Septic Plots

Septic Plot

View the number of systems or populations per system. Select a range of years from 1984 through 2025.

Septic Map

View the number of septic systems (post BMPs). Select a year between 1984 through 2025. Results are displayed by county. Hover your cursor over a county to view county name and number of septic systems.

Note: Data presented for 2025 are from state Phase III WIPs.

Subset the data

Select Y-axis



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