This line chart displays the evolution of drinking water quality conclusions over time, using numerical values to represent different compliance levels. Built with React and D3 v7, the visualization renders as an SVG with time-scaled x-axis ticks and linear y-axis scaling. The code loads CSV data from a GitHub gist via `d3.csv`, sorts dates with `d3.ascending`, and uses `d3.line()` and `d3.timeFormat` to generate the path and formatted tick labels.