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United States Department of the Interior - Fish and Wildlife Services

Federal facility (Fish Hatcheries And Preserves), Celina, Tennessee. NPDES permit TN0004332, in force until Aug 31, 2029. Last 12 months: no values over a limit, 7 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: form G monthly (10 values)
Last report on file: August 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 10 of 12 reports late

Limits in force (11)

Parameter	Statistic	Limit	Months
Oxygen, dissolved [DO]	minimum	≥ 6 mg/L	all year
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 9 SU	all year
Solids, total suspended	daily maximum	≤ 15 mg/L	all year
Solids, settleable	daily maximum	≤ .5 mL/L	all year
Nitrogen, ammonia total [as N]	daily maximum	≤ 1.2 mg/L	May–Oct
Nitrogen, ammonia total [as N]	daily maximum	≤ 2.4 mg/L	Jan, Feb, Mar, Apr, Nov, Dec
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year
LC50 Static 48Hr Acute Ceriodaphnia dubia	minimum	≥ 100 %	all year
LC50 Static 48Hr Acute Pimephales promelas	minimum	≥ 100 %	all year

How strict are these limits?

Nitrogen, ammonia total [as N], daily maximum 1.2 mg/L — stricter than 98% of 74 other minor federal facilities nationwide
Solids, total suspended, daily maximum 15 mg/L — stricter than 91% of 147 other minor federal facilities nationwide; 3% have the same limit
Solids, settleable, daily maximum .5 mL/L — stricter than 52% of 25 other minor federal facilities nationwide; 8% have the same limit

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

Same industry: the 7 Fishing, Hunting and Trapping permits in Tennessee.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TN0004332 · MCP: https://passage-data.com/mcp