are very high, you may need a reverse osmosis system or whole-house filter.
Certification: Always look for filters that are certified by a reputable organization, such as NSF International, to ensure that they meet performance standards.

Now, let’s talk about the potential health impacts of copper exposure. While copper is an essential nutrient in small amounts, excessive exposure can lead to health problems.

Short-term effects: These can include nausea, vomiting, diarrhea, and stomach cramps.
Long-term effects: These can include liver damage, kidney damage, and neurological problems. Children and infants are particularly vulnerable to the effects of copper exposure.

Mitigation strategies for long-term residents:

Regular water testing: Test your water at least once a year to monitor copper levels.
Install a certified water filter: Choose a filter that is appropriate for your needs and budget.
Flush your pipes: Run the cold water tap for a few minutes each morning to flush out any copper that may have leached into the water overnight.
Use cold water for drinking and cooking: Hot water is more likely to leach copper from pipes.
Consider replacing copper pipes: If your copper pipes are old and corroded, consider replacing them with PEX or CPVC pipes, which are less likely to leach copper. This is a significant investment, but it can provide long-term peace of mind.
Dietary considerations: Ensure you’re getting adequate zinc in your diet, as zinc can help counteract the effects of copper toxicity. Consult with a healthcare professional or registered dietitian for personalized advice.

Common mistakes developers face (and how to overcome them):

Ignoring the problem: Many developers are unaware of the copper leaching issue in Taos. Educate yourself and your team about the potential risks.
Using cheap plumbing materials: Opt for high-quality, corrosion-resistant plumbing materials, such as PEX or CPVC.
Failing to install proper grounding: Proper grounding can help prevent corrosion in copper pipes.
Not providing residents with information about water testing and filtration: Inform residents about the potential risks of copper exposure and provide them with resources for testing and filtration.

Real-world application:

Consider the case of Maria, a long-time resident of Taos. She had been experiencing unexplained stomach problems for years. After learning about the copper leaching issue, she tested her water and found that her copper levels were significantly elevated. She installed a whole-house filter and her stomach problems gradually disappeared.

Actionable insights:

Don’t assume your water is safe: Test your water regularly, especially if you live in an older home with copper pipes.
Invest in a certified water filter: Choose a filter that is appropriate for your needs and budget.
Be proactive about your health: If you are experiencing symptoms that you think may be related to copper exposure, consult with a healthcare professional.

The “Taos Tap” issue is a real concern, but with the right knowledge and tools, you can protect yourself and your family. Don’t wait until you see that blue-green tint; take action today to ensure the safety of your water. Remember, informed action is the best defense.