Wetlands deliver a bunch of ecosystem services but are under continuous threat due to various anthropogenic activities. The present study has been carried out to examine the suitability of Kusheshwar-Asthan wetland's water for agriculture. Total 57 water samples were analyzed for various water quality parameters like electrical conductivity, pH, temperature, DO, major cations (Ca2+, Mg2+, Na+, K+), and major anions (PO43–, SO42−, N-NO3−, Cl−, HCO3−). Overall, the water of the wetland was found to be alkaline. The pre-monsoon samples had a relatively higher concentration in most of analyzed parameters except for pH, DO, NO3−, PO43− and Cl−. The concentration of cations follows the order of Na+ > Ca2+ > Mg2+ > K+ in both seasons and for anions it is HCO3− > SO42− > Cl− > NO3− > PO43− for pre-monsoon and HCO3− > Cl− > SO42− > NO3− > PO43− for post-monsoon. According to Piper diagram and Durov plot, Na-K-HCO3 was the major hydro-chemical facies of the surface water. The various irrigation quality parameters showed that wetland water falls in good to excellent quality. As a result, this finding can aid in the long-term sustainable use of the wetland water with regulated anthropogenic interventions. The study will be beneficial in designing long-term extensive management plans for the conservation of the wetland.