The main goal of the WHOW project is to build an open and distributed knowledge graph that is capable of integrating and standardising heterogeneous data of the environmental and health domains coming from several data sources and available in different formats and structures. The ultimate goal is fostering the creation of innovative applications, services and studies on top of the WHOW knowledge graph.Besides the business use cases that are going to be extensively described in deliverable D2.1 to be released at the end of December 2021, a key aspect of the WHOW project is the design of a fully distributed technical architecture for effective creation and publication of the WHOW open and distributed knowledge graph. This document presents the result of the implementation and deployment of the WHOW Architecture obtained for Milestone #8 (The technical architecture is deployed). The implementation and deployment relies on the analysis and design presented in the Deliverable 4.1 and addressing the Milestone #7 (Design of the technical services for knowledge graph management is finalised). More specifically, the document presents our outcomes in terms of: (i) a set of reusable components for knowledge graph creation and management, called the WHOW Toolkit, that we implemented in the context of the WHOW project; and (ii) a novel semantic knowledge graph for water quality and sanitation. The WHOW Toolkit and knowledge graph are further integrated in a broader software deployment that includes existing open source solutions we reused for providing interaction capabilities to users, being them either humans or applications. By interaction capabilities we mean accessing, querying, and visualising the knowledge graph as well as using the services provided by the WHOW Toolkit. These are exposed through REST API or WebSocket interfaces depending on specific cases that we detail in next chapters and sections.