Abstract
Greywater (GW) has attracted global attention as an alternative water source over the last few decades. GW treatment and
reliable reuse require the overall qualitative characterization of samples from different sources. This paper represents an
investigation of household-generated GW in the Northern Great Plain Region of Hungary. Modern and reliable analytical
techniques and instruments (ion chromatography, microwave plasma atomic emission spectrometry, Zetasizer Nano Z analysis,
etc.) were applied for the determination of the main pollutants and the preparation and specification of the potential treatment
methods for indoor or outdoor GW reuse. It was shown that the shower/bathtub fraction must be collected separately from other
sources based on its low organic matter (DOC<87.76 mg L-1 and BOD5<250.33 mg L-1, MBAS<2.92 mg L-1), solids (TS<804 mg
L-1), salt (EC<610 S cm-1), nutrients (NO3-N<1.15 mg L-1, NH4-N<4.80 mg L-1) and microelement (Fe<0.01 mg L-1, Zn<0.01
mg L-1, Cu<0.15 mg L-1, Ba<0.38 mg L-1) concentrations. In particular, laundry and kitchen sink or dishwasher GW were the
most loaded streams. The current study demonstrated that there are no significant limitations for implementing GW reuse
systems in Hungarian households but that treatment is necessary before reuse. Further research is needed to adapt treatment
methods for the specifics of Hungary.