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Submetering & Utility Billing Since 1983

A History of Submetering Sucess

Founded in 1983, Guardian Water & Power provides a full suite of utility cost recovery services including submeter system design, submeter installation and maintenance services, submeter reading, utility billing, collections and utility expense management - all backed by commitment to providing superior customer service.   Our primary markets are multi-unit residential and commercial properties including apartments, condominiums, shopping centers, offices, military bases, marinas and manufactured housing communities.   We create value for our customers by minimizing property utility usage, maximizing recovery of utility costs, lowering operating expenses and increasing property valuations. By creating value for our customers, we help conserve water and energy resources. 

Our first priority is to efficiently recover utility costs through the application of submetering measurement technologies. Guardian technologies are supported by an in-house staff of programmers and web application engineers. Headquartered in Columbus, Guardian maintains regional sales and service centers in Austin, Cranford, Honolulu, Jacksonville, Orange County, Raleigh and Tacoma. We work directly with our customers to increase net operating income, improve property valuation and promote water and energy conservation. 

Founded in 1983, our original name was WaterMaster America, Inc. and our primary business focus was water submetering. Since our founding, we've pioneered several water submetering concepts and techniques including customer equivalency billing practices, consumption analysis procedures, radio-frequency submeter kits for client-installed systems and innovative financing options. 





In the early years of our business, we consulted with various regulatory agencies and participated in efforts to help solidify the legal foundation of utility submetering in the United States. Advances in submetering technology coupled with rising energy costs gradually broadened the scope of our work to include gas and electric submetering. In 2001, we established our PowerMaster® subsidiary to provide gas and electric submetering services. Today, we offer all of our submetering and utility management services under one name: Guardian Water & Power, Inc. 

Over the years, we have continuously invested in GuardianSoft+®, our utility billing platform. The ongoing development of GuardianSoft+® and its related modules is supported by our in-house team of software engineers and web application programmers. While other companies outsource their IT function and purchase off-the-shelf billing software, we believe our in-house development team makes us more responsive to client needs and better able to control utility management costs. 

We believe it is fundamentally important to clearly understand the difference between what we can and cannot control, so we focus our time, talent and capital on those things we can control. In keeping with this core belief, we staff our own IT department team, bill processing facility and meter installation and service departments.   We cultivate a work environment that rewards tenacity, inquisitiveness and personal integrity. We offer our employees increasingly attractive compensation and performance-based incentives. We make every effort to promote employees to higher levels of responsibility from within the company. 

As one of the oldest and most established submetering and utility billing companies in the country, our longevity speaks to our commitment to the future. This commitment is reflected in our ongoing investments in our employees, our IT infrastructure and our client and vendor relationships. 

Founder and CEO Harry Apostolos (pictured far left) along with original office staff in 1983

Our Team

Leadership Team


Harry Apostolos

Chairman & CEO

In the early 1980s, Harry noticed a textbook case of market inefficiency while managing apartments on the north side of ... [Read More]

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Grant Neilley, CPA

Board Member

Grant served as President, Controller, Director of Operations, Treasurer and Board Member in a number of ... [Read More]


Tricia Ricchino

Chief People Officer 

Tricia is responsible for all Human Resources and Marketing functions at Guardian. She has over 17 years of experience... [Read More]


Stephanie Palma

Billing Manager

Stephanie oversees our data acquisition department  responsible for syncing meter read data at the ... [Read More]


Rhonda Neville

Client Services Manager

Rhonda started with Guardian in 2002 and in her role as Client Services Manager she oversees both the billing member and customer service.. [Read More]


George Gagnon

Finance Manager

George started with Guardian Water & Power in 2002 as an Accounting Coordinator, now in his role as FInance Manager... [Read More]

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Howard Task

Board Member

Howard provides business consultation services to family owned businesses. His 40 years of combined ... [Read More]


Jaclyn LaFace

Rates Manager

Jaclyn started with Guardian in 2002. Since then she has been involved in a wide variety of positions including ... [Read More]


Lacey Bassett

Client Services Manager

As a Client Services Manager coordinates Guardian's pacific time zone billing representatives and customer service department metrics. ... [Read More]

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