I and I
I and I Regulation |
| |
Section 921 of the City's Codified ordinances deals with regulating sewer
flows. The purpose of having I and I regulations is to keep clean water clean and sewage
limited to just that, sewage and "grey water". Keeping the sewers separate minimizes costs
for sewage treatment at our plant, and reduces the likelihood for sewer backups. |
| |
|
|
| |
|
Inflow is a direct connection of clear water into the wastewater collection
system. |
| |
|
| |
|
Infiltration is an indirect connection of clear water to the wastewater system. |
| |
|
| |
Inflow |
| |
|
Inflow is usually traced to sump pumps (used by many homeowners to keep groundwater out
of basements), roof downspouts, and foundation drains (aka clear water) that are connected
to the city's sanitary sewer system. Sump pumps are often connected to the
sanitary sewer
system via a hose leading from the sump to a laundry tub or a floor drain. |
| |
|
|
| |
Infiltration |
| |
|
Infiltration results from groundwater seeping into cracked sewer lines, manholes or
deteriorating lateral connections, and requires sealing of the wastewater collection system. |
Why is I and I a problem ? |
| |
Clear water reduces capacity in the City's wastewater collection and treatment
system and during heaving rainfall, can cause sewer backups and overflows. |
Why are cities being asked to reduce inflow and infiltration ? |
| |
Because all estimates point to a cost in the millions of dollars to build
the infrastructure just to convey the excess flows to wastewater
treatment plants. Further,
costs to expand treatment plants are also prohibitive due to the lack of available building
space and the sheer unique type of construction required. |
So, Why should you care ? |
| |
Your sewer may overflow....
First, I and I may affect your home - clear water reduces capacity in the City's wastewater
collection and treatment system and, during heavy rainfall, may cause sewer backups and
overflows. |
What is the City doing about it ? |
| |
Most recently, the City completed a series of "smoke tests" west of Whittlesey
Avenue, which revealed several hundred locations of I and I, and letters were sent to those
homeowners. Thanks to these homeowner's cooperation and belief in the I and I program, many
downspouts were disconnected and sump pumps were re-routed to reduce the amount of clear water
being placed into the sanitary sewer system. The result of this is more capacity in the sanitary
sewers for future development and reduces the likelihood of basement backups and Combined
Sewer Overflow (CSO) events. |
| |
|
| |
Contact the Street Department for more questions on I and I. |
| |
|
| |
Thanks, Josh Snyder |
Contact
Josh Snyder
38 Whittlesey Ave.
Norwalk, Oh 44857
419-663-6735
Hours:
Monday - Friday 8:00 am - 4:30 pm
pw-eng@accnorwalk.com
Action Line is where residents can report concerns and problems.
