MUMBAI: In a bid to ensure that all healthcare units comply with the rules related to disposal of bio-medical waste, the Maharashtra Pollution Control Board (MPCB) has initiated action against 230 erring establishments. Of these, 100 have been served with closure notices, while the rest have been asked to comply with the norms within 15 days or face consequences (closure notice). The notice to these establishments was served on May 9. "We have issued notices to erring establishments. If they fail to comply with the norms of the board, they will be prosecuted,'' said Valsa Nair-Singh, secretary of the state environment department. The department first dispatches a warning letter to the erring healthcare unit. If the establishment ignores the warning, it is served with a closure notice. The MPCB can disconnect the unit's water and electricity supply if it continues to operate despite the closure notice, said Nair-Singh. As per the board rules, it is mandatory for all healthcare establishments to obtain authorisation for generation and treatment of bio-medical waste at their facilities. There are 31,795 healthcare establishments in the state. Of these, 5,271 come under the purview of the MPCB. A survey conducted by the MPCB found that 4,402 of the establishments did not have the mandatory authorisation from the board. The state has 24 sites for the disposal of bio-medical waste, and has identified five more sites to ensure better disposal of such waste.