How can I avoid damage to other utilities during repairs or construction?

When digging to make sewer line repairs or for construction, it is important to know where other utilities are located to avoid damaging lines. Napa Sanitation District (NSD) belongs to a utility line locating service called Underground Service Alert (USA). Whenever a call is made to USA at 800-227-2600, NSD is notified and will come out, free of charge, to mark the location of our utility lines. Call first; it’s the law!

Sewer System Marking

Please note that NSD only marks the portion of the sewer system that is our responsibility. We do not mark the portion of the lateral that is the property owner’s responsibility.

Show All Answers

1. Who is responsible for sewer repairs?
2. How can I find out where a sewer problem is?
3. Sewage is backing up into my house/building through overflowing toilets, sinks, bathtubs, dishwasher, and/or washing machines. What should I do?
4. Sewage is overflowing from a cleanout or manhole onto the ground, driveway, street, etc. What should I do?
5. What is the difference between the sewer system and the storm drain system?
6. I have slow drainage through my toilets, showers, and sinks. What can I do about it?
7. I paid a plumber to repair my sewer lateral line. It turns out the problem was occurring in the public sewer line. Can I be reimbursed for my plumbing bill?
8. How do I proceed with a sewer lateral repair problem?
9. How can I avoid damage to other utilities during repairs or construction?
10. A contractor or utility worker broke my sewer lateral or sewer main line. What should I do?
11. Is there information available on the history or cleaning frequency of a sewer line?
12. There is a manhole cover in my neighborhood that rattles every time a vehicle drives over it. What can I do about it?
13. What can I do about terrible sewer odors?
14. How can I get a sewer clean-out installed?