Why do blown toilets happen?

When our crews are cleaning the sewer mains they are using high-pressure hoses that spray water in the sewer main. This can cause high air pressure or negative air pressure in the sewer main and sewer service lines that connect to the house plumbing. If a house does not have adequate sewer vents, which are usually vented through the roof, the excess air pressure can cause water to be blown out of the toilets or p-traps in the home. If your toilet is blown, please contact the equipment operator or call 509-477-1984.

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1. What number do I call for a sewer spill, backup, or other sewer-related emergency?
2. How do I report a noisy or missing manhole lid?
3. There is water coming out of a storm drain lid or the catch basin is clogged on my street. Who do I call?
4. I have requested a utility locate. When will the sewer lines be marked?
5. Can I dump automotive, household chemicals or other materials down the drain?
6. How do I report a blown toilet?
7. Why do blown toilets happen?
8. How often are the sanitary sewer main lines cleaned?
9. My sewer service line is broken or blocked. Who is responsible?
10. My basement was flooded with sewage. Who is responsible for cleaning it up?
11. I can smell sewage in or around my home. What causes this?
12. Why can’t I flush ‘flushable’ wipes?
13. How often are the sewer main lines inspected?
14. My wedding ring was flushed down the toilet. Can the County get it back?
15. How do I request a pre-pave sewer inspection?
16. What if there is a dead deer in the road?
17. How can I find out what water district I am in?