Ranchi, Jan. 15: A first-ever water pollution audit carried out by the Comptroller and Auditor General (CAG) has pegged Jharkhand at the bottom of the performance chart with most river conservation projects lying incomplete in the state. According to the report, Performance Audit of Water Pollution in India, the Ganga, Damodar and Subernarekha were selected for pollution abatement projects in Jharkhand under the National River Conservation Programme (NRCP), which was launched in 1995.