The values of quality indicators on the Danube are within the normal parameters at its point of entry in Romania, national water authorities announced Thursday. According to the Romanian Waters National Administration, the latest lab analysis revealing a pH value of 7.86 and experts measured the Danube water quality every four hours at Bazias, where the Danube enters Romania in the country's south-west. In the next 24 hours, water samples will be collected once every eight hours and afterwards on a daily basis, according to the same release. Millions of gallons of red mud, a bauxite residue, from an alumina facility broke through a container barrier early last week in western Hungary, dousing on the tiny hamlet of Kolontar and the neighbouring village Devecser with millions of gallons of caustic liquid, killing at least four. The red mud contains heavy metals that are highly toxic. Hundreds of tons of plaster are being used to bind the toxic mud, and military helicopters have been pouring neutralizing materials into the waterway from the air. The accident has caused concern in the Danube riparian states, alarmed by a possible vast contamination. The pollution wave reached Tuesday the Romanian section of the Danube, but without affecting the water quality, according to Romania's water authorities. 