When should I find alternatives to flushing / when is flushing not recommended?
  • If your lead service line is very long, flushing may not completely lower lead levels.
  • If your home has old (corroded) galvanized iron pipes, flushing may not be practical. If the water flows slowly in your home and you have galvanized iron pipes, these pipes may be severely corroded.

If you have a lead service line, the water may need to run for at least five minutes to significantly reduce lead levels. This may not be practical, and you may wish to consider using a water filter certified to remove ‘total lead.’ Total lead includes lead dissolved in the water, as well as lead particles that come loose from the plumbing.

Show All Answers

1. When should I flush water lines in my house?
2. Why should I flush water lines?
3. How long should I run water to flush water lines in my house?
4. How can I conserve water when flushing water lines?
5. What other ways can I flush the lead service line?
6. When should I find alternatives to flushing / when is flushing not recommended?
7. I get my drinking water from my refrigerator; does its filter remove lead?
8. What should I do if my water service line has been worked on (e.g., cut, repaired or replaced)?
9. What should I do if my lead service line has been worked on (e.g., cut, repaired or replaced)?