Konya'da kanalizasyon suyu ile sulanan toprakların kimyasal özelliklerinde meydana gelen değişmeleri ve topraklarda ağır metal birikimini belirlemek amacıyla yapılan çalışmada, bu sularla Mç sulanmayan, ilk kez sulanan (l yıl) ve uzun yıllardır sulanan topraklardan (10 - 15 yıldır ve 15 yıldan fazla) 0-10 cm, 10-20 cm ve 20-40 cm derinliklerden örnekler alınmıştır. Bu örneklerde yapılan bazı kimyasal analizlere göre şu sonuçlar elde edilmiştir. Hiç sulanmayan ve ilk kez (l yıl) sulanan topraklarda tuzluluk sorunu olmasına karşın uzun yıllardır kanalizasyon suyu ile sulanan topraklarda bu sorun ortadan kalkmıştır. Hatta 15 yıldan daha uzun süre bu su ile sulanan topıaklarm kireç içeriği diğerlerine göre %7.6 ile %59.4 arasında değişen oranlarda azalmıştır. Hiç sulanmayan topraklara göre kanalizasyon suyu ile sulanan topraklarda çok önemli düzeylerde organik madde, fosfor, DTPA ile ekstrakte edilebilir Fe, Zn, Mn ve Cu birikimi olduğu tespit edilmiştir. Kanalizasyon suyu ile sulanan topraklardaki Fe, Za; Mn ve Cu birikimi; bu topraklarda yetiştirilecek bitkiîere ve bu bitkileri tüketen hayvan ve insanlara oîumsoz etkiler yapabilecek düzeydedir:

This work was carried out the state of heavy metal accumulation.and also the changes in chemical properties of the soils of the agricultural lands irrigated with the municipal wastewater ( sewage water ) in Konya plain. The soil samples were collected from the deputes of 0-10 cm, 10-20 cm, and 20-40 cm of uninigated, short term (one year)and long term (10-15 years and more) irrigated agricultural lands. The results of chemical analysis of the soil samples can be summarized as fallows; 1-ft was found that the soil salinity problem has been already over come by the long termed (10-15 years or more ) irrigation of the agricultural lands with the municipal wastewater, although it has bsen still going on to be a serious and existing salinity problep for the agricultural soils of unirrigated or / and irrigated with the municipal wastewater foi the short term (one year). 2-It was confirmed also that the CaCO3 contents of the soils have been reduced by 7.6 % - 59.4 % with the long termed irrigation in comparison with those of the soils unirrigated or / and irrigated with the wastewater for the short term. 3-It was stated that various materials and elements such as organic matter, phosphorus, DTPA-extractable Fe, Zn, Mn and Cu have accumulated at the significant levels in the soils irrigated with the municipal waste water compared with those in the unirrigated soils. 4-Consequently, it was concluded that the amounts of the trace elements such as Fe, Cu, Zn and Mn accumulated in the soil profiles of the irrigated agricultural lands might have reached to the toxic and hazardous levels for the plants grown on those soils and also for the animals and human beings fed with the plants grown on those agricultural lands irrigated with the municipal waste water for the long term (10-15 days or more).