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Usdoi Fish & Wildlife - Willow Beach National Fish Hatchery

Federal facility (Fish Hatcheries And Preserves), Willow Beach, Arizona. NPDES permit AZ0000132, in force until Aug 12, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 30 days after each period: form A monthly (14 values), form S twice a year
Last report on file
July 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 14 reports late

Limits in force (19)

These limits come from an earlier version of this permit (version 3 in EPA's file); its current version holds none yet. A renewal can change them.

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
pHminimumreport only (SU)all year
pHminimum≥ 6.5 SUall year
pHmaximumreport only (SU)all year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 10 mg/Lall year
Solids, total suspendeddaily maximum≤ 15 mg/Lall year
Solids, total suspendedmonthly average≤ 330 kg/dall year
Solids, total suspendeddaily maximum≤ 490 kg/dall year
Nitrogen, ammonia total [as N]monthly averagereport only (Ratio)all year
Nitrogen, ammonia total [as N]daily maximumreport only (Ratio)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Solids, total dissolvedmonthly averagereport only (mg/L)all year
Solids, total dissolveddaily maximumreport only (mg/L)all year
Solids, total dissolvedmonthly averagereport only (mg/L)all year
Solids, total dissolveddaily maximumreport only (mg/L)all year
Solids, total dissolvedmonthly averagereport only (mg/L)all year
Solids, total dissolveddaily maximumreport only (mg/L)all year

How strict are these limits?

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

Same industry: the 6 Fishing, Hunting and Trapping permits in Arizona.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AZ0000132 · MCP: https://passage-data.com/mcp