eng Science and Education Publishing World Journal of Analytical Chemistry 2333-1283 2023-08-31 8 1 6 12 10.12691/wjac-8-1-2 WJAC2023812 article Kefa K. Onchoke Onchokekk@sfasu.edu 1 Department of Chemistry & Biochemistry, Stephen F. Austin State University, Box 13006 ¨C SFA Station, Nacogdoches, Texas, 75962-13006, USA In this data article, the bioavailability of elements in municipal wastewater sludge (also known as biosolids) in samples collected from three treatment plants in East Texas, USA was evaluated. Although detailed speciation of the metals were assessed by using inductively coupled plasma optical spectroscopy (ICP-OES), and were discussed in the research article titled ˇ°Evaluating bioavailability of elements in municipal wastewater sludge (Biosolids) from three rural wastewater treatment plants in East Texas (USA) by a sequential extraction procedureˇ± , this report presents the absolute raw concentrations and fractionations of the 26 metals from the biosolids (Nacogdoches Wastewater Sludge, Lufkin Wastewater Sludge, and Neches Compost sludge; NWWS, LWWS, NCS) produced from three wastewater treatments plants in East Texas. This data is important and useful for understanding the bioavailability of each of the elements in biosolids generated from activated wastewater treatment plants. http://pubs.sciepub.com/wjac/8/1/2/wjac-8-1-2.pdf Sludge/biosolids element bioavailability wastewater treatment plants metal speciation ICP-OES