In 1946 the Metropolitan Water, Sewerage and Drainage Board (MWS&DB) (now
Sydney Water) started to build the City Water Tunnel – a water supply tunnel from Potts Hill to
Waterloo in Sydney to supplement the existing Pressure Tunnel (started 1946, finished 1961). From 1948 to 1955 workers camps were set up at Potts Hill to accommodate the European migrant workers (Poles, Czechs, Lithuanians, and Ukrainians) who were indentured from the many
displaced persons brought
to Australia after World War II. Due to the proximity of Regents Park, the camp was also known as the Regents Park migrant camp. Conditions at the Potts Hill camp were primitive. Known as "tent city", many workers had to live in tents, some of the huts were in bad repair and there was a lack of hot water, showers and electric coppers. In early 1951 there were nearly 1,000 men living in the camp. The local businessman who sold food to the workers neglected to install refrigeration and had a poor record for hygiene. Workers' wives were only allowed in the camp between 11 am and 5 pm on Sundays. Wives, particularly in hospitals, were often on night work, and did not have week-ends off. Sometimes married couples could not see each other for several months. The workers also experienced hostility from the union members of the Water Board. == Potts Hill radio astronomy field station ==