6.2.1 Water consumption tracking

Srinakharinwirot University (SWU) measures the total volume of water used in the university that is taken from mains supply or extracted from surface water. Water consumption tracking covers the whole university, across both campuses: Prasarnmit Campus (Bangkok), which uses treated mains water from the Metropolitan Waterworks Authority (MWA), and Ongkharak Campus (Nakhon Nayok), which uses water extracted from canals and treated at the University's own water production plant. The volume of treated and extracted water used is measured in cubic metres (m³) and recorded every month. In 2025, total water consumption across the whole university was 909,429 m³. The measurement data and annual water statistics are published online, and the evidence is available at the sources below.

Water Sources Used by the University

Prasarnmit Campus uses mains supply from the MWA, and some lawns are irrigated with water pumped from Saen Saeb Canal. Ongkharak Campus produces its own tap water from surface water: raw water is extracted from the Rangsit Prayurasak and Sisa Krabue canals, pumped into a 360,000 m³ on-campus raw water reservoir and treated at the University's water production plant (see SDG 6.5.4).

How Water Consumption Is Measured Across the Whole University

At Prasarnmit Campus, water consumption is measured by MWA water meters and taken from the monthly MWA bills. At Ongkharak Campus, bulk meters record the raw water pumped into the water production plant and the water distributed, and meters at each building record the supply to individual buildings (a few sports facilities, such as the softball building and the central stadium, share a meter). These data are recorded by the Sustainable Development Division.

Consumption at both campuses is compiled every month in the University's SDG Sustainability Dashboard by the Physical Development Division and the Sustainable Development Division, Office of the President. The data are used to monitor consumption trends, detect leaks and plan water-saving measures.

Total Water Consumption by Campus, 2025

In 2025, total water consumption across the University was 909,429 m³. Ongkharak Campus accounted for 66.1% (601,525 m³) and Prasarnmit Campus for 33.9% (307,904 m³).

Monthly Water Consumption Tracking, 2025

The table below shows the monthly water consumption of each campus recorded in the SDG Sustainability Dashboard for January to December 2025.

The screenshot below shows the monthly water consumption records in the University's SDG Sustainability Dashboard. The summary cards show total consumption of 909,429 m³ in 2025, with 601,525 m³ (66.1%) at Ongkharak Campus and 307,904 m³ (33.9%) at Prasarnmit Campus. The charts show the monthly totals and the monthly comparison between the two campuses, including the December 2025 data.

Source: https://script.google.com/macros/s/AKfycby53PzkcT8eUJD9a933GyE_59Tyse0n8TG1QjRJUxyqwEYqK_xBcjTKrLDgHnuEIs7G/exec

Monitoring Water Consumption Trends, 2023–2025

Tracking water consumption allows the University to follow its progress over time. Consumption in January–November 2025 was 840,917 m³, 18.0% lower than the 1,025,315 m³ used in January–November 2024. Ongkharak Campus reduced its annual consumption by 21.7%, from 768,547 m³ in 2024 to 601,525 m³ in 2025. On the dashboard, annual consumption fell from about 1.11 million m³ in 2024 to 909,429 m³ in 2025, the lowest of the three years (2023–2025, B.E. 2566–2568). The charts show monthly total consumption (top left), annual consumption by year (top right) and monthly consumption at Ongkharak and Prasarnmit Campuses (bottom).

Source: https://script.google.com/macros/s/AKfycby53PzkcT8eUJD9a933GyE_59Tyse0n8TG1QjRJUxyqwEYqK_xBcjTKrLDgHnuEIs7G/exec

Public Water Statistics for Ongkharak Campus

The Sustainable Development Division also publishes annual and building-by-building water statistics for Ongkharak Campus on its website. In 2025, the Ongkharak water production plant distributed 650,866 m³, of which 601,525 m³ was recorded by building meters. The difference of 49,341 m³ (7.6%) represents losses and unmetered use in the distribution network (see SDG 6.5.4).

Source: https://sd.op.swu.ac.th/water_statistics