Locate the interruption
Which drains are affected?
A kitchen sink that empties slowly after cleanup may present a different problem from a tub receiving backed-up water. Look at the pattern you have already noticed: one fixture, several in the same room, or drains in different parts of the home. Include when the problem first appeared.
Let the office know if wastewater is coming back into a fixture or spreading beyond it. Stop using a fixture that is overflowing. For a returning problem, mention the previous cleaning and whether flow improved fully, improved briefly or never returned to normal.
