Frequently Asked Questions
What is a permit?
A permit is a document issued by the City of Mesa
Industrial Pretreatment Section (IPS) to regulate the types and
concentrations of pollutants a facility may discharge into the
City of Mesa wastewater collection system. A permit is only
required for facilities that have a "process" wastewater
discharge or a categorical process as defined by
40 CFR 403
What does the City of Mesa consider a "process"
wastewater to be?
The IPS considers "process" wastewater to be any water
that, during a manufacturing or processing operation, comes into
direct contact with, or results from the production or use of,
any raw material, intermediate product, finished product,
by-product, or waste product.
What happens if I am operating without a permit?
All new facilities are required to complete surveys
that IPS distribute to new businesses. Mesa's IPS performs site
visits at facilities throughout Mesa, as required by Federal
Law. If a facility is operating without a permit, it may be
subject to civil and criminal actions. A facility may face
enforcement actions if a preliminary survey is not submitted to
the City of Mesa
Once a survey is received, the City will determine if a permit
is required, based on a specific criteria.
How much does a permit cost?
Permits are free of charge. However, after a permit is
issued, a facility may be assessed a monetary charge on a
quarterly basis to compensate for monitoring costs. The amount
is determined by the strength or volume of wastewater discharged
What happens once a permit is issued?
Each permit is different, based on the type of
operations performed at the particular facility. Once a permit
is issued, the City of Mesa Industrial Pretreatment Section will
perform a minimum of one compliance inspection per calendar
year. Facilities that have a discharge will be required to
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Do I need a Permit?
Industrial Pretreatment Information