LAWN SPRINKLERS

Irrigation / 2nd meter

sprinkler

This information is for PUBLIC WATER
Lawn irrigation sprinklers

An underground sprinkler system connected to the public water supply system requires a plumbing permit and backflow preventer.

The purpose of the permit is to ensure the safety of the public water supply.
Sprinkler systems can pose a hazard to the public water supply due to possible contact with stagnant water, pesticides, or other undesirable materials.


Backflow assemblies must be tested

        • initially upon installation,
        • immediately after repair or relocation,
        • and at regular intervals thereafter.

Requirements BEFORE installation of lawn sprinklers:

An active licensed Plumber with ASSE certification must install and test the backflow assembly on the sprinkler system. 

Sprinkler systems require a  Plumbing permit from the Building Department.  

  • If you are choosing to install an Irrigation Deduct, also called a 2nd meter or second meter, this required permit is part of the process listed below under Residential irrigation deduct meter

Requirements AFTER installation of lawn sprinklers:
 

  • Backflow preventers on lawn sprinklers must be tested by an active licensed Plumber with ASSE certification immediately after any repair or replacement.
  • Backflow preventers on lawn sprinklers must be tested by an active licensed Plumber with ASSE certification every three (3) years, or more frequently if required.


Residential irrigation deduct meter
(For common area sprinkler systems, see Seasonal Sprinkler Meters)


Customers with Irrigation Deduct/ 2nd meters installed do not pay sewer usage for amounts metered by the irrigation deduct meter, but they continue to pay for all water used. An Irrigation / 2nd meter will not be of any benefit to those customers who are not paying for public sewer. 

Monthly water service charges are based on the number of meters at your property, therefore your monthly service charges will increase with the addition of an irrigation/2nd water meter. 
You should consider this and your outdoor watering habits when deciding if an irrigation/ 2nd meter will save you money. Click here for more information on Current Water & Sewer Rates.

Requirements BEFORE installation of an irrigation deduct meter:

Two (2) permits are required:
     1) Irrigation / 2nd meter permits through Department of Public Works, and
     2) Plumbing permit through Building Department.
Payment is due when permits are issued and may be paid by check or cash.

To download the Irrigation / 2nd meter  information packet, go to DPW FORMS> PERMITS & PROJECTS> Irrigation / 2nd meter

Irrigation / 2nd meter permits are issued at the Department of Public Works to the homeowner or their contractor.  You will need to know the size of the meter you require (3/4” or 1”).   Your irrigation installer will be able to tell you what size will work best for you.   

A Plumbing permit, also required, is issued by the Building Department at the counter to the homeowner or a licensed plumber.

Provide the Department of Public Works the completed Backflow Test form prior to scheduling the installation of the irrigation / 2nd meter. 
      Per State requirements as of July 31, 2024, all persons testing backflow assemblies are required to have both of the following:
                • Active ASSE 5110 Testers Certification
                • and an Active Plumbing License (Apprentice/Journeyman/Master)

After your contractor has completed the work, tested the vacuum breaker and submitted the required Backflow Test form, you must contact the Building Department for a final plumbing inspection. This is an INTERIOR inspection. 

Once the final plumbing inspection has been approved, call the automated DPW Inspection Request Line at (586) 786-0010 ext 1516 to schedule an appointment for the installation of the irrigation / 2nd meter.

Inspections are required on all permits issued.   Request for inspections may be made by email, in person, or by phone and generally will be completed the following business day.


Requirements AFTER installation of an irrigation deduct meter: 

Lawn sprinklers connected to a irrigation deduct meter have the same testing requirements as all lawn irrigation sprinklers.

  • Backflow preventers on lawn sprinklers must be tested by an active licensed Plumber with ASSE tester certification immediately after any repair or replacement.
  • Backflow preventers on lawn sprinklers must be tested by an active licensed Plumber with ASSE tester certification every three (3) years, or more frequently if required.





For additional assistance, contact  Heather Berger in the Department of Public works:
                                                                         (586) 786-0010 press 1211 or by email.