I use hot water to heat up my cappuccino cups every morning. I've noticed that there is sediment in the bottom of the cup. Looks like fine coffee grounds. I clean the machine every day, back flush and purge some hot water and it's still there.

Any ideas?

Are you using non-scaling water?

Yes, that's it.

I'm using the Homeland water filter.

Thanks.

How can I avid the sediment? Run more water through the system?