Maine / Dischargers /

City of Calais WWTP

CSO · Maine · Calais

NPDES permit

ME0100129

Outfalls

5 with coordinates in the registry (the state's layer lists 3)

Receiving waters

St. Croix River; Landing Brook

Tracked waters

Saint Croix River, ME

Events tracked

0 discharges

Volume reported

no volumes reported

Source: discharger record from the project's research and EPA ECHO (dischargers.json); counts from the 0 event records below, as of 2026-11-02 11:56 UTC.

How it tells the public

No event notification found. Permit requires a permanent 12x18 inch green 'wet weather sewage discharge' sign at each CSO outfall (standard MEPDES CSO special condition) and Ch. 570 annual newspaper notice; annual totals appear only in the DEP CSO Status Report (published each June-July for the prior year). Website check 2026-11-01: calaismaine.org has a generic 'Subscribe to Updates'; no CSO page seen.

• Outfall layer (source data)

Source: the project's research on each operator's notification channel (research/<state>/dischargers.json), checked by fetching the operator's pages.

Outfalls

Source: water outlines from OpenBoatLaunch and OpenStreetMap contributors (ODbL); outfalls from EPA ECHO and the state outfall layers; modeled reaches computed by DirtyWaterWatch from USGS NLDI, NHDPlus and the nearest USGS gauge (Jobson 1996); basemap OpenFreeMap and OpenMapTiles.

5 outfalls in the registry

• 003 HEADWORKS · CSO · St Croix River
• 004 Steamboat Street · CLS · St Croix River
• 005 UNION STREET PS · CSO · St Croix River
• 006 KING STREET PS · CSO · St Croix River
• 007 South Street · CLS · St Croix River

Source: EPA ECHO CSO outfall inventory matched to waters (data/outfalls-ne.json).

Event history

History