Skip to main content
24/7 Emergency(602) 675-1555
Gilbert City Program

Does every Gilbert business have to file a wastewater discharge questionnaire?

Verified October 4, 2026
In Short

Yes. Under Gilbert Town Code 66-177, every nonresidential user connected to the town sewer, including home occupations and users exempt from a business license, completes a wastewater discharge questionnaire. It is filed with the business license application and repeated yearly with the renewal. License-exempt users file when they connect and every July 1.

Official Source
Gilbert Town Code 66-177: Wastewater discharge questionnaire (Municode)
Gilbert Town Code 66-177
“All nonresidential users, home occupations and nonresidential users exempt from obtaining a business license who are connected to the town's sewer system shall complete a wastewater discharge questionnaire and file such questionnaire with the development services manager.”
Applies to:
Owners and managers of any nonresidential or home-based business connected to Gilbert's sewer, and landlords helping a new tenant open
Official fee:
none stated in 66-177
In force:
Gilbert Town Code Ch. 66, Art. VI, Div. 1 (Ord. 1612, 12-14-04, as amended through Ord. 2332, 6-23-11)
Last verified:
October 4, 2026, against the official page

Most people think of wastewater paperwork as something factories deal with. Gilbert's code casts a wider net. Section 66-177 sweeps in every nonresidential business on the town sewer, a home-based consultant included, and it asks for the form again every year.

What does Gilbert Town Code 66-177 say?

The quote above is subsection (a). Three parts follow from the section.

What you file. The questionnaire asks for the business name, location, mailing address, the owner or person authorized to act for the user, a telephone number, the exact nature of activities with either the standard industrial classification code or the North American Industrial Classification System code, the type of industrial or hazardous waste discharged, if any, and the signature and title of the applicant certifying the statements are true and correct.

When you file. The questionnaire goes in "with the application for a business license pursuant to chapter 14." Subsection (b) makes it yearly: with the license application or renewal, or, for a nonresidential user exempt from a business license, on July 1 each year. A license-exempt user also files immediately upon connection to the sewer system.

What the town can add. Subsection (c) lets the development services manager collect additional information reasonably necessary to implement the section and to perform continued waste monitoring.

What do the key terms mean?

  • Nonresidential user, home occupation: 66-171 does not define either term. Our reading is that "nonresidential user" is any business or institution that is not a household, and the section names home occupations separately so they are not left out.
  • Standard industrial classification code: a coded classification of industries by economic activity. The code accepts either that code or the NAICS code.
  • Industrial or hazardous waste discharged, if any: the form asks. The list in 66-177 does not say what follow-up an answer leads to.
  • Development services manager: not defined in 66-171.

Who does this cover?

Every nonresidential user, every home occupation and every nonresidential user exempt from a business license, as long as it is connected to the town's sewer system. That covers a tenant who opens next month and a long-time owner.

This does not apply to a property that is not connected to the town's sewer, such as one on a septic system, because the section reaches only users connected to the sewer system. The Town's licensing page says every commercial and home-based business located in Gilbert is required to have a business license, so our reading is that most users meet the questionnaire through the license application.

Quick check: when is it due?

SituationQuestionnaire?WhenWhere it comes from
New restaurant, shop or office on the town sewerYesWith the new business license application66-177(a)
Business renewing its licenseYesWith each renewal66-177(b)
Home-based businessYesWith the license application, then yearly66-177(a), (b)
Nonresidential user exempt from a licenseYesImmediately on connecting, then every July 166-177(a), (b)
Business on septic, not on the town sewerNot under this sectionNot applicable66-177(a)
Industrial plant with process wastewaterYes, and a separate permit may applyQuestionnaire yearly, permit 90 days ahead66-177, 66-232

What does this look like in real life?

A new tenant opens a salon. The owner applies for the business license through the One Stop Shop portal. Because the salon is connected to the town sewer, the questionnaire goes in with that application, and the owner signs that the answers are true.

A home-based consultant. The Town's licensing page says every commercial and home-based business located in Gilbert is required to have a business license, and 66-177 names home occupations. The consultant files the questionnaire with the license and renews it each year.

The edge case: a nonresidential user with no license to renew. The yearly trigger is not a renewal for this user. The code sets the date: July 1 each year, filed with the development services manager, plus a first filing on the day the connection is made.

What should you do next?

  1. 1Check whether you are connected to the town sewer. If you are, the section applies.
  2. 2For a new business, apply for the business license at OneStopShop.gilbertaz.gov and choose the Apply option. Business Licensing is at Development Services, 90 E. Civic Center Dr., phone 480-503-6700, onestopshop@gilbertaz.gov.
  3. 3Gather the answers before you start: the nature of your activities, your SIC or NAICS code, and whether any industrial or hazardous waste leaves the building.
  4. 4Ask Development Services at 480-503-6700 how the questionnaire is submitted with your license application. The Town pages we read do not show the form.
  5. 5At each renewal, pay the renewal invoice and file the new questionnaire with it. If you are license-exempt, put July 1 on your calendar.
  6. 6If your answers change because you add a process that produces industrial wastewater, read the Class A and Class B permit rules before you start the process.

What do people get wrong?

  • Only factories file this. The section's first words are all nonresidential users, and it names home occupations.
  • Filing once is enough. Subsection (b) says yearly.
  • No license means no questionnaire. The license-exempt user files immediately on connecting and every July 1.
  • The questionnaire is a permit. It collects information. A permit, where one applies, is a separate step under sections like 66-232.

Gilbert's own text governs; this page explains it.

How Do Other Valley Cities Handle It?

WhereWhat appliesSource
ScottsdaleWhen the division requests it, a user must submit information about the nature and characteristics of its wastewater within 30 days. The division director may prepare a survey form for this and may periodically require users to update the information.Scottsdale City Code 49-165(a)
Verified October 4, 2026
Queen CreekIndustrial users complete an Industrial Waste Survey as part of the building permit process.Queen Creek Building Safety page, citing Town Code 16-4-15 and 16-4-17
Verified October 4, 2026

This page explains the rule. The official text at the source above governs.

Sources

Commercial Plumbing in Other Cities

More Gilbert Codes and Permits

Related Rules and Questions

Questions About Gilbert Plumbing Code?

We work to code every day across the Valley. Call the dispatcher and we'll tell you what your project needs.