Tag: NRW

AMI = ROI

How Advanced Metering Infrastructure Helps Water Systems Recapture Lost Revenue

According to the National Geographic Society, only 3% of our planet’s water is freshwater, and only 1.2% of that is safe for drinking. As our planet continues to experience climate change at alarming rates, the higher the demand is for clean drinking water. Meanwhile, our drinking water supplies continue to shrink. It is now more imperative than ever for us to focus our attention on sustaining our already limited water supplies.

AMR and AMI: What’s the Difference?

Automated meter reading (AMR) is a system that automatically collects data pertaining to the consumption of water and then sends the collected information to a centralized database where it is analyzed and used for billing purposes. AMR systems typically refer to a mobile or drive-by meter reading system.  This technological system replaces the need for a physical visual inspection and access to the customer’s property.  AMR systems, when reviewed with proper analysis, can greatly help both utility providers and customers to have better control over the use and production of their utilities.

An AMR fixed network is often referred to as an Advanced Metering Infrastructure (AMI) and allows for real-time consumption readings, rather than relying on a technician to physically read meters.  AMI is a bit more technologically advanced than a mobile AMR system; the development of AMI has actually extended AMR technology by allowing a two-way communication system that has the ability to send and receive real-time water usage readings but can also receive and act on instructions and program changes sent from the meter reading software to the customers meter. These commands can be time-based pricing data, demand-response actions, remote service disconnects, and can even send alarms for leak detection, reverse flow, tamper, and other utility issues.

In today’s world, the data from an AMR system or AMI, whether mobile or fixed, is crucial. In the United States, seven billion gallons of clean, treated drinking water are lost every day. The lost water, or non-revenue water (NRW), is often a result of leaking pipes, water main breaks, theft, and improper accounting of water. Water audits are a phenomenal resource to help identify causes and costs that come with water loss, provide solutions for repairs and maintenance, and a higher return on investment.

In tandem with water audits, AMI offers providers the opportunity to learn more about their water usage (and therefore loss), and in turn be able to use that information to dispatch repair crews more quickly, reduce the number of outages and customer disputes, and leave room for further operational efficiencies. For customers, AMI provides them accurate and timely billing, more control over their consumptions and costs, and higher rates of customer satisfaction.

AMI Real Life Application

Tata & Howard, Inc. completed a water audit of a distribution system using data from 2013 to 2015. We used the American Water Works Association M36 water audit methods and found that the Town had nearly 400mg in NRW over the three years, equating to approximately $1,137,000 in lost revenue.

Let that number sink in.

As part of the water audit, we were able to help the Town find that an overwhelming amount of NRW loss was due to customer meter reading and billing errors. Our team was able to recommend administering a customer meter testing and replacement program, replacing their current customer billing system, implementing an AMI technology, and further documenting any unbilled or unmetered water use.

Tata & Howard has extensive experience working with municipalities and water companies to determine sources of water loss and with implementing AMI to mitigate losses. Contact us to learn how we can help your system save water — and money.

Identifying Non-Revenue Water — And Why It Matters

In the United States, there are approximately 170,000 public drinking water systems, with 54,000 of them collectively delivering water to more than 264 million people, more than half of the country’s population. Unfortunately, due to the state of our nation’s drinking water system, limited infrastructure funds, and climate change, we are losing approximately seven billion gallons of water a day.

So where exactly is that water going?

Non-Revenue Water Crisis

Non-revenue water (NRW) is water that has been, essentially, dined and dashed, or water that has been consumed but not paid for by way of inaccurate meter reads or theft. Additionally, leaks in the system can be a major contributor to NRW.

With NRW comes two main types of loss: apparent and real loss. Apparent losses occur when water is delivered to the consumer but is either measured or metered incorrectly. Real losses occur when water is physically lost and never makes it to the consumer. While a very small amount of NRW comes from firefighting, hydrant flushing, municipal construction, and street sweeping, this is considered to be an “unbilled metered” source of NRW and is not considered a part of the “real loss” crisis. (You can find more information on different forms of NRW here.)

So, how does this affect the general public? Well, if you use less water, your monthly bill will go down, as with any typical utility. However, if water is being lost within the plumbing in your house, and there is a higher demand, your monthly bill will be raised. In fact, the average household in the US loses approximately 10,000 gallons of water a year, meaning NRW affects, quite literally, everyone.

Hundred-Year-Old Pipes

In the United States, there are an average of 240,000 water main breaks every year, with approximately 650 to 700 happening per day. Unfortunately, this information isn’t entirely shocking given that a large amount of our nation’s pipes and mains are over a hundred years old and in need of critical replacement in order to prevent further breaks. As it turns out, 75% of drinking water investment needs are for repairing and replacing leaky pipes.

Drinking water system component parts have an average life expectancy of fifteen to ninety-five years, so while new pipes are being added to expand our current systems, other parts are continuing to degrade. Degrading leads to water main and pipe leaks, which not only disrupt service to customers, but can also cause the subsurface of our roads and public infrastructures to erode which, when untreated, can eventually lead to road collapses and deteriorating building foundations. Just as concerning, broken or leaking pipes invite the potential for toxins and disease-causing pathogens to enter the water supply, causing water quality issues that require mitigation — yet another expense.

Why Water Audits?

To fix all of our water distribution systems, it would cost the United States approximately $200 billion, and almost half of that money would be allocated for water loss control. With water audits, the most critical areas can be identified first so the (already limited) funds can be dedicated solely to repairing the infrastructure. From there, water audits can help municipalities develop strategies and courses of action for future problem areas; recapture lost water; decrease the need for new sources, treatment plants, facility upgrades and expansions; and reduce the number of entry points to disease-causing pathogens.

Water audits follow the M36 Water Audit methodology from American Water Works Association (AWWA) and are an affordable and efficient solution to increasing water availability and helping to identify the costs and causes of water loss. In the past, Tata & Howard has been retained by the Towns of Wayland and Grafton, MA, and South Central Connecticut Regional Water Authority (SCCRWA) to complete water audits to determine the volume at which NRW is occurring, potential sources of the lost water, and make recommendations on how to reduce future water loss.

For more information on water loss control and the M36 methodology, take a look at our webinar here.