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ST. Regis Mohawk Tribe

Sewerage Systems, Hogansbury, SR. NPDES permit SR0026417 expired Nov 30, 2024; its limits still apply. Last 12 months: over a limit 8 times (last August 2026), 5 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form A monthly (9 values)
Last report on file: August 2026
Oct 2024 – Sep 2025: 5 values over a limit, 0 required values missing, 2 of 12 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period ending	Parameter	Reported	Limit	Over by
October 2025	Aluminum, total [as Al], daily maximum	4.6 mg/L	≤ 4 mg/L	15%
October 2025	Aluminum, total [as Al], monthly average	3.45 mg/L	≤ 2 mg/L	73%
October 2025	pH, maximum	8.78 SU	≤ 8.5 SU	—
November 2025	Aluminum, total [as Al], monthly average	2.2 mg/L	≤ 2 mg/L	10%
April 2026	pH, minimum	6.28 SU	≥ 6.5 SU	—
July 2026	Aluminum, total [as Al], monthly average	2.5 mg/L	≤ 2 mg/L	25%
July 2026	Chlorine, total residual, daily maximum	2.2 mg/L	≤ .5 mg/L	340%
August 2026	Aluminum, total [as Al], monthly average	2.3 mg/L	≤ 2 mg/L	15%

Limits in force (9)

Parameter	Statistic	Limit	Months
pH	minimum	≥ 6.5 SU	all year
pH	maximum	≤ 8.5 SU	all year
Solids, total suspended	monthly average	≤ 20 mg/L	all year
Solids, total suspended	daily maximum	≤ 40 mg/L	all year
Solids, settleable	daily maximum	≤ .1 mL/L	all year
Aluminum, total [as Al]	monthly average	≤ 2 mg/L	all year
Aluminum, total [as Al]	daily maximum	≤ 4 mg/L	all year
Flow, in conduit or thru treatment plant	daily maximum	≤ 1.4 MGD	all year
Chlorine, total residual	daily maximum	≤ .5 mg/L	all year

How strict are these limits?

pH, maximum 8.5 SU — stricter than 86% of 6,634 other minor industrial and other permits nationwide; 12% have the same limit
Solids, total suspended, daily maximum 40 mg/L — stricter than 72% of 8,109 other minor industrial and other permits nationwide; 7% have the same limit
pH, minimum at least 6.5 SU — stricter than 70% of 7,060 other minor industrial and other permits nationwide; 28% have the same limit

Cited limits by parameter: the federal ones.

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Your permit document is the final word. As JSON: /api/v1/permits/SR0026417 · MCP: https://passage-data.com/mcp