Like other cities of Rajasthan, Kota is also known for its architecture of dominion period. Many buildings constructed during state time. Historical Jagmandir, an enchanting mini palace build of red stone amid the picturesque artificial tank Kishore Sagar is one of them. On one end Kishore Sagar Tank is linked to Kota barrage, which is built on river Chambal and on another end to right main canal. When right main canal is flowing in winter and spring seasons the water quality of KST is good but in lean seasons water hold in KST is contaminated by wastewater generated from nearby residential and commercial area. Therefore study in order to seasonal and spatial variation in water quality physico-chemical parameters was determined from October 07 to May 08. Aggressive index (Al) and Langelier Saturation Index (LSI) were calculated to interprets the impact of water quality on Jagmandir Palace, The results show adverse effect in summer sessions. To prevent this historical monument some corrective measures are suggested.