Getting your UARL volume targets right
Let us predict how low you can go for a range of average pressures.
Did you know you can customise your annual UARL volume?
- Calculate SCF volumes for one DMA or Zone, or for your whole system
- SCF customises volumes for small systems, zones or DMAs outside the 45–60m AZP range
- Analyse a complete top down/bottom up customised set of UARL volume targets for every DMA, Pressure Zone and Supply Zone
- Methodology allows for pressure:bursts, influence of system size and influence of pipe materials
- Find out more about the basics of UARL here – UARL and ILI
SCF models three additional influences on real losses volumes
- FAVAD (Fixed and Variable Area Discharges) – how the combinations of rigid and flexible pipe materials affect the Pressure:Leak Flow rate
- System Size, using a Poisson Distribution to model median numbers of annual UARL bursts
- Pressure:Bursts relationships
Gain valuable insights into where to target Active Leakage Control
- SCF reports show Zones or DMAs where a standard 1999 UARL calculation for a Zone or DMA significantly overpredicts UARL volume
- Use these SCF reports to improve your Active Leakage Control priorities
- Uses inputs to a standard UARL calculation plus estimate of pipe materials used
- Already used by more than 20 large and small water utilities in 12 countries
Quantify the volume benefits of pressure management
- SCF reports identify Zones or DMAs where a standard 1999 UARL calculation is unlikely to be achievable at the current Average Zone Pressure, and zones and DMAs which can significantly benefit from pressure management to reduce leak flow rates and burst frequencies
- SCF calculations quantify the benefits of smaller pressure management activities in a Zone or DMA by estimating the reduction in UARL volume that could be achieved by reducing pressure by specific amounts
International recognition for UARL with SCF
- UARL with SCF is recognised in ISO Standard 24528 on Water Loss — ISO 24528:2021
- UARL with SCF is recognised and referenced in the AWWA Free Water Audit Software v.6
“Allan Lambert and Kate Stanton-Davies provided great technical support and unbelievably quick answers throughout our long-lasting collaboration. As a regulatory agency working closely with more than 800 water distribution systems, the Quebec Water Efficiency team saw a great opportunity to work with them to provide useful data and analysis on water losses for each system.”
“UARL with SCF software allows us to further customise UARL calculations for each of 320 individual Zones and Sub-Zones, for the first time. Fine-tuning the UARL is allowing us further scope to reduce leakage, saving millions of euros in the process.”
“With over 55,000 water systems in North America, and over 90% designated as small systems, this research will quite literally have an impact on tens of thousands of water systems, refining their understanding for predictive leakage modelling.”
Online calculation pricing
Metric Units
| Calculations | £ per calc | € per calc |
|---|---|---|
| 1–100 | 120 | 140 |
| 101–200 | 110 | 130 |
| 201–300 | 100 | 120 |
| 300+ — Contact us | ||
US Units
| Calculations | $ per calc |
|---|---|
| 1–100 | 165 |
| 101–200 | 150 |
| 201–300 | 135 |
| 300+ — Contact us | |
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