Title: Is Your Tucson Water Filter Making You Sicker?
By Franklin Everett ShawIs your Tucson tap water really as clean as you think it is, even with that filter you installed? Many Tucsonans trust their home water filters implicitly, but complacency can lead to unknowingly drinking water that’s still contaminated. This isn’t about fear-mongering; it’s about empowering you with the knowledge to ensure your water filter is actually doing its job, specifically within the context of Tucson’s unique water challenges.
Tucson’s water supply, while generally safe, faces specific challenges. These include naturally occurring arsenic, legacy contamination from industrial activities, and the increasing presence of PFAS (Per- and Polyfluoroalkyl Substances). A generic filter might not be enough.
The first step is understanding what you’re trying to filter out. Contact the Tucson Water Department. Their website (tucsonaz.gov/water) provides detailed water quality reports, often called Consumer Confidence Reports (CCRs). These reports outline the levels of various contaminants detected in Tucson’s water supply. You can also call them directly at (520) 791-3242. Ask for the most recent CCR and any supplemental information regarding emerging contaminants like PFAS.
Don’t just skim the report. Pay close attention to the Maximum Contaminant Levels (MCLs) and the actual levels detected in Tucson’s water. This will tell you which contaminants are most prevalent and require the most attention from your filter.
Now, let’s test your filtered water. You have two primary options: professional testing and DIY test kits. Professional testing, while more expensive (typically $100-$300), offers the most accurate and comprehensive analysis. Look for a certified laboratory in Arizona. The Arizona Department of Health Services website (azdhs.gov) has a list of certified labs.
DIY test kits are more affordable (around $20-$50) and convenient, but less precise. Purchase a kit specifically designed to test for the contaminants identified in Tucson Water’s CCR, particularly arsenic and PFAS. Many kits only test for a limited range of contaminants.
Follow the test kit instructions exactly. Improper sampling or handling can lead to inaccurate results. Collect your water sample from the filtered water tap after running the water for a few minutes. This ensures you’re testing the water that’s been sitting in the filter, not just the water in the pipes.
Compare your test results to the MCLs listed in the Tucson Water CCR. If the levels of any contaminants in your filtered water exceed the MCLs, your filter is not performing adequately. Even if the levels are below the MCLs, consider whether they are low enough for your personal comfort level, especially if you have young children or other health concerns.
Choosing the right replacement filter is crucial. Don’t just grab the cheapest option at the store. Look for filters certified by NSF International (nsf.org). NSF certification means the filter has been independently tested and verified to remove specific contaminants to a certain level.
Pay attention to the NSF standards listed on the filter packaging. NSF/ANSI Standard 53 certifies filters for the reduction of health-related contaminants like lead, cysts, and volatile organic compounds (VOCs). NSF/ANSI Standard 58 certifies reverse osmosis systems for the reduction of total dissolved solids (TDS). For Tucson, look for filters certified under NSF/ANSI P473 for PFAS reduction and NSF/ANSI 53 for arsenic reduction.
Activated carbon filters are commonly used for general water filtration, but they may not be effective at removing arsenic or PFAS. Reverse osmosis (RO) systems are generally more effective at removing a wider range of contaminants, including arsenic and PFAS, but they are also more expensive and require more maintenance.
Consider a multi-stage filtration system. These systems often combine different types of filters to target a wider range of contaminants. For example, a system might include a sediment filter, an activated carbon filter, and a reverse osmosis membrane.
Don’t forget about filter maintenance. Replace your filter cartridges according to the manufacturer’s instructions. A clogged or expired filter can actually worsen your water quality by releasing trapped contaminants back into the water. Keep a log of when you replace your filters to avoid forgetting.
Many people in Tucson rely on well water. If you are one of them, the city’s water quality reports do not apply to you. Well water requires independent testing, ideally annually, to identify any contaminants present. Contact a certified laboratory for well water testing.
Arsenic is a particular concern in some areas of Tucson due to the region’s geology. Long-term exposure to arsenic can increase the risk of certain cancers. Make sure your filter is specifically certified to remove arsenic if you live in an area known for high arsenic levels in groundwater.
PFAS are another emerging concern. These chemicals are used in a wide range of products, including firefighting foam and non-stick cookware. They can persist in the environment for a long time and have been linked to various health problems. Look for filters certified to NSF/ANSI P473 to reduce PFAS levels.
One common mistake is assuming that all filters are created equal. They are not. A cheap, generic filter might remove some sediment and chlorine, but it won’t necessarily remove arsenic or PFAS.
Another mistake is neglecting filter maintenance. A clogged filter can become a breeding ground for bacteria and release contaminants back into the water. Replace your filters regularly, even if they don’t look dirty.
Don’t rely solely on your filter. While a good filter can significantly improve your water quality, it’s not a substitute for a safe and reliable water source. Stay informed about Tucson’s water quality and any potential contamination issues.
Consider installing a whole-house filter. While point-of-use filters (like faucet filters or pitcher filters) are convenient, they only filter the water at a single tap. A whole-house filter can protect all the water in your home, including the water used for showering and laundry.
Remember, water quality is an ongoing concern. Test your water regularly, maintain your filter properly, and stay informed about Tucson’s water supply. Taking these steps will help you ensure that you and your family are drinking the cleanest, safest water possible.