What is it ?

Need help from you plumbing Gurus. This appears to be over a sewer. Is it for use by city workers or what. Anyone seen this before? “Zabel” is manufacturer of lid.

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septic tank lid

Where is it located in the yard? Is the house on septic or public? Was there an alarm inside the house for a lift pump possibly?


Did you read below WARNING?

The cover should be secured to the tank or riser with 2 SS screws