Almost 75 per cent sewage treatment plants in Maharashtra run without valid consents, reveals Maharashtra's State of Environment Report, 2007. The report, a public document released by Maharashtra Pollution Control Board (mpcb), outlines present conditions and some future projections on environment. Prepared by the Mumbai-based Indira Gandhi Institute of Development Research, the report is based on data studied against parameters such as water, air, noise and forests etc. However, there are concerns that some of the data are outdated