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Plating And Polishing, major discharger, Peru, Illinois. NPDES permit IL0001724 expired Jun 30, 2025; its limits still apply. Last 12 months: over a limit 5 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| February 2026 | Oil & Grease, 30-day average | 17.4 mg/L | ≤ 15 mg/L | 16% |
| February 2026 | Oil & Grease, daily maximum | 45.7 mg/L | ≤ 30 mg/L | 52% |
| March 2026 | Aluminum, total [as Al], 30-day average | .092 lb/d | ≤ .089 lb/d | 3% |
| June 2026 | Chromium, hexavalent [as Cr], 30-day average | .128 mg/L | ≤ .1 mg/L | 28% |
| June 2026 | Chromium, hexavalent [as Cr], daily maximum | .663 mg/L | ≤ .3 mg/L | 121% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | monthly minimum | ≥ 7.5 SU | all year | 001 |
| pH | monthly maximum | ≤ 10 SU | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 15 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 001 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | semi-annual average | report only (mg/L) | Jan, Jul | 001 |
| Nitrogen, total [as N] | semi-annual maximum | report only (mg/L) | Jan, Jul | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | semi-annual average | report only (mg/L) | Jan, Jul | 001 |
| Phosphorus, total [as P] | semi-annual maximum | report only (mg/L) | Jan, Jul | 001 |
| Cyanide, total [as CN] | daily maximum | report only (ug/L) | all year | 001 |
| Cyanide, free [amenable to chlorination] | daily maximum | report only (ug/L) | all year | 001 |
| Fluoride, total [as F] | daily maximum | report only (mg/L) | all year | 001 |
| Arsenic, total [as As] | 30-day average | report only (mg/L) | all year | 001 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | 001 |
| Barium, total [as Ba] | daily maximum | report only (mg/L) | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | 001 |
| Chromium, hexavalent [as Cr] | 30-day average | report only (mg/L) | all year | 001 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | 001 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | 30-day average | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, total [as Fe] | 30-day average | ≤ 2 mg/L | all year | 001 |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | all year | 001 |
| Iron, dissolved [as Fe] | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total [as Pb] | 30-day average | report only (mg/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 001 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, total [as Ni] | 30-day average | report only (mg/L) | all year | 001 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | 001 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | 30-day average | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 001 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 001 |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 001 |
| pH | monthly minimum | ≥ 7.5 SU | all year | A01 |
| pH | monthly maximum | ≤ 10 SU | all year | A01 |
| Solids, total suspended | 30-day average | ≤ 15 mg/L | all year | A01 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | A01 |
| Solids, total suspended | 30-day average | ≤ 5.8 lb/d | all year | A01 |
| Solids, total suspended | daily maximum | ≤ 12 lb/d | all year | A01 |
| Oil & Grease | 30-day average | ≤ 15 mg/L | all year | A01 |
| Oil & Grease | daily maximum | ≤ 30 mg/L | all year | A01 |
| Oil & Grease | 30-day average | ≤ 3.7 lb/d | all year | A01 |
| Oil & Grease | daily maximum | ≤ 6.5 lb/d | all year | A01 |
| Cyanide, total [as CN] | 30-day average | ≤ .1 mg/L | all year | A01 |
| Cyanide, total [as CN] | daily maximum | ≤ .2 mg/L | all year | A01 |
| Cyanide, total [as CN] | 30-day average | ≤ .026 lb/d | all year | A01 |
