Water, a ubiquitous available resource, yet due to sheer mismanagement in water distribution there is always humungous pressure imbued on fresh water. The rudimentary aim of this project is to design an effective decentralized water distribution using EPANET and efficacious in-house greywater filter system with indigenously produced waste. The data on water distribution was collected from the local authority of Thamanur, Villupuram district, Tamil Nadu. The network was created using EPANET; the existing network had shortcomings such as negative pressure and unequal flow at certain nodes. Hence, the recommendation proposed was to enlarge the pipe diameter, adding more overhead tanks and installing pump’s in several locations. Subsequently with water budgeting, greywater considered to be more voluminous and less polluted can be treated and reused which provides a sustainable decentralized alternative to tackle water scarcity. In the realm of greywater treatment, greywater were collected and characterized for various basic physicochemical parameters using the APHA standard operating procedure. In the due course, two filter media prototypes were designed for 20 cm height and named as H20 and W20. Filters had top 3 cm with hay for H20 and wood chips for W20 respectively, and the filters had fixed layers from top to bottom with vetiver, alum, biochar, activated charcoal, sand, and gravel. Post-characterization of filters showed pH 6.8, turbidity of 25 NTU, hardness of 97.5 mg/L (85%), alkalinity of 79%, total solids of 2500 mg/L, and suspended solids of 200 mg/L. Hence, treated greywater can be reused for non-portable uses like floor washing, gardening, and toilet flushing.