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City of Troy

Water Supply, Troy, New York. NPDES permit NY0205401, in force until Apr 30, 2031. Last 12 months: over a limit 46 times (last August 2026), 4 of 30 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form X monthly (15 values), outfall 003 form X monthly (15 values), outfall 001 form V quarterly, outfall 003 form V quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
59 values over a limit, 0 required values missing, 0 of 32 reports late

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

All 46 values over a limit
Period endingOutfallParameterReportedLimitOver by
October 2025001Iron, total [as Fe], daily maximum2.16 mg/L≤ .3 mg/L620%
October 2025001Manganese, total [as Mn], daily maximum29.7 mg/L≤ 4 mg/L643%
October 2025001Manganese, total [as Mn], monthly average23.5 mg/L≤ 2 mg/L1075%
October 2025001Solids, settleable, daily maximum2 mL/L≤ .1 mL/L1900%
October 2025001Solids, total suspended, daily maximum91 mg/L≤ 40 mg/L128%
October 2025001Solids, total suspended, monthly average70.5 mg/L≤ 20 mg/L253%
November 2025001Chlorine, total residual, daily maximum.16 mg/L≤ .02 mg/L700%
November 2025001Iron, total [as Fe], daily maximum.748 mg/L≤ .3 mg/L149%
November 2025001Manganese, total [as Mn], daily maximum8.03 mg/L≤ 4 mg/L101%
November 2025001Manganese, total [as Mn], monthly average5.55 mg/L≤ 2 mg/L178%
November 2025001Solids, settleable, daily maximum3.5 mL/L≤ .1 mL/L3400%
November 2025003Iron, total [as Fe], daily maximum.556 mg/L≤ .3 mg/L85%
November 2025003Manganese, total [as Mn], daily maximum7.88 mg/L≤ 4 mg/L97%
November 2025003Manganese, total [as Mn], monthly average7.88 mg/L≤ 2 mg/L294%
December 2025001Chlorine, total residual, daily maximum.07 mg/L≤ .02 mg/L250%
December 2025001Iron, total [as Fe], daily maximum4.93 mg/L≤ .3 mg/L1543%
December 2025001Manganese, total [as Mn], daily maximum12.5 mg/L≤ 4 mg/L213%
December 2025001Manganese, total [as Mn], monthly average10.25 mg/L≤ 2 mg/L413%
December 2025001Solids, settleable, daily maximum24 mL/L≤ .1 mL/L23900%
December 2025001Solids, total suspended, daily maximum277 mg/L≤ 40 mg/L593%
December 2025001Solids, total suspended, monthly average142.13 mg/L≤ 20 mg/L611%
January 2026001Chlorine, total residual, daily maximum.05 mg/L≤ .02 mg/L150%
January 2026001Iron, total [as Fe], daily maximum.636 mg/L≤ .3 mg/L112%
January 2026001Manganese, total [as Mn], monthly average3.21 mg/L≤ 2 mg/L61%
January 2026001Solids, settleable, daily maximum10 mL/L≤ .1 mL/L9900%
January 2026001Solids, total suspended, daily maximum48.4 mg/L≤ 40 mg/L21%
January 2026001Solids, total suspended, monthly average28.95 mg/L≤ 20 mg/L45%
February 2026001Chlorine, total residual, daily maximum.24 mg/L≤ .02 mg/L1100%
February 2026001Iron, total [as Fe], daily maximum.557 mg/L≤ .3 mg/L86%
February 2026001Manganese, total [as Mn], daily maximum6.76 mg/L≤ 4 mg/L69%
February 2026001Manganese, total [as Mn], monthly average5.72 mg/L≤ 2 mg/L186%
March 2026001Chlorine, total residual, daily maximum.06 mg/L≤ .02 mg/L200%
April 2026001Chlorine, total residual, daily maximum.07 mg/L≤ .02 mg/L250%
April 2026001Iron, total [as Fe], daily maximum.328 mg/L≤ .3 mg/L9%
April 2026001Manganese, total [as Mn], monthly average2.51 mg/L≤ 2 mg/L26%
April 2026003Iron, total [as Fe], daily maximum.411 mg/L≤ .3 mg/L37%
April 2026003Manganese, total [as Mn], monthly average2.51 mg/L≤ 2 mg/L26%
May 2026001Manganese, total [as Mn], daily maximum6.85 mg/L≤ 4 mg/L71%
May 2026001Manganese, total [as Mn], monthly average6.43 mg/L≤ 2 mg/L222%
June 2026001Chlorine, total residual, daily maximum.12 mg/L≤ .02 mg/L500%
July 2026001Chlorine, total residual, daily maximum.1 mg/L≤ .02 mg/L400%
July 2026001Manganese, total [as Mn], daily maximum6.45 mg/L≤ 4 mg/L61%
July 2026001Manganese, total [as Mn], monthly average5.65 mg/L≤ 2 mg/L183%
August 2026001Iron, total [as Fe], daily maximum.311 mg/L≤ .3 mg/L4%
August 2026001Manganese, total [as Mn], daily maximum12.3 mg/L≤ 4 mg/L208%
August 2026001Manganese, total [as Mn], monthly average10.06 mg/L≤ 2 mg/L403%

Limits in force (32)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 20 mg/Lall year001
Solids, total suspendeddaily maximum≤ 40 mg/Lall year001
Solids, settleablemonthly averagereport only (mL/L)all year001
Solids, settleabledaily maximum≤ .1 mL/Lall year001
Fluoride, total [as F]daily maximumreport only (mg/L)all year001
Iron, total [as Fe]monthly averagereport only (mg/L)all year001
Iron, total [as Fe]daily maximum≤ .3 mg/Lall year001
Manganese, total [as Mn]monthly average≤ 2 mg/Lall year001
Manganese, total [as Mn]daily maximum≤ 4 mg/Lall year001
Aluminum, dissolved [as Al]daily maximum≤ .5 mg/L (alert, not enforceable)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmonthly averagereport only (mg/L)all year001
Chlorine, total residualdaily maximum≤ .02 mg/Lall year001
pHminimum≥ 6 SUall year003
pHmaximum≤ 9 SUall year003
Solids, total suspendedmonthly average≤ 20 mg/Lall year003
Solids, total suspendeddaily maximum≤ 40 mg/Lall year003
Solids, settleablemonthly averagereport only (mL/L)all year003
Solids, settleabledaily maximum≤ .1 mL/Lall year003
Fluoride, total [as F]daily maximumreport only (mg/L)all year003
Iron, total [as Fe]monthly averagereport only (mg/L)all year003
Iron, total [as Fe]daily maximum≤ .3 mg/Lall year003
Manganese, total [as Mn]monthly average≤ 2 mg/Lall year003
Manganese, total [as Mn]daily maximum≤ 4 mg/Lall year003
Aluminum, dissolved [as Al]daily maximum≤ .5 mg/L (alert, not enforceable)all year003
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003
Chlorine, total residualmonthly averagereport only (mg/L)all year003
Chlorine, total residualdaily maximum≤ .02 mg/Lall year003

How strict are these limits?

Cited limits by parameter: New York's rules and the federal ones.

Same industry: the 53 Water Supply permits in New York.

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Your permit document is the final word. As JSON: /api/v1/permits/NY0205401 · MCP: https://passage-data.com/mcp