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Green Country Sewer Company

Sewerage Systems, Wagoner County, Oklahoma. NPDES permit OK0034754, in force until Aug 31, 2027. Last 12 months: over a limit 8 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (16 values)
Renewal application due
Mar 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
June 2026Nitrogen, ammonia total [as N], monthly average10.9 mg/L≤ 6 mg/L82%
June 2026Nitrogen, ammonia total [as N], monthly average83.6 lb/d≤ 37.5 lb/d123%
June 2026Nitrogen, ammonia total [as N], weekly average13.2 mg/L≤ 9 mg/L47%
July 2026Nitrogen, ammonia total [as N], monthly average66.9 lb/d≤ 37.5 lb/d78%
July 2026Nitrogen, ammonia total [as N], monthly average8.03 mg/L≤ 6 mg/L34%
July 2026Nitrogen, ammonia total [as N], weekly average12.7 mg/L≤ 9 mg/L41%
August 2026Nitrogen, ammonia total [as N], monthly average6.15 mg/L≤ 6 mg/L3%
August 2026Nitrogen, ammonia total [as N], weekly average9.95 mg/L≤ 9 mg/L11%

Limits in force (20)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 5 mg/LJan, Feb, Mar, Jun, Jul, Aug, Sep, Oct, Nov, Dec
Oxygen, dissolved [DO]minimum≥ 6 mg/LApr, May
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJan, Feb, Mar, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LJan, Feb, Mar, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 187.7 lb/dJan, Feb, Mar, Nov, Dec
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 187.7 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 6 mg/LJun–Oct
Nitrogen, ammonia total [as N]weekly average≤ 9 mg/LJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 37.5 lb/dJun–Oct
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
E. coligeometric mean≤ 126 CFU/100mLMay–Sep
E. colidaily maximum≤ 406 CFU/100mLMay–Sep
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LApr–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 22.5 mg/LApr–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 93.8 lb/dApr–Oct

How strict are these limits?

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

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/OK0034754 · MCP: https://passage-data.com/mcp