https://cityh2o.com/Free city tap-water guides, contaminant explainers, water calculators and a filter finder — plus free help getting your home water tested and treated. https://cityh2o.com/guides/well-water-testing-checklist.htmlhttps://cityh2o.com/guides/well-water-testing-checklist.htmlSun, 15 Nov 2026 00:00:00 +0000Private wells aren't covered by federal drinking water rules — the owner is the water utility. What to test every year, every few years, and after floods or repairs. https://cityh2o.com/guides/water-filter-certifications.htmlhttps://cityh2o.com/guides/water-filter-certifications.htmlSun, 15 Nov 2026 00:00:00 +0000The label 'removes 99% of contaminants' means nothing without the right certification. Here's what each NSF/ANSI standard covers and how to verify a filter in two minutes. https://cityh2o.com/guides/tap-vs-bottled-water.htmlhttps://cityh2o.com/guides/tap-vs-bottled-water.htmlSun, 15 Nov 2026 00:00:00 +0000Bottled water isn't automatically safer than tap, and it can cost hundreds of times more. How the rules compare, what's in each, and when bottled makes sense. https://cityh2o.com/guides/pfas-in-drinking-water.htmlhttps://cityh2o.com/guides/pfas-in-drinking-water.htmlSun, 15 Nov 2026 00:00:00 +0000PFOA and PFOS limits stay at 4 parts per trillion, but deadlines may move to 2031. What PFAS are, how to check your utility, and which filters are proven to remove them. https://cityh2o.com/guides/lead-in-tap-water.htmlhttps://cityh2o.com/guides/lead-in-tap-water.htmlSun, 15 Nov 2026 00:00:00 +0000Lead gets into water from pipes, not the treatment plant. How to identify a lead service line, what the new 10 ppb rule means, and the steps that actually lower exposure. https://cityh2o.com/guides/how-to-read-your-water-quality-report.htmlhttps://cityh2o.com/guides/how-to-read-your-water-quality-report.htmlSun, 15 Nov 2026 00:00:00 +0000Your utility's annual Consumer Confidence Report answers most tap water questions — if you know where to look. Here's a column-by-column walkthrough. https://cityh2o.com/guides/hard-water-guide.htmlhttps://cityh2o.com/guides/hard-water-guide.htmlSun, 15 Nov 2026 00:00:00 +0000About 85% of U.S. homes have some degree of hard water. Here's how to measure it, what it does to your home, and how to decide between a softener, a conditioner or doing nothing. https://cityh2o.com/guides/cut-your-water-bill.htmlhttps://cityh2o.com/guides/cut-your-water-bill.htmlSun, 15 Nov 2026 00:00:00 +0000Leaks, old toilets and long showers cost the average household hundreds a year. Here are 12 fixes ranked by how fast they pay for themselves. https://cityh2o.com/guides/boil-water-advisory.htmlhttps://cityh2o.com/guides/boil-water-advisory.htmlSun, 15 Nov 2026 00:00:00 +0000Got a boil-water notice? How long to boil, what's safe for brushing teeth, dishes, baby formula and pets, and what to flush when the advisory lifts.