New Report on Nitrate Levels

A new report from the Environmental Working Group found that over 62 million Americans, roughly 1 in 5, may be exposed to potentially dangerous nitrate levels in their tap water, and the number gets worse when looking below the federal limit. The EPA's nitrate standard is 10 mg/L, set in 1962 and never updated. But a growing body of peer-reviewed research links health impacts to levels as low as 2-3 mg/L, and more than 6,000 community water systems serving 62 million people tested at or above that 3 mg/L threshold. The EWG has made the data searchable by zip code, which is worth bookmarking. On the more alarming end, 70 water systems recorded nitrate levels at or above 20 mg/L (twice the federal limit). Nearly all of the worst-performing systems are groundwater systems drawing from local wells. The recommended solution from experts quoted in the piece is point-of-use RO on the kitchen cold tap, which captures up to 99% of nitrates.

Tying directly into the nitrate story above, a local news segment out of Des Moines shows what the demand surge looks like on the ground. Brooke Haas, president of BrightWater Kinetico, says RO system installations started spiking last summer following Iowa's first-ever lawn watering ban, and "nitrate consciousness" has been driving the trend ever since. TJ Riley, owner of Iowa Soft Water, echoes the sentiment: "We know nitrates are a cause of cancer. We know they're not good for the elderly, they're not good for infants." Both dealers see RO becoming a standard home feature, with Haas comparing it to the washing machine (once a luxury, now expected). One practical note worth passing along: both experts caution customers to verify they're getting a true RO system and not a general filtration system, as counterfeits are apparently common enough to be worth flagging.

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Water Filter Guru put the Express Water RO5DX through their comprehensive testing process and came away with a generally positive verdict (although with some notable asterisks). The good: the system performed well in real-world contaminant reduction, eliminating 100% of all three disinfection byproducts, copper, fluoride, and uranium detected in the feed water, and keeping TDS creep to just 18 PPM (compared to 400+ on some tankless systems). At roughly $0.19-$0.37 per gallon ongoing, it's one of the more affordable tank-based options tested. The caveats are real though. The unit is only certified for TDS reduction despite marketing claims of reducing 158 contaminants; the efficiency ratio came in at 1:5.9 in testing, significantly worse than the claimed 1:1-3; setup took 2.5 hours to install and nearly a full day before the system was usable; and filter changes require unhooking the entire unit and another 9-hour restart process.

WCP Online covers a study published in ACS Omega showing that moringa seeds (yes, the superfood) may offer a natural alternative to chemical treatment for removing microplastics from water. Researchers found that an extract from moringa seeds works similarly to aluminum sulfate, the coagulant commonly used in water treatment plants. The mechanism is essentially the same: microplastics carry an electrical charge, and coagulants neutralize that charge, causing the particles to clump together and separate out through a sand filter. Lab testing with PVC microplastics in tap water showed removal rates comparable to aluminum sulfate under the same conditions. The next phase will test with locally sourced water samples, and researchers say the findings could offer a sustainable treatment option particularly suited to smaller communities.