English Abstract On request of the Inspectorate of the Environment the
indoor air concentrations of hydrogen sulphide (H2S) have been examined in
four dwellings in the community Best (Noord-Brabant, the Netherlands) in
June/july 1991. Motives were ongoing complaints of occupants. They suspect
the sewerage to be the cause. Monitoring of concentrations H2S in the four
dwellings showed regularly increased levels in one house and incidentally
increased levels in two other houses. Concluded is that especially in the
first dwelling the air quality can cause serious odour nuisance. To assign
the sewerage as the cause a further investigation of its employment is
necessary.