Clean Water Act discharge permit · NPDES MTX000238

SOUTH WINDS WASTEWATER TREATMENT PLANT, Great Falls, MT: NPDES MTX000238 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
11Pollutants under a numeric limit
1Pollutants with an effluent exceedance

SOUTH WