McGowan Govt To Remove TMV Assembly Boxes At Perth Children’s Hospital

McGowan Govt To Remove TMV Assembly Boxes At Perth Children’s Hospital

Western Australia Minister for Health Roger Cook

Chief Health Officer Reports On Water At Perth Children’s Hospital

Victor P Taffa

  • Chief Health Officer identifies cause of lead in water supply at Perth Children’s Hospital
  • State Government to commence a plan to replace Thermostatic Mixing Valve Assembly Boxes

State Government today accepted the findings in the report from Western Australia’s Chief Health Officer (CHO) on Perth’s Children’s Hospital Potable Water.

“Since coming to office, we have acted decisively to resolve the issues relating to lead in the water at the hospital.” Minister for Health Roger Cook said.

“We are moving forward to resolve the issue. The Department of Health, the Department of Finance and the Building Commission will develop a plan to remove the TMV Assembly Boxes.”


Report was the culmination of a month-long review by the CHO, to review water treatment strategies at the hospital, and to provide suitable recommendations to remediate the ongoing lead issue.

Review consisted of analysis of prior reports, new data analysis, interviews with key stakeholders, and a series of specially designated and targeted experiments.

CHO has concluded that the source of the lead in the water is the dezincification of brass fittings.

Many of these brass fittings are located within Thermostatic Mixing Valve (TMV) Assembly Boxes, located near drinking water outlets in the hospital.

“I remain committed to restoring the faith of the public in Perth Children’s Hospital, so children and families can rely on the hospital for years to come.” Mr. Cook said.

CHO’s key recommendation is to remove and replace the TMV Assembly Boxes.

Continuation of current flushing and phosphate treatment programs is also recommended.

CHO found phosphate treatment has had some effectiveness to date, improving compliance with Australian Drinking Water Guidelines from 74 % to 82 %.

State Government has commenced developing a plan for removal of the TMV Assembly Boxes.