This is a tricky question with no single definitive "yes" or "no" answer. Here's a breakdown of the considerations

Understanding the Concerns & Requirements
Continuity of Grounding/Bonding

The primary goal is to maintain a continuous, low-impedance path for fault current back to the electrical supply source (transformer or service panel). This allows overcurrent protection devices (circuit breakers or fuses) to trip quickly and clear a fault, minimizing the risk of electric shock or fire.

Metallic Water Pipe as a Grounding Electrode

In many jurisdictions, metallic underground water pipe is permitted to be used as a grounding electrode if it meets certain requirements. However, it's not always required.

Water Meter Installation

Water meters are often dielectric or have dielectric fittings. This means they interrupt the metallic continuity of the water pipe.

NEC (National Electrical Code)

The NEC (in the US) addresses these issues.

General Guidelines and Considerations1. Local Codes and Regulations are Paramount

Always check with your local electrical and plumbing codes. These local codes may have specific requirements that supersede national codes or general practices. Contact your local building inspector or electrical inspector. They can provide definitive answers for your area.2.

NEC 250.52(A)(1) Exception

The NEC allows the use of a metallic water pipe as a grounding electrode if it is in direct contact with the earth for at least 10 feet. If that condition is met, then the bonding jumper will be needed.3.

The Water Meter's Role

If the metallic water pipe is used as a grounding electrode, and the water meter interrupts the continuity, then a bonding jumper is typically required around the water meter. This restores the continuity of the grounding path. The bonding jumper must be sized according to the NEC (typically based on the size of the service entrance conductors).4.

If the Water Pipe is Not Used as a Grounding Electrode

If the water pipe is not used as a grounding electrode (because it doesn't meet the 10-foot contact requirement, or because it's simply not chosen as a grounding electrode), then a bonding jumper around the water meter may not be required. However, there may be other reasons to bond the water pipe system (see below).5.

Supplemental Grounding

Even if the metallic water pipe is used as a grounding electrode, the NEC requires a supplemental grounding electrode (such as a ground rod or ground ring).6.

Bonding Interior Metallic Water Piping

Regardless of whether the water pipe is used as a grounding electrode, it's often good practice to bond the interior metallic water piping system to the electrical grounding system. This helps equalize the potential between the electrical system and the water pipe, reducing the risk of electric shock. This bonding connection is usually made at the service entrance or the main electrical panel.

In summary


Determine if the metallic water pipe is intended to be used (or is being used) as a grounding electrode per your local codes.2. If it is a grounding electrode and the water meter interrupts continuity, a bonding jumper is likely required by the NEC and local codes.3. Consult local electrical and plumbing codes and inspectors for definitive answers.4. If the water pipe is not used as a grounding electrode, a bonding jumper may not be required at the meter, but bonding the interior water piping system might still be beneficial.Caveats: This information is for general guidance only and should not be taken as professional electrical advice. Electrical work can be dangerous. Always consult with a qualified electrician for any electrical work. The NEC is a complex document, and interpretations can vary. Flag for review