EVALUATION OF MOSUL INFLOW'S WASTEWATER QUALITY FOR IRRIGATION

Wastewater is the term used for domestic, industrial, and agricultural liquid wastes that contain biodegradable materials, as well as non-biodegradable materials and compounds. pesticides, and plastic. 80% of wastewater globally is used to irrigate crops without prior treatment, especially with the scarcity of water resources which leads to the accumulation of salts, compounds, and heavy metals in the soil and crops, which causes soil deterioration and problems in plant growth and productivity or may be transmitted to humans through the food chain. Nine sites were chosen for wastewater from Mosul valleys. The results indicated that the concertation of lead, zinc, copper, nickel, and cobalt for most sites exceeded the Iraqi international standard limits. This means using this water to irrigate crops causes soil deterioration and pollution and poses health and environmental risks. Wastewater in all locations is considered very hard. Therefore, this water is not suitable for irrigating crops and can lead to deposits, blockage of pipes, and damage to irrigation systems. The value total solids (TDS), nitrates, phosphates, and sulfates at all sites was within global and Iraqi standard limits.