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Yale Water & Sewage Trust WWTF

Sewage treatment plant, Yale, Oklahoma. NPDES permit OK0028509, in force until Feb 28, 2029. Last 12 months: over a limit 66 times (last August 2026), 50 required values missing, 6 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (17 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
22 values over a limit, 30 required values missing, 2 of 12 reports late

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

All 66 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, carbonaceous [5 day, 20 C], monthly average14 mg/L≤ 10 mg/L40%
October 2025BOD, carbonaceous [5 day, 20 C], weekly average18 mg/L≤ 15 mg/L20%
October 2025Chlorine, total residual, instantaneous maximum.38 mg/L≤ .099 mg/L284%
October 2025E. coli, daily maximum20000 CFU/100mL≤ 2030 CFU/100mL885%
October 2025E. coli, geometric mean14863 CFU/100mL≤ 630 CFU/100mL2259%
October 2025Nitrogen, ammonia total [as N], monthly average22.1 mg/L≤ 6 mg/L268%
October 2025Nitrogen, ammonia total [as N], weekly average25 mg/L≤ 9 mg/L178%
November 2025BOD, 5-day, 20 deg. C, monthly average128 mg/L≤ 20 mg/L540%
November 2025BOD, 5-day, 20 deg. C, weekly average232 mg/L≤ 30 mg/L673%
November 2025E. coli, daily maximum20000 CFU/100mL≤ 2030 CFU/100mL885%
November 2025Solids, total suspended, monthly average99 mg/L≤ 30 mg/L230%
November 2025Solids, total suspended, weekly average171 mg/L≤ 45 mg/L280%
December 2025BOD, 5-day, 20 deg. C, monthly average31.83 mg/L≤ 20 mg/L59%
December 2025BOD, 5-day, 20 deg. C, weekly average38.7 mg/L≤ 30 mg/L29%
December 2025E. coli, daily maximum20000 CFU/100mL≤ 2030 CFU/100mL885%
December 2025pH, minimum6.47 SU≥ 6.5 SU—
January 2026BOD, 5-day, 20 deg. C, monthly average40.4 mg/L≤ 20 mg/L102%
January 2026BOD, 5-day, 20 deg. C, weekly average46.9 mg/L≤ 30 mg/L56%
January 2026E. coli, daily maximum20000 CFU/100mL≤ 2030 CFU/100mL885%
January 2026pH, minimum3.04 SU≥ 6.5 SU—
February 2026BOD, 5-day, 20 deg. C, monthly average51.25 mg/L≤ 20 mg/L156%
February 2026BOD, 5-day, 20 deg. C, weekly average60.7 mg/L≤ 30 mg/L102%
February 2026E. coli, daily maximum15400 CFU/100mL≤ 2030 CFU/100mL659%
February 2026E. coli, geometric mean2848.49 CFU/100mL≤ 630 CFU/100mL352%
February 2026Solids, total suspended, monthly average83.4 mg/L≤ 30 mg/L178%
February 2026Solids, total suspended, weekly average130 mg/L≤ 45 mg/L189%
March 2026Chlorine, total residual, instantaneous maximum.15 mg/L≤ .099 mg/L52%
March 2026E. coli, daily maximum4300 CFU/100mL≤ 2030 CFU/100mL112%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average23.95 mg/L≤ 15 mg/L60%
April 2026BOD, carbonaceous [5 day, 20 C], weekly average28.3 mg/L≤ 22.5 mg/L26%
April 2026E. coli, daily maximum20000 CFU/100mL≤ 2030 CFU/100mL885%
April 2026E. coli, geometric mean2414 CFU/100mL≤ 630 CFU/100mL283%
April 2026Solids, total suspended, monthly average30.1 mg/L≤ 30 mg/L0%
April 2026pH, minimum6.13 SU≥ 6.5 SU—
May 2026BOD, carbonaceous [5 day, 20 C], monthly average30.4 mg/L≤ 15 mg/L103%
May 2026BOD, carbonaceous [5 day, 20 C], weekly average34.1 mg/L≤ 22.5 mg/L52%
May 2026E. coli, daily maximum20000 CFU/100mL≤ 406 CFU/100mL4826%
May 2026E. coli, geometric mean1633.76 CFU/100mL≤ 126 CFU/100mL1197%
May 2026Oxygen, dissolved [DO], minimum1.38 mg/L≥ 5 mg/L72%
May 2026Solids, total suspended, monthly average39.3 mg/L≤ 30 mg/L31%
May 2026pH, minimum6.21 SU≥ 6.5 SU—
June 2026BOD, carbonaceous [5 day, 20 C], monthly average15.07 mg/L≤ 10 mg/L51%
June 2026BOD, carbonaceous [5 day, 20 C], weekly average24.5 mg/L≤ 15 mg/L63%
June 2026E. coli, daily maximum20000 CFU/100mL≤ 406 CFU/100mL4826%
June 2026E. coli, geometric mean1049.43 CFU/100mL≤ 126 CFU/100mL733%
June 2026Nitrogen, ammonia total [as N], monthly average8.65 mg/L≤ 6 mg/L44%
June 2026Nitrogen, ammonia total [as N], weekly average13 mg/L≤ 9 mg/L44%
June 2026Oxygen, dissolved [DO], minimum3.7 mg/L≥ 4 mg/L8%
June 2026Solids, total suspended, monthly average81.15 mg/L≤ 15 mg/L441%
June 2026Solids, total suspended, weekly average95.3 mg/L≤ 22.5 mg/L324%
June 2026pH, minimum6.15 SU≥ 6.5 SU—
July 2026BOD, carbonaceous [5 day, 20 C], monthly average17.3 mg/L≤ 10 mg/L73%
July 2026BOD, carbonaceous [5 day, 20 C], weekly average21.7 mg/L≤ 15 mg/L45%
July 2026E. coli, daily maximum20000 CFU/100mL≤ 406 CFU/100mL4826%
July 2026E. coli, geometric mean2720.1 CFU/100mL≤ 126 CFU/100mL2059%
July 2026Nitrogen, ammonia total [as N], monthly average18.1 mg/L≤ 6 mg/L202%
July 2026Nitrogen, ammonia total [as N], weekly average20.8 mg/L≤ 9 mg/L131%
July 2026Oxygen, dissolved [DO], minimum3.42 mg/L≥ 4 mg/L15%
July 2026Solids, total suspended, monthly average45.5 mg/L≤ 15 mg/L203%
July 2026Solids, total suspended, weekly average50 mg/L≤ 22.5 mg/L122%
July 2026pH, minimum6.38 SU≥ 6.5 SU—
August 2026E. coli, daily maximum20000 CFU/100mL≤ 406 CFU/100mL4826%
August 2026E. coli, geometric mean204 CFU/100mL≤ 126 CFU/100mL62%
August 2026Nitrogen, ammonia total [as N], monthly average18.4 mg/L≤ 6 mg/L207%
August 2026Nitrogen, ammonia total [as N], weekly average23 mg/L≤ 9 mg/L156%
August 2026Solids, total suspended, monthly average16.8 mg/L≤ 15 mg/L12%

Limits in force (32)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 5 mg/LApr, May
Oxygen, dissolved [DO]minimum≥ 4 mg/LJun–Oct
BOD, 5-day, 20 deg. Cmonthly average≤ 20 mg/LJan, Feb, Mar, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 30 mg/LJan, Feb, Mar, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 35 lb/dJan, Feb, Mar, Nov, Dec
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/LJun–Oct
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Solids, total suspendedweekly average≤ 22.5 mg/LJun–Oct
Solids, total suspendedweekly average≤ 45 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Solids, total suspendedmonthly average≤ 26.3 lb/dJun–Oct
Solids, total suspendedmonthly average≤ 52.5 lb/dJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 6 mg/LJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 7 mg/LApr, May
Nitrogen, ammonia total [as N]weekly average≤ 9 mg/LJun–Oct
Nitrogen, ammonia total [as N]weekly average≤ 10.5 mg/LApr, May
Nitrogen, ammonia total [as N]monthly average≤ 10.5 lb/dJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 12.3 lb/dApr, May
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualinstantaneous maximum≤ .099 mg/Lall year
E. coligeometric mean≤ 126 CFU/100mLMay–Sep
E. coligeometric mean≤ 630 CFU/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
E. colidaily maximum≤ 406 CFU/100mLMay–Sep
E. colidaily maximum≤ 2030 CFU/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LApr, May
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LJun–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 22.5 mg/LApr, May
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/LJun–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 26.3 lb/dApr, May
BOD, carbonaceous [5 day, 20 C]monthly average≤ 17.5 lb/dJun–Oct

How strict are these limits?

Cited limits by parameter: Oklahoma'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/OK0028509 · MCP: https://passage-data.com/mcp