Dr. Amanda Foster

Last month, my neighbor called me in a panic. Her 1908 Craftsman had just tested positive for lead at 22 parts per billion, and her daughter was six months pregnant. She had been using tap water for cooking without a second thought. I spent that weekend testing water in three homes on our street, and … Read more

When my neighbor tested her well water last spring and learned it contained 23 parts per trillion of PFOA, I realized how invisible this threat really is. PFAS contamination has no taste, no odor, no color, yet millions of Americans drink water laced with these synthetic chemicals every single day. The EPA finalized strict maximum … Read more

Last summer, my well water tested positive for coliform bacteria three days after a 4-inch rain. The water looked crystal clear, tasted fine, and my dogs had been drinking it for weeks. That single test changed how I think about drinking water. It is why I spent the last two months putting together this guide … Read more

If your family drinks from a private well, you already know the peace of mind that comes with knowing exactly what is in your water. I have been testing well water for years on my own property, and nitrate is the contaminant I watch most closely. Agricultural runoff, septic system seepage, and decaying organic matter … Read more

I remember the first time I saw chalky white buildup on my showerhead and wondered if my water was the culprit. That white crust is scale, and it comes from hard water, which is water loaded with dissolved calcium and magnesium. Testing your water is the only way to know exactly how hard it is, … Read more

When my wife and I bought our first home in 2023, I thought the municipal water report was all I needed. Then a neighbor mentioned their toddler tested positive for elevated lead levels traced back to the original 1960s plumbing inside the house itself. That sent me down a rabbit hole that ended with me … Read more

Last year, I tested my kitchen tap water with a digital pH meter I picked up on a whim, and the reading came back at 5.4. That is well below the EPA’s secondary drinking water range of 6.5 to 8.5. After chasing the problem down through my city’s water report and a follow-up lab test, … Read more

Maintaining a freshwater aquarium without a reliable water test kit is like driving blindfolded. The water might look crystal clear while invisible ammonia, nitrite, or pH swings are silently stressing your fish. After testing dozens of products and comparing notes with fellow aquarists across community forums, I have put together this guide to the best … Read more

I lost my first school of neon tetras to an invisible ammonia spike back in 2018, and the only reason I still keep fish today is because I finally picked up an API test kit. That painful lesson taught me that no amount of decoration, food, or filter maintenance matters if your water chemistry is … Read more

Last summer, a friend of mine filled his travel trailer at a remote campground in Montana. Three days later, his whole family came down with stomach cramps that put them in a clinic for two days. The culprit was almost certainly their freshwater tank. That story is why I started testing every fill-up, and it’s … Read more