NPDES INP000664 · Clean Water Act
L & W ENGINEERING INC, Middlebury, IN: NPDES INP000664 discharge permit, effluent exceedances, inspections, penalties
L & W ENGINEERING INC, Middlebury, Indiana: Individual industrial user permit INP000664, held by L & W ENGINEERING; Administratively continued; issued July 29, 2016, term to July 31, 2021, by IDEM; discharges to MIDDLEBURY POTW.
- pH: 2 limits, 32 violations of any kind, 20 effluent exceedances, latest January 31, 2026.
- Oil and grease, hexane extr method: 1 limit, 13 violations of any kind, 9 effluent exceedances, latest August 31, 2021, largest 560% over the limit.
- Zinc, total recoverable: 2 limits, 13 violations of any kind, 5 effluent exceedances, latest February 28, 2022, largest 185% over the limit.
- Solids, total suspended: 1 limit, 9 violations of any kind, 5 effluent exceedances, latest August 31, 2021, largest 875% over the limit.
- Cyanide, total [as CN]: 2 limits, 10 violations of any kind, 2 effluent exceedances, latest November 30, 2016, largest 150% over the limit.
- BOD, 5-day, 20 deg. C: 1 limit, 6 violations of any kind, 2 effluent exceedances, latest December 31, 2017, largest 14% over the limit.
- Copper, total recoverable: 2 limits, 9 violations of any kind, 1 effluent exceedance, latest August 31, 2021, largest 7% over the limit.
- Nickel, total recoverable: 2 limits, 10 violations of any kind.
- Silver total recoverable: 2 limits, 9 violations of any kind.
- Flow, in conduit or thru treatment plant: 2 limits, 9 violations of any kind.
- Cadmium, total recoverable: 2 limits, 8 violations of any kind.
- Lead, total recoverable: 2 limits, 8 violations of any kind.
- Chromium, total recoverable: 2 limits, 8 violations of any kind.
- Organics, total toxic [TTO]: 2 limits, 2 violations of any kind.
- March 17, 2026: Management Practice Violations - Improper Operation and Maintenance (ST6).
- March 17, 2026: Reporting Violations - Improper/ Incorrect Reporting (ST6).
- March 17, 2026: Effluent Violations - Numeric effluent violation (ST6).
- March 17, 2026: Evaluation (IU) (S).
- March 17, 2026: Notice of Noncompliance Issued (State).
L & W ENGINEERING INC among its neighbors
Its county: 144, 4 major; INP000664 is minor permit.
Other permits in the county
- 7-ELEVEN, INC. STORE # 32580, Middlebury: ING080172, minor, term to 2007-10-31
- ADORN 140, DIVISION OF PATRICK INDUSTRIES, Elkhart: INRM01382, minor, term to 2025-11-27
- ALLIANCE RV, Elkhart: INRM03114, minor, term to 2028-09-13
- ALLIANCE RV DBA MIDWEST AUTOMOTIVE DESIGNS, Elkhart: INRM03272, minor, term to 2031-05-12
- ALLIANCE RV LLC, Elkhart: INRM03039, minor, term to 2029-02-26
- ALLIANCE SHEETS, LLC, Bristol: INP000754, minor, term to 2031-05-31
- ALUMINUM INSIGHTS LLC, Syracuse: INRM02898, minor, term to 2027-10-16
- AMAX MOBILITY LLC, Nappanee: INRM03139, minor, term to 2030-01-05
- AMAZON.COM SERVICES LLC - DII5, Elkhart: INRM03203, minor, term to 2030-06-16
- AMERICAN CARGO GROUP TRAILERS LLC BRISTOL DIVISION, Bristol: INRM02969, minor, term to 2028-06-26
Identity
| Facility | L & W ENGINEERING INC |
|---|---|
| Permittee | L & W ENGINEERING |
| NPDES ID | INP000664 |
| Status | Administratively continued |
| Type | Individual industrial user permit |
| Class | Minor |
| Facility type | Non-POTW |
| Issued | July 29, 2016 |
| Expires | July 31, 2021 |
| Agency | IDEM |
| Address | Middlebury, IN 46540 |
| Receiving water | MIDDLEBURY POTW |
| Receiving water impaired | 303(D) Listed |
| Other EPA IDs (FRS) | RCRA handler IND040261893 |
NPDES INP000664: effluent limits and exceedances
L & W ENGINEERING INC (NPDES INP000664): 14 pollutants on file, 14 limited; 14 with a violation of any kind, 7 with an exceedance.
| Pollutant | Limits | Violations | Exceedances | Latest | Largest, as filed |
|---|---|---|---|---|---|
| pH | 2 | 32 | 20 | January 31, 2026 | |
| Oil and grease, hexane extr method | 1 | 13 | 9 | August 31, 2021 | 560% over the limit |
| Zinc, total recoverable | 2 | 13 | 5 | February 28, 2022 | 185% over the limit |
| Solids, total suspended | 1 | 9 | 5 | August 31, 2021 | 875% over the limit |
| Cyanide, total [as CN] | 2 | 10 | 2 | November 30, 2016 | 150% over the limit |
| BOD, 5-day, 20 deg. C | 1 | 6 | 2 | December 31, 2017 | 14% over the limit |
| Copper, total recoverable | 2 | 9 | 1 | August 31, 2021 | 7% over the limit |
| Nickel, total recoverable | 2 | 10 | 0 | ||
| Silver total recoverable | 2 | 9 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 9 | 0 | ||
| Cadmium, total recoverable | 2 | 8 | 0 | ||
| Lead, total recoverable | 2 | 8 | 0 | ||
| Chromium, total recoverable | 2 | 8 | 0 | ||
| Organics, total toxic [TTO] | 2 | 2 | 0 |
NPDES INP000664: inspections, violations and enforcement
NPDES INP000664: 3 single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 17, 2026 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| March 17, 2026 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 17, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
NPDES INP000664: 1 inspection
| Date | What EPA recorded | Agency |
|---|---|---|
| March 17, 2026 | Evaluation (IU) | S |
NPDES INP000664: 1 informal enforcement action
| Date | What EPA recorded | Agency |
|---|---|---|
| March 17, 2026 | Notice of Noncompliance Issued | State |
NPDES INP000664 (L & W ENGINEERING INC): no formal enforcement action on file.
Watch NPDES INP000664
NPDES INP000664: one email when its EPA record changes — $99/month.
Permits near NPDES INP000664
NPDES INP000664: 14 pollutant rows, 5 dated events; ICIS-NPDES download, loaded September 15, 2026.