Manholes are repaired and regulated to prevent infiltration, and to strengthen the structures within. Manholes are a key access point in the maintenance of the wastewater system.
Sewer manholes are often identified as round 24 to 30 inch covers, sometimes engraved with the words sewer. Their appearance can vary and they are often mistaken for storm drains.
The sewer is not meant to be used as a drainage system as this can cause a system overload, resulting in sewerage overflowing into any houses along that main.
Only the city or contractors hired by the city should operate the covers, or enter the system. The city takes the responsibility of fixing manhole covers that are damaged or missing. Property owners with manholes on their own services are responsible for maintaining their own covers.