Interactive Map

Active EPA-registered community water systems, plotted at county centroid — SDWIS does not publish exact facility coordinates for security reasons.

0 systems plotted

Filters & layers

Environmental overlays

Risk legend

  • Low (0–34)
  • Moderate (35–54)
  • Elevated (55–74)
  • Critical (75+)

Coverage — RI

Marker size reflects population served. Clustered below zoom 7 for performance.

Loading EPA registry for RI…