Clean Water Act discharge permit · NPDES IL0074101
OTTAWA MAIN WTP, Ottawa, IL: NPDES IL0074101 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
OTTAWA MAIN WTP, held by OTTAWA, CITY OF, holds NPDES permit IL0074101, which discharges to Fox River. EPA’s file records it issued January 11, 2019 and expiring January 31, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | OTTAWA MAIN WTP |
|---|---|
| Permittee as filed | OTTAWA, CITY OF |
| NPDES ID | IL0074101 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | January 11, 2019 |
| Expiration date | January 31, 2024 |
| Address | Ottawa, IL 61350 |
| Receiving water | FOX RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Goose Creek-Fox River (HUC 071200070609) |
| SIC | 4941 – Water Supply |
| Other EPA IDs (FRS) | RCRA handler ILR000110346 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 10Pollutants on file
- 7Under a numeric limit
- 10With a violation of any kind
- 3With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Chloride [as Cl] | 1 | 70 | 19 | December 31, 2021 | 294% over the limit |
| Solids, total suspended | 2 | 170 | 4 | April 30, 2016 | 227% over the limit |
| pH | 2 | 165 | 1 | March 31, 2016 | |
| Flow, in conduit or thru treatment plant | 2 | 184 | 0 | ||
| Radium 226 + radium 228, total | 0 | 40 | 0 | ||
| Radium 226, dissolved | 0 | 38 | 0 | ||
| Fluoride, total [as F] | 1 | 31 | 0 | ||
| Solids, total dissolved- 180 deg. C | 0 | 30 | 0 | ||
| Radium 226, total | 1 | 11 | 0 | ||
| Radium 228, total | 1 | 11 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES IL0074101.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, IL0074101.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID IL0074101 there.
Nearby on the register
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- Every permit record in Ottawa, A to Z
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- Every permit record in Illinois, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.