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PFAS Investigation &
Management Program

RAAF Base Williamtown

Moors Drain Water Treatment Plant

Defence has installed a water treatment plant (WTP) at Moors Drain in RAAF Base Williamtown. The WTP will treat water before it leaves the Base through Moors Drain. The WTP was delivered to via Australian military aircraft from the United States in late May 2017 and after completing a commissioning phase is now operational. The WTP is the first of its kind in Australia and uses leading edge technology to filter PFAS from water. The Moors drain WTP complements the existing Lake Cochran WTP which is treating water leaving Lake Cochran through Dawson’s Drain.

The water treatment plant works by selectively removing PFAS compounds using specially designed media called Ion Exchange Resin.

About the Water Treatment Plant

Key Terms

Resin - is a synthetic substance used by the water treatment plant to filter PFAS from water.

The WTP is developed by a United States based company called Emerging Compounds Treatment Technologies (ECT2) that specialises in mitigating the impacts of emerging contaminants. They have been contracted by Defence to install and pilot plants at several Defence bases.

The WTPs use the latest technology, Sorbix A3F resin, a regenerable and strong adsorbent synthetic resin with ion exchange functionality, to treat water. The treated water is closely monitored to ensure that it meets the relevant water screening criteria set by Department of Health.

The system is fabricated into a 40 foot container reducing the space required on the Base for the system to be situated and produces smaller waste streams compared to other water treatment plants for PFAS.

Moors Drain Water Sampling Results

The Water Sampling Summaries track the PFAS concentrations against the limits defined by the relevant adopted drinking water screening criteria. They include results for perfluorooctanoic acid (PFOA), 6:2 fluorotelomer sulfonic acid (6:2 FTS) and the sum of perfluorooctane sulfonic acid (PFOS) and perfluorohexane sulfonic acid (PFHxS).

The water quality data is drawn from water samples on both untreated and treated water. The summaries of water sampling results can be downloaded below.