Velarion Records
Follow this permit Velarion Records emails you this permit’s record, cited to the public filing, and tells you when the register changes it. Free.
We’ll email you a link to confirm. The continuous daily watch on every change is the paid alert. Unsubscribe any time.
Also free: The Pay Desk, the weekly executive pay briefing.

Clean Water Act discharge permit · NPDES IN0030236

SPRING MILL STATE PARK WWTP, Mitchell, IN: NPDES IN0030236 discharge permit, effluent exceedances, inspections, penalties

SPRING MILL STATE PARK WWTP, held by SPRING MILL STATE PARK, holds NPDES permit IN0030236, which discharges to E Fk White R Via Mill Creek. EPA’s file records it issued August 31, 2017 and expiring December 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 filedSPRING MILL STATE PARK WWTP
Permittee as filedSPRING MILL STATE PARK
NPDES IDIN0030236
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramPublicly owned treatment works
IssuedAugust 31, 2017
Expiration dateDecember 31, 2022
Issuing agencyIDEM
AddressMitchell, IN 47446
Receiving waterE FK WHITE R VIA MILL CREEK
SubwatershedMosquito Creek-Mill Creek (HUC 051202080303)
SIC4952 – Sewerage Systems

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

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Nitrogen, ammonia total [as N]16877January 31, 2025191% over the limit
Oxygen, dissolved [DO]4265September 30, 200244% over the limit
Solids, total suspended8844December 31, 200217% over the limit
E. coli, colony forming units [CFU]3343October 31, 200726,794% over the limit
Chlorine, total residual011June 30, 199960% over the limit
BOD, carbonaceous [5 day, 20 C]8840
pH4400
Flow, in conduit or thru treatment plant1400
Flow, total1190
Number of Events210

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES IN0030236.

Inspections

EPA’s inspection file holds no inspection for NPDES IN0030236.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES IN0030236.

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, IN0030236.

Start the watch

How often?
  • 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 IN0030236 there.

SPRING MILL STATE PARK WWTP, Mitchell, Indiana: Individual permit IN0030236, held by SPRING MILL STATE PARK; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued August 31, 2017, term to December 31, 2022, by IDEM; discharges to E FK WHITE R VIA MILL CREEK.

  • Nitrogen, ammonia total [as N]: 16 limits, 87 violations of any kind, 7 effluent exceedances, latest January 31, 2025, largest 191% over the limit.
  • Oxygen, dissolved [DO]: 4 limits, 26 violations of any kind, 5 effluent exceedances, latest September 30, 2002, largest 44% over the limit.
  • Solids, total suspended: 8 limits, 84 violations of any kind, 4 effluent exceedances, latest December 31, 2002, largest 17% over the limit.
  • E. coli, colony forming units [CFU]: 3 limits, 34 violations of any kind, 3 effluent exceedances, latest October 31, 2007, largest 26,794% over the limit.
  • Chlorine, total residual: 0 limits, 1 violation of any kind, 1 effluent exceedance, latest June 30, 1999, largest 60% over the limit.
  • BOD, carbonaceous [5 day, 20 C]: 8 limits, 84 violations of any kind, 0 effluent exceedances.
  • pH: 4 limits, 40 violations of any kind, 0 effluent exceedances.
  • Flow, in conduit or thru treatment plant: 1 limit, 40 violations of any kind, 0 effluent exceedances.
  • Flow, total: 1 limit, 19 violations of any kind, 0 effluent exceedances.
  • Number of Events: 2 limits, 1 violation of any kind, 0 effluent exceedances.

Indiana holds 541 Publicly owned treatment works coverages of this permit type in EPA’s file; 120 were issued before IN0030236.

Coverages issued nearest IN0030236

SPRING MILL STATE PARK WWTP among its neighbors

EPA’s permit file holds 1 discharge permits in the Mosquito Creek-Mill Creek subwatershed (HUC 051202080303), IN0030236 among them. Its county holds 49, 2 of them major permits; IN0030236 is a minor permit.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

This public-records page covers the Clean Water Act NPDES discharge permit IN0030236 for the Spring Mill State Park WWTP in Mitchell, IN, held by Spring Mill State Park, which discharges to E Fk White R via Mill Creek. The permit is listed as administratively continued, with 9 pollutants under a numeric limit and 5 pollutants with an effluent exceedance. The page also records the Minor Discharger class, the Subwatershed Mosquito Creek-Mill Creek (HUC 051202080303), and the permit's issue and expiration dates.