| Cyanide, total [as CN] | daily maximum | ≤ .054 lb/d | all year | A01 |
| Arsenic, total [as As] | 30-day average | ≤ .25 mg/L | all year | A01 |
| Arsenic, total [as As] | daily maximum | ≤ .5 mg/L | all year | A01 |
| Arsenic, total [as As] | 30-day average | ≤ .12 lb/d | all year | A01 |
| Arsenic, total [as As] | daily maximum | ≤ .25 lb/d | all year | A01 |
| Cadmium, total [as Cd] | 30-day average | ≤ .15 mg/L | all year | A01 |
| Cadmium, total [as Cd] | daily maximum | ≤ .3 mg/L | all year | A01 |
| Cadmium, total [as Cd] | 30-day average | ≤ .0056 lb/d | all year | A01 |
| Cadmium, total [as Cd] | daily maximum | ≤ .015 lb/d | all year | A01 |
| Chromium, hexavalent [as Cr] | 30-day average | ≤ .1 mg/L | all year | A01 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ .3 mg/L | all year | A01 |
| Chromium, hexavalent [as Cr] | 30-day average | ≤ .046 lb/d | all year | A01 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ .14 lb/d | all year | A01 |
| Chromium, total [as Cr] | 30-day average | ≤ 1 mg/L | all year | A01 |
| Chromium, total [as Cr] | daily maximum | ≤ 2 mg/L | all year | A01 |
| Chromium, total [as Cr] | 30-day average | ≤ .053 lb/d | all year | A01 |
| Chromium, total [as Cr] | daily maximum | ≤ .1 lb/d | all year | A01 |
| Copper, total [as Cu] | 30-day average | ≤ .5 mg/L | all year | A01 |
| Copper, total [as Cu] | daily maximum | ≤ 1 mg/L | all year | A01 |
| Copper, total [as Cu] | 30-day average | ≤ .076 lb/d | all year | A01 |
| Copper, total [as Cu] | daily maximum | ≤ .13 lb/d | all year | A01 |
| Iron, total [as Fe] | 30-day average | ≤ 2 mg/L | all year | A01 |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | all year | A01 |
| Iron, total [as Fe] | 30-day average | ≤ .044 lb/d | all year | A01 |
| Iron, total [as Fe] | daily maximum | ≤ .088 lb/d | all year | A01 |
| Lead, total [as Pb] | 30-day average | ≤ .2 mg/L | all year | A01 |
| Lead, total [as Pb] | daily maximum | ≤ .4 mg/L | all year | A01 |
| Lead, total [as Pb] | 30-day average | ≤ .0093 lb/d | all year | A01 |
| Lead, total [as Pb] | daily maximum | ≤ .015 lb/d | all year | A01 |
| Nickel, total [as Ni] | 30-day average | ≤ 1 mg/L | all year | A01 |
| Nickel, total [as Ni] | daily maximum | ≤ 2 mg/L | all year | A01 |
| Nickel, total [as Ni] | 30-day average | ≤ .052 lb/d | all year | A01 |
| Nickel, total [as Ni] | daily maximum | ≤ .086 lb/d | all year | A01 |
| Silver, total [as Ag] | 30-day average | ≤ .1 mg/L | all year | A01 |
| Silver, total [as Ag] | daily maximum | ≤ .2 mg/L | all year | A01 |
| Silver, total [as Ag] | 30-day average | ≤ .0052 lb/d | all year | A01 |
| Silver, total [as Ag] | daily maximum | ≤ .0093 lb/d | all year | A01 |
| Zinc, total [as Zn] | 30-day average | ≤ 1 mg/L | all year | A01 |
| Zinc, total [as Zn] | daily maximum | ≤ 2 mg/L | all year | A01 |
| Zinc, total [as Zn] | 30-day average | ≤ .089 lb/d | all year | A01 |
| Zinc, total [as Zn] | daily maximum | ≤ .19 lb/d | all year | A01 |
| Aluminum, total [as Al] | 30-day average | ≤ .089 lb/d | all year | A01 |
| Aluminum, total [as Al] | daily maximum | ≤ .22 lb/d | all year | A01 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | A01 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | A01 |
| Total toxic organics [TTO] [40 CFR433] | daily maximum | ≤ 2.13 mg/L | Jan, Apr, Jul, Oct | A01 |
| Total toxic organics [TTO] [40 CFR433] | daily maximum | ≤ .046 lb/d | Jan, Apr, Jul, Oct | A01 |
Cited limits by parameter: Illinois's rules and the federal ones.
Same industry: the 8 Fabricated Metal Products permits in Illinois.
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Your permit document is the final word. As JSON: /api/v1/permits/IL0001724 · MCP: https://passage-data.com/mcp