Smaller local treatment plants in place of a large central facility allow for considerable economical advantages including the reduction of costly collection infrastructure as well as providing the opportunity for smaller incremental-as-needed expansion phasing.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/snaw-naw-first-nation-decentralized-wwtp-nanoose-bay-bc-success-story-0
[2] http://admin.indiaenvironmentportal.org.in/category/author/justin-hebner
[3] http://admin.indiaenvironmentportal.org.in/category/journal/water-today
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-resources
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sewage-treatment-plants-stp
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wastewater-recycling
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/canada