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Hi. I'm Marco.

Your free pool guy. Test your water and I'll tell you if it's ready to swim, what to add, and exactly how much.

Free. On the web now; iPhone coming soon.

Marco: needs a little help, add chlorine first
My water: each reading on a simple gauge

Can I swim?

Log a test with a tap for each reading. Marco says swim-ready, needs a little help, or hold off.

One step at a time

What to add first, how much for your pool's size, and why. Then the next step.

Ask Marco

Cloudy, green, a pH that won't stay put: ask about your pool and get an answer for your water.

Find a pro

A new pool, a resurface, weekly service or a repair. Marco asks a few questions and sends it to one Waterline pro near you.

Your details stay yours

You decide who hears from you.

  • A pro gets your project and contact details only when you tick the box and press send.
  • Offers from pool companies near you are your choice, off unless you turn them on. At most 2 a month, and your email and phone stay private until you answer one.
  • Share your tests with your pool company only if you want to. Stop any time.

Marco's amounts are guides for your pool's size. Follow the label on every product, handle chemicals safely, and ask a pro when you're unsure.

Find a pro: pick what you need
Offers from pool companies near you
Marco giving a thumbs up

Your pool, sorted.

Run a pool company? See Waterline.