The study evaluated waste management practices in 2 major abattoirs in Ibadan, South West, Nigeria, through investigative survey/questionnaire, to educate dwellers in the vicinity of the danger abattoir operations pose to health and to assess the ethical practices of abattoir operators. Water samples taken from well water around the abattoirs were assessed for selected physical, chemical and microbiological properties. General Linear Model (GLM) procedure was used for statistical analysis. The survey showed that 100% of abattoir operators in both abattoirs disposed waste manually using spade, 90% sweep and wash the waste into open drainage, eventually flowing into streams and rivers around, 90% do not treat waste in any way before dumping at sites. All these give rise to the offensive odor and stench characteristic of the abattoir environment, leading to eutrophication. Study further showed that though the residents of the two abattoirs were aware of the danger abattoir operations pose to their health, majority of them (63%) were not ready to move from this vicinity. Water samples from the wells taken for analysis for physical, chemical and microbiological properties showed that heavy metal concentration-Cu (0.00) and Pb (0.00) at both abattoirs, Fe-0.00 at Bodija, 0.05± 0.01 at Akinyele, Zn-0.03 ± 0.03 and 0.16 ± 0.03 at Bodija and Akinyele respectively were not significantly different from each other, and were below the maximum permissible limit. Turbidity, total dissolved solids (TDS) and total suspended solids (TSS) were significantly different from each other in the two abattoirs. Total aerobic count (TAC) and coliform count (TCC) were 2.1 × 10⁶ and 6.3 × 10⁵, respectively, in the well water at Bodija, while TAC and TCC were 1.7 x 10⁶ and 7.6 × 10⁵ in wells at Akinyele. High biochemical oxygen demand (BOD) of 7.05 ± 0.25, dissolved oxygen (DO) 6.30 ± 0.14 and TAC of 2.8 × 10⁶ obtained on Wednesdays in both locations, significantly differed from those of Fridays. The high microbial load and its health implications further confirm the need to treat abattoir waste rather than discharge them to the environment. Portable water should be provided for operators.