ISDS 



condominiums) were a "commons" without a single identifiable responsible owner and 

 tended to be used and abused without receiving sufficient physical or financial attention. 

 The location of large systems is carefully restricted, and town inspection, maintenance, and 

 fee collection responsibilities are clearly stated in the SMA. The foreknowtege of town 

 responsibilities tends to support zoning which adequately considers siting parameters. 



A key advantage of the PHD approach rests in its flexibility. The SMAs can be tailored 

 to accommodate spadal and temporal changes, and can include provisions for unusual local 

 circumstances. The program has also allowed for effective delegation of responsibility to 

 towns 



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