1. What is meant by the term "Top-Down Water Audit"?Contact Us For More Information!
The term "Top-Down", as related to the new AWWA/IWA water audit procedure, simply means ESTIMATED. A good example is the "pressure" entry in the UARL formula. Usually, the initial entry is an educated guess. To improve the accuracy of the UARL calculations, utilities should take many pressure readings, and use the average as their entry, which will improve the accuracy of the UARL calculation .
2. Why has the AWWA shifted to this new procedure?
Although there are various reasons for adopting the IWA methodology, the primary was the concern for the miss-use of the term UFW, and the various accounting methods utilities used to perform a water audit. Also, utilities have traditionally been unable to accept the importance that curtailing water losses had to their operation, and assumed that there was some magic point at which water loss was acceptable. (I.E. 15% loss.) The new IWA methodology places every utility on the same playing field, and eliminates the term UFW. In addition, it utilizes the approach of placing a "budget value" on the amount of leakage - which actually is an eye-opener - and encourages adopting an active water loss recovery program. For more, visit www.awwa.org/. Bottom Line? Utilities have traditionally ignored the fact that their utility LEAKS WATER, and now the EPA is very close to strict compliance measures. And you have had years to correct it, but not much has been accomplished.
3. What are all of these new terms, such as UARL, ILI, TIRL, CARL
Download a description HERE. (A PDF file). (Coming Soon!)
4. Why should I consider a web-based records management system?
First of all, it's an easier process, and everyone who's authorized can Logon and enter usage information. Secondly, it has always been difficult to get accurate records from other departments using water: Fire, public works, etc. Letting them enter the information in an easy to use environment will encourage accurate data entry, and management. Thirdly, it's cheaper than using your employees to enter the data and produce an audit. Fourthly, it means that your water audit (water balance) is a free, and accurate, by-product of your data entry.
5. I've computed my ILI, now what?
The Infrastructure Leakage Index was devised as a ratio of your Unavoidable to your actual leakage amounts (real losses). Consequently, the AWWA has the following recommendations for the actions you should take: