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Carter County Board of Education dba Carter County Schools

Sewage treatment plant, Hampton, Tennessee. NPDES permit TN0023698, in force until May 31, 2031. Last 12 months: over a limit 3 times (last September 2026), 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: form G monthly (15 values)
Last report on file: September 2026
Oct 2024 – Sep 2025: 4 values over a limit, 4 required values missing, 6 of 12 reports late

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

Period ending	Parameter	Reported	Limit	Over by
February 2026	Nitrogen, ammonia total [as N], monthly average	14.1 mg/L	≤ 5 mg/L	182%
April 2026	Nitrogen, ammonia total [as N], monthly average	12.2 mg/L	≤ 5 mg/L	144%
September 2026	Nitrogen, ammonia total [as N], daily maximum	15.6 mg/L	≤ 10 mg/L	56%

Limits in force (15)

These limits come from an earlier version of this permit (version 5 in EPA's file); its current version holds none yet. A renewal can change them.

Parameter	Statistic	Limit	Months
Oxygen, dissolved [DO]	instantaneous minimum	≥ 6 mg/L	all year
pH	daily minimum	≥ 6 SU	all year
pH	daily maximum	≤ 9 SU	all year
Solids, total suspended	monthly average	≤ 30 mg/L	all year
Solids, total suspended	daily maximum	≤ 45 mg/L	all year
Solids, settleable	daily maximum	≤ 1 mL/L	all year
Nitrogen, ammonia total [as N]	monthly average	≤ 5 mg/L	all year
Nitrogen, ammonia total [as N]	daily maximum	≤ 10 mg/L	all year
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
Chlorine, total residual	daily maximum	≤ .6 mg/L	all year
E. coli	monthly average	≤ 126 #/100mL	all year
E. coli	daily maximum	≤ 487 #/100mL	all year
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 25 mg/L	all year
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 40 mg/L	all year

How strict are these limits?

Oxygen, dissolved [DO], instantaneous minimum at least 6 mg/L — stricter than 73% of 126 other minor POTWs in Tennessee; 26% have the same limit
Chlorine, total residual, daily maximum .6 mg/L — stricter than 42% of 170 other minor POTWs in Tennessee; 2% have the same limit
E. coli, daily maximum 487 #/100mL — stricter than 34% of 198 other minor POTWs in Tennessee; 17% have the same limit

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TN0023698 · MCP: https://passage-data.com/mcp