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Frederick Town of

Water Supply, Longmont, Colorado. NPDES permit CO0049076, in force until Aug 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (8 values), outfall 002 form A monthly (8 values), outfall 003 form A monthly (8 values), outfall 004 form A monthly (8 values), outfall 005 form A monthly (8 values), outfall 006 form A monthly (8 values)
Last report on file
September 2026

Limits in force (48)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Aluminum, total recoverable30-day average≤ 1059 ug/Lall year001
Aluminum, total recoverabledaily maximum≤ 7419 ug/Lall year001
Flow, in conduit or thru treatment plant30-day average≤ .03878 MGDall year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Sulfate30-day averagereport only (mg/L)all year001
Sulfatedaily maximumreport only (mg/L)all year001
pHminimum≥ 6.5 SUall year002
pHmaximum≤ 9 SUall year002
Aluminum, total recoverable30-day average≤ 1059 ug/Lall year002
Aluminum, total recoverabledaily maximum≤ 7419 ug/Lall year002
Flow, in conduit or thru treatment plant30-day average≤ .03878 MGDall year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Sulfate30-day averagereport only (mg/L)all year002
Sulfatedaily maximumreport only (mg/L)all year002
pHminimum≥ 6.5 SUall year003
pHmaximum≤ 9 SUall year003
Aluminum, total recoverable30-day average≤ 1059 ug/Lall year003
Aluminum, total recoverabledaily maximum≤ 7419 ug/Lall year003
Flow, in conduit or thru treatment plant30-day average≤ .03878 MGDall year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003
Sulfate30-day averagereport only (mg/L)all year003
Sulfatedaily maximumreport only (mg/L)all year003
pHminimum≥ 6.5 SUall year004
pHmaximum≤ 9 SUall year004
Aluminum, total recoverable30-day average≤ 1059 ug/Lall year004
Aluminum, total recoverabledaily maximum≤ 7419 ug/Lall year004
Flow, in conduit or thru treatment plant30-day average≤ .03878 MGDall year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
Sulfate30-day averagereport only (mg/L)all year004
Sulfatedaily maximumreport only (mg/L)all year004
pHminimum≥ 6.5 SUall year005
pHmaximum≤ 9 SUall year005
Aluminum, total recoverable30-day average≤ 1059 ug/Lall year005
Aluminum, total recoverabledaily maximum≤ 7419 ug/Lall year005
Flow, in conduit or thru treatment plant30-day average≤ .03878 MGDall year005
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005
Sulfate30-day averagereport only (mg/L)all year005
Sulfatedaily maximumreport only (mg/L)all year005
pHminimum≥ 6.5 SUall year006
pHmaximum≤ 9 SUall year006
Aluminum, total recoverable30-day average≤ 1059 ug/Lall year006
Aluminum, total recoverabledaily maximum≤ 7419 ug/Lall year006
Flow, in conduit or thru treatment plant30-day average≤ .03878 MGDall year006
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year006
Sulfate30-day averagereport only (mg/L)all year006
Sulfatedaily maximumreport only (mg/L)all year006

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

Same industry: the 13 Water Supply permits in Colorado.

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Your permit document is the final word. As JSON: /api/v1/permits/CO0049076 · MCP: https://passage-data.com/mcp