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Worthington Industries Inc

Primary Metal Products, major discharger, Delta, Ohio. NPDES permit OH0122271, in force until Feb 28, 2029. Last 12 months: over a limit 7 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (27 values), outfall 601 form A monthly (12 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 0 of 24 reports late

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

Period endingParameterReportedLimitOver by
October 2025Oxygen, dissolved [DO], daily minimum2.6≥ 4 mg/L35%
December 2025Oxygen, dissolved [DO], daily minimum2.4≥ 4 mg/L40%
January 2026Oxygen, dissolved [DO], daily minimum1.9≥ 4 mg/L53%
May 2026Oxygen, dissolved [DO], daily minimum2.4≥ 4 mg/L40%
June 2026Oxygen, dissolved [DO], daily minimum2.5≥ 4 mg/L38%
July 2026Oxygen, dissolved [DO], daily minimum3.5≥ 4 mg/L13%
August 2026Phosphorus, total [as P], daily maximum1.15≤ 1 mg/L15%

Limits in force (47)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
Oxygen, dissolved [DO]daily minimum≥ 4 mg/Lall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Oil and grease [soxhlet extr.] tot.daily maximum≤ 10 mg/Lall year001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]daily maximum≤ 1 mg/Lall year001
Phosphorus, total [as P]daily maximum≤ .4 kg/dall year001
Iron, total recoverablemonthly averagereport only (ug/L)all year001
Iron, total recoverabledaily maximumreport only (ug/L)all year001
Nickel, total recoverablemonthly averagereport only (ug/L)Jun, Dec001
Nickel, total recoverabledaily maximumreport only (ug/L)Jun, Dec001
Zinc, total recoverabledaily maximum≤ 450 ug/Lall year001
Zinc, total recoverabledaily maximum≤ .22 kg/dall year001
Lead, total recoverablemonthly average≤ 488 ug/Lall year001
Lead, total recoverabledaily maximum≤ 640 ug/Lall year001
Lead, total recoverablemonthly average≤ .24 kg/dall year001
Lead, total recoverabledaily maximum≤ .31 kg/dall year001
Chromium, total recoverablemonthly averagereport only (ug/L)Jun, Dec001
Chromium, total recoverabledaily maximumreport only (ug/L)Jun, Dec001
Copper, total recoverablemonthly averagereport only (ug/L)all year001
Copper, total recoverabledaily maximumreport only (ug/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualdaily maximum≤ .038 mg/Lall year001
Mercury, total low levelmonthly averagereport only (ng/L)Jun, Dec001
Mercury, total low leveldaily maximumreport only (ng/L)Jun, Dec001
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 1 tox acuteMar, Jun, Aug, Dec001
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximum≤ 1 tox acuteMar, Jun, Aug, Dec001
pH, maximumdaily maximum≤ 9 SUall year001
pH, minimumdaily minimum≥ 6.5 SUall year001
Solids, total dissolved- 180 deg. Cmonthly averagereport only (mg/L)all year001
Solids, total dissolved- 180 deg. Cdaily maximumreport only (mg/L)all year001
Solids, total suspendedmonthly average≤ 27.4 kg/dall year601
Solids, total suspendeddaily maximum≤ 134 kg/dall year601
Oil and grease [soxhlet extr.] tot.monthly average≤ 13.6 kg/dall year601
Oil and grease [soxhlet extr.] tot.daily maximum≤ 41 kg/dall year601
Zinc, total recoverablemonthly average≤ .38 kg/dall year601
Zinc, total recoverabledaily maximum≤ 1.15 kg/dall year601
Lead, total recoverablemonthly average≤ .29 kg/dall year601
Lead, total recoverabledaily maximum≤ .86 kg/dall year601
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year601
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year601
pH, maximumdaily maximum≤ 9 SUall year601
pH, minimumdaily minimum≥ 6 SUall year601

How strict are these limits?

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

Same industry: the 56 Primary Metal Industries permits in Ohio.

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Your permit document is the final word. As JSON: /api/v1/permits/OH0122271 · MCP: https://passage-data.com/mcp