CASE STUDIES

BACKGROUND

H2OiQ's Realtime Smart Water Monitoring equipment was installed in a Gents Washroom within a university building. The trial consisted of monitoring 1 x WC1 with an existing third party WC fill valve fitted. We proceeded to collect water usage data and patterns including WC fill flow rates and daily total usage. This data was collected over several months to achieve an accurate account of the water usage in the trial location.

After the initial data had been collected, we then removed the third party fill valve and then replaced these with Fluidmaster's AirGap valve. We proceeded to monitor the water usage to prove the water savings and improved performance and efficiency.

THIRD PARTY FILL VALVE

Graph 1 shows a total daily water usage of 227.12 litres on 9th December 2019 with 1 x WC fitted with a third party fill valve

Graph 2 shows a total cistern fill rate for 1 x WC of 8.25 litres on 9th December 2019 after the first flush of the day at around 05:43 with a third party fill valve

FLUIDMASTER AIRGAP FILL VALVE DATA

Graph 3 shows a total daily water usage of 68.20 litres on 17th December 2019 with 1 x WC fitted with Fluidmaster's AirGap Fill Valve

Graph 4 shows a total cistern fill rate for 1 x WC of 6.13 litres on 17th December 2019 after the first flush of the day at around 06:44 with the Fluidmaster's AirGap Fill Valve

SUMMARY

When the Gents Washroom WCs had the third party fill valve fitted, the WC used around 8.25 litres per flush.

When the same WC was fitted with Fluidmaster's AirGap Fill Valves, the WC used around 6.13 litres per flush.

The case study shows a saving of at least 2.12 litres per flush with no negative impact on the flush.

This is a water saving of 26% per flush compared to the third party fill valve.

This equates to a saving of nearly £140 per annum with CO₂ reduction of 57.32 kgs per WC.

The equivalent Ladies Washroom WC saving is nearly £560 per annum with CO₂ reduction of 229.28 kgs per WC (due to higher usage).

BACKGROUND

H2OiQ’s Realtime Smart Water Monitoring equipment was installed in a Gents and a Ladies Washroom within a Hotel's Lobby Area consisting of 3 x WCs and 4 x WCs. We fitted a flow sensor on the cold water supply which supplies both sets of WCs to enable us to collect water usage data, flow rates and daily total usage. The data was collected over several months to achieve an accurate account of the water used. After the initial data had been collected, we then removed the competitor’s ball fill valves and replaced them with Fluidmaster AirGap Fill Valve. We proceeded to monitor the water usage to prove the water savings and improved performance / efficiency

THIRD PARTY BALL FILL VALVE

Graph 1 shows a total daily water usage of 1,720.41 litres on 3rd January 2020 with a total of 7 x WC fitted with third party ball fill valve

Graph 2 shows a total cistern fill rate for 1 x WC of 10.20 litres on 3rd January 2020 after the first flush of the day at around 05:38 with the third party ball fill valve

FLUIDMASTER AIRGAP FILL VALVE DATA

Graph 3 shows a total daily water usage of 1,522.45 litres on 28th February 2020 with at total of 7 x WC fitted with Fluidmaster’s AirGap Fill Valve

Graph 4 shows a total cistern fill rate for 1 x WC of 8.02 litres on 28th February 2020 after the first flush of the day at around 01:27 with the Fluidmaster’s AirGap Fill Valve

SUMMARY

When the Gents Washroom WC had the third party ball fill valve fitted, the WC used 10.20 litres per flush.

When the same WC was fitted with Fluidmaster’s AirGap Fill Valve, the WC used 8.02 litres per flush.

The case study shows a saving of 2.18 litres per flush with no negative impact on the flush.

This is a water saving of 21% per flush in comparison to the water used by the competitor’s ball fill valve.

Based on these figures, this equates to a saving of over £300 per annum with a CO₂ reduction of 137 kgs across the 7 x WCs.