**Phoenix's Pipes: Desert Air Leaching Summer Zinc?**
By Franklin Everett ShawImagine turning on your tap on a sweltering Phoenix day, expecting cool, refreshing water, and instead, getting a metallic tang. It’s not just unpleasant; it could be a sign of something more sinister lurking in your pipes. The culprit? Potentially, zinc leaching from aging galvanized steel, exacerbated by the city’s high temperatures and aging infrastructure.
This isn’t some abstract environmental concern; it’s a real issue impacting the daily lives of Phoenix residents. We’re going to dive deep into this problem, arming you with the knowledge to test your water, understand the health implications, and, most importantly, take action to protect yourself and your family. Forget vague warnings; we’re talking actionable steps you can take today.
Phoenix’s water infrastructure, like that of many older American cities, relies heavily on galvanized steel pipes. Galvanization is a process where steel is coated with zinc to prevent corrosion. However, over time, especially in areas with aggressive water chemistry (think high temperatures and certain pH levels), this zinc coating can degrade, releasing zinc ions into the water supply.
The problem is amplified in Phoenix. The city’s intense summer heat raises water temperatures, accelerating the corrosion process. Furthermore, the age of the infrastructure in many parts of the city means that the protective zinc coating has already been compromised over decades of use.
So, how do you know if your water is affected? The first step is observation. Does your water have a metallic taste? Are there white or gray deposits forming around your faucets or in your pipes? These are telltale signs of elevated zinc levels.
However, taste and visual cues aren’t always reliable. The only way to know for sure is to test your water. Fortunately, you don’t need to hire an expensive lab to get a preliminary assessment. Several DIY water testing kits are available online and at hardware stores.
Look for kits that specifically test for heavy metals, including zinc. These kits typically involve collecting a water sample and using a reagent to detect the presence of the target contaminants. While not as precise as laboratory testing, they provide a good indication of whether zinc levels are within acceptable limits.
One popular and relatively affordable option is the Safe Home DIY Essential Water Test Kit. It tests for a range of contaminants, including lead, copper, and, crucially, zinc. The kit is easy to use, and you mail the sample to a certified lab for analysis. While it’s not instant, the results are more accurate than simple test strips.
Another option is the Watersafe Drinking Water Test Kit. This kit uses test strips to provide immediate results for various parameters, including pH, hardness, and the presence of certain metals. While less precise than lab testing, it’s a quick and easy way to get a general sense of your water quality.
Remember to follow the instructions carefully when using any DIY testing kit. Improper sample collection or handling can lead to inaccurate results. Always collect the sample from a faucet that is frequently used, and let the water run for a few minutes before collecting the sample to flush out any stagnant water in the pipes.
Now, let’s talk about the health implications. The EPA sets a secondary maximum contaminant level (SMCL) for zinc at 5 mg/L (milligrams per liter). This isn’t a legally enforceable standard like the Maximum Contaminant Level (MCL), but it’s a guideline for aesthetic concerns like taste and odor.
While zinc is an essential nutrient, excessive intake can lead to adverse health effects. High levels of zinc in drinking water can cause:
- A metallic taste.
- Gastrointestinal distress, including nausea, vomiting, and diarrhea.
- Interference with copper absorption, potentially leading to copper deficiency.
The elderly, infants, and individuals with certain medical conditions may be more susceptible to the effects of elevated zinc levels. If you suspect that your water is contaminated with zinc and you are experiencing any of these symptoms, consult with your doctor.
What if your test results indicate elevated zinc levels? Don’t panic. There are several affordable water filtration systems that can effectively remove zinc from your drinking water.
One of the most effective methods for removing zinc is reverse osmosis (RO). RO systems use a semi-permeable membrane to filter out contaminants, including heavy metals like zinc. These systems are typically installed under the sink and provide purified water for drinking and cooking.
A popular and highly rated RO system is the APEC Water Systems ROES-50. This system is certified to remove a wide range of contaminants, including zinc, lead, and arsenic. It’s relatively easy to install and maintain, and it provides a consistent supply of clean, purified water.
Another option is a whole-house water filter. These filters are installed on the main water line and filter all the water entering your home. While they may not remove as much zinc as an RO system, they can significantly reduce the overall zinc concentration in your water supply.
Consider the Aquasana EQ-600. This whole-house filter system is designed to reduce sediment, chlorine, and other contaminants, including heavy metals. It’s a good option if you want to improve the overall quality of your water supply and reduce the risk of zinc exposure.
Activated carbon filters can also remove some zinc, but they are generally less effective than RO systems or whole-house filters. However, they are a more affordable option for those on a budget. Look for activated carbon filters that are specifically designed to remove heavy metals.
It’s crucial to maintain your water filtration system properly. Replace the filters regularly according to the manufacturer’s instructions. This will ensure that the system continues to effectively remove zinc and other contaminants from your water.
Beyond filtration, there are other steps you can take to minimize your exposure to zinc in drinking water.
- Flush your pipes: Before using water for drinking or cooking, let the water run for a few minutes to flush out any stagnant water in the pipes. This is especially important if the water has been sitting in the pipes for several hours.
- Use cold water: Hot water is more likely to leach zinc from galvanized steel pipes. Use cold water for drinking and cooking whenever possible.
- Replace old pipes: If you have galvanized steel pipes in your home, consider replacing them with copper or PEX pipes. These materials are less likely to leach zinc into the water supply. This is a significant investment, but it can provide long-term peace of mind.
The city of Phoenix also has a responsibility to address the issue of aging infrastructure and water quality. Residents should contact their local representatives and advocate for infrastructure improvements and more stringent water quality monitoring.
Don’t just accept potentially contaminated water as a fact of life. Take control of your water quality. Test your water, understand the risks, and invest in a water filtration system that meets your needs. By taking these steps, you can protect yourself and your family from the potential health effects of elevated zinc levels in your drinking water. It’s about ensuring that when you turn on the tap, you get clean, safe, and refreshing water – every time.