Clean Water Act discharge permit · NPDES MO0113271
RAINBOW ACRES SUBDIVISION WWTF, Knob Noster, MO: NPDES MO0113271 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
RAINBOW ACRES SUBDIVISION WWTF, held by Elm Hills Utility Operating Company, Inc, holds NPDES permit MO0113271, which discharges to Tributary To Walnut Cr.. EPA’s file records it issued November 14, 2017 and expiring March 31, 2022. 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 | RAINBOW ACRES SUBDIVISION WWTF |
|---|---|
| Permittee as filed | Elm Hills Utility Operating Company, Inc |
| NPDES ID | MO0113271 |
| 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 | November 14, 2017 |
| Expiration date | March 31, 2022 |
| Address | Knob Noster, MO 65336 |
| Receiving water | Tributary to Walnut Cr. |
| Subwatershed | Walnut Creek (HUC 103001040305) |
| SIC | 6552 – Subdividers And Developers |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 5With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 4 | 13 | 11 | September 30, 2019 | 586% over the limit |
| Solids, total suspended | 2 | 7 | 5 | March 31, 2026 | 143% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 4 | 2 | March 31, 2026 | 23% over the limit |
| pH | 2 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 2 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 0 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 0 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| E. coli | 2 | 0 | 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
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 15, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
| October 15, 2018 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| October 15, 2018 | Effluent Violations - Narrative Effluent Violation | ST6 |
| October 15, 2018 | WW SSO - Failure to report violation that may endanger public health 122.41(l)(7) | ST6 |
| December 29, 2017 | Effluent Violations - Numeric effluent violation | ST6 |
| March 24, 2017 | Effluent Violations - Numeric effluent violation | ST6 |
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
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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 MO0113271 there.
Nearby on the register
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- Every permit record in Knob Noster, A to Z
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- Every permit record in Missouri, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.