Shashank Varma - Mr Water Geek

Pediatricians don't say buy bottled water, they say test for lead. CDC: "no safe level in a child's blood." EPA: 15 ppb (10 in 2027) is a utility trigger, not a health line. Lead gets in after the report; only a home test catches service line, solder & brass. Not medical advice.

Your utility's water report stops at the curb. It covers the plant & the mains, not the pipe into your house. The lead ban is 1986, but states had 2 years to apply it, so the safe line is built or replumbed after 1988. Before that it's the city & the year, & no report says.

Hard water won't hurt you, it just costs you. The number is grains per gallon: under ~7 you'll barely notice, over 10 you will, over 15 a softener pays for itself. Your utility already measured it (free). & a softener removes zero lead or PFAS - it protects pipes, not you.

Plastic particles turned up in 81% of tap water samples across 14 countries (Kosuth, PLOS ONE 2018) - US samples had the most. Most are 1-5 microns. A "nominal" 1-micron filter catches ~85-90% of them; an "absolute" one ~99.9%. Most pitchers state neither, i.e. taste filters.

5-year cost to filter 730 gal/yr, hardware + cartridges (typical ranges): 1. Faucet-mount $495-675 2. Under sink carbon $600-740 3. Pitcher $635-935 4. Under sink RO $850-1,050 The $35 pitcher costs more to own than the $250 under sink unit. Hardware is ~1/4 of every row.

Moving in? The water in those pipes sat still while the house was empty & metals leach into standing water. Day one: run every cold tap (5 min on the lowest floor) & the hot until the tank turns over. Then scratch the service line with a coin - shiny silver & no magnet = lead.

NSF certification is per cartridge, not per machine. The housing certifies nothing; the block tested in it does. A replacement that fits isn't a replacement that's certified - & over 5 years cartridges are ~3/4 of what a filter costs you, so that's where the corner gets cut.

Chlorine itself isn't what to worry about in tap water. It reacts with organic matter in the pipes & forms THMs & HAAs - EPA caps them at 80 & 60 ppb for long-term cancer risk. NSF 42 (most pitchers) only removes the chlorine taste. For the byproducts you need NSF 53.

Water symptoms, ranked. Test the top 3: 1. Metallic taste in the morning 2. Blue-green stains 3. Rotten eggs, hot & cold, on a well 4. Cloudy, stays cloudy 5. Rotten eggs, hot only 6. Rotten eggs, one sink 7. Orange or brown 8. Chlorine smell 9. Pink film 10. Cloudy, clears

Under sink filters are the best point-of-use option you can buy. They also waste 3-4 gallons per gallon if RO or expire invisibly and re-deposit pollutants if carbon. Wrote about five problems the industry won't fix below.

A $35 pitcher can cost more over 5 years than a $300 under sink filter. Pitcher cartridge = ~40 gallons. Under sink carbon block = 500-1,000. A household drinks 2-4 gallons a day. Do the gallons first - the cheapest box is seldom the cheapest thing to own.