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Water Supply — NPDES discharge permits in Massachusetts

Of the 4 permits in EPA's SIC 4941 in MA, 2 went over a limit between 2025-10-01 and 2026-09-30 (Number of Events: 1; Salinity: 1; Solids, total suspended: 1). 2 are past the expiry date EPA's file holds; 0 have a renewal application overdue or due within 18 months. EPA's file of 2026-10-15.

FacilityLast 12 monthsPermit
Swansea Water District
MA0103390 · Water Supply
Over a limit 3×: Solids, total suspended (2×), Salinity (1×)Expires Jun 30, 2030
Aquaria Water LLC /Inima USA Corp.
MA0040193 · Water Supply
Over a limit 2×: Number of Events (2×)Expires Aug 31, 2030
John J. Carroll Water Treatment Plant
MA0040398 · Water Supply
No value over a limit; 3 required values not reportedPermit past the expiry date EPA's file holds
West Parish Filters Water Treatment Plant
MA0040482 · Water Supply
No value over a limitPermit past the expiry date EPA's file holds

The record is EPA's ICIS-NPDES file of 2026-10-15: values filed against each limit between Oct 1, 2025 and Sep 30, 2026. No reports on file may be EPA's gap, not the facility's.

For programs and AI agents: this screen as JSON at /api/v1/permits?state=MA&sic=4941, narrowed with &over_limit=true, &parameter=phosphorus or &renewal=due; or add https://passage-data.com/mcp as a remote MCP server (tool list_permits). Free, no key. llms.txt

From EPA's ECHO data, not the permit document itself: your permit is the final word. All states