Through the year

Every week
Scrape grease into the trash, not the sink. Keep wipes, paper towels and hygiene products out of toilets.
Every month
Glance at the outdoor cleanout cap: is it intact, visible and not buried? Note any slow drains in your symptom log.
Before the holidays
Remind guests about what not to flush. Large gatherings put extra load on an aging lateral.
After a dry spell
Watch for slower drains. Roots tend to seek moisture in the pipe when the soil is dry.
Each spring
Check planters and lawn over the line for soggy or sunken spots.
Yearly or as advised
If your line has roots or a known defect, ask a plumber how often it should be inspected.

Never down the drain

  • Cooking grease, fats and oils
  • Wipes of any kind, including those labeled flushable
  • Paper towels and tissues
  • Coffee grounds and eggshells in quantity
  • Cat litter
  • Hygiene products and cotton swabs

Healthy line vs. line with known problems

Recently replaced or lined

  • Good habits are usually enough
  • Keep the after footage on file
  • Inspect if symptoms appear

Older clay or cast iron with roots

  • Track symptoms closely
  • Ask about a clearing and inspection schedule
  • Plan a lasting repair rather than repeat clearing

Planting near the line

If you are re-landscaping the front yard, find the lateral's route first. Plant trees and large shrubs away from it, and ask a nursery about root habits. Many Whittier front yards already have mature trees close to the line; you do not need to remove them, but knowing the route helps you understand the risk.

Street trees in the parkway may belong to the city. Check with the City of Whittier before pruning or removing one.

Common questions

Are enzyme drain treatments useful?

Some homeowners use them for routine maintenance. They do not fix roots, cracks or sags. Ask your plumber whether one is appropriate.

How often should a sewer line be inspected?

There is no single rule. A line with known problems may need regular checks; a new line may not need any until symptoms appear.

Does hard water affect sewer lines?

Hard water mostly affects supply pipes, fixtures and water heaters. Lateral problems are usually roots, age and soil movement.

General information for Whittier, not a quote or professional advice. In an emergency, call 911.