Passage Data · Check a report · Use it from your AI

Hartshorne, City of

Sewage treatment plant, Hartshorne, Oklahoma. NPDES permit OK0022861, in force until Feb 28, 2029. Last 12 months: over a limit 6 times (last July 2026), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (16 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
4 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
May 2026E. coli, daily maximum1986.3 MPN/100mL≤ 406 MPN/100mL389%
May 2026E. coli, geometric mean273.3 MPN/100mL≤ 126 MPN/100mL117%
June 2026E. coli, daily maximum980.4 MPN/100mL≤ 406 MPN/100mL141%
June 2026E. coli, geometric mean201.7 MPN/100mL≤ 126 MPN/100mL60%
June 2026Solids, total suspended, monthly average15.6 mg/L≤ 15 mg/L4%
July 2026E. coli, daily maximum1203.3 MPN/100mL≤ 406 MPN/100mL196%

Limits in force (34)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly minimum≥ 5 mg/LMar–May
Oxygen, dissolved [DO]monthly minimum≥ 4 mg/LJan, Feb, Jun, Jul, Aug, Sep, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 20 mg/LJan, Feb, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 30 mg/LJan, Feb, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 83.4 lb/dJan, Feb, 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, Nov, Dec
Solids, total suspendedmonthly average≤ 20 mg/LMar–May
Solids, total suspendedweekly average≤ 22.5 mg/LJun–Oct
Solids, total suspendedweekly average≤ 45 mg/LJan, Feb, Nov, Dec
Solids, total suspendedweekly average≤ 30 mg/LMar–May
Solids, total suspendedmonthly average≤ 62.6 lb/dJun–Oct
Solids, total suspendedmonthly average≤ 125.1 lb/dJan, Feb, Nov, Dec
Solids, total suspendedmonthly average≤ 83.4 lb/dMar–May
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/LJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/LMar–May
Nitrogen, ammonia total [as N]weekly average≤ 4.5 mg/LJun–Oct
Nitrogen, ammonia total [as N]weekly average≤ 6 mg/LMar–May
Nitrogen, ammonia total [as N]monthly average≤ 12.5 lb/dJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 16.7 lb/dMar–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
E. coligeometric mean≤ 126 MPN/100mLMay–Sep
E. coligeometric mean≤ 630 MPN/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
E. colidaily maximum≤ 406 MPN/100mLMay–Sep
E. colidaily maximum≤ 2030 MPN/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LMar–May
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LJun–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 22.5 mg/LMar–May
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/LJun–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 62.6 lb/dMar–May
BOD, carbonaceous [5 day, 20 C]monthly average≤ 41.7 lb/dJun–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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OK0022861 · MCP: https://passage-data.com/mcp