Bydgoszcz: inventory of monitoring weels, test of water samples and drilling of 15 piezometers completed

An overview of the state of play of the pilot action and the pilot investment carried out by the City of Bydgoszcz

In the past few weeks, the City of Bydgoszcz completed the monitoring of the groundwater in the area of the former Chemical Plant Zachem.

In October, the inventory of existing piezometers (observation holes) in the Łęgnowo-Wieś housing estate was carried on. The condition of monitoring holes for groundwater testing in the former chemical company was checked, and 63 holes have been described: some of the piezometers appearing on the maps were removed, others are in poor technical condition. 10 samples were also taken from the Zachem monitoring wells for laboratory tests.

At the same time, an inventory of individual wells was carried out: 51 individual wells were inventoried and 8 samples from individual wells were collected.

Moreover, 18 water samples were chemically tested. In most cases, water samples showed organoleptic traces of pollution: in fact, almost all of them showed iron and manganese concentrations exceeding the maximum allowable levels.

Furthermore, 15 piezometers (observation wholes) were drilled at a depth of 10 and 15 meters. Boreholes are located linearly parallel to the railway line and enable checking if the groundwater is contaminated. After drilling all wells, soil and water samples were analyzed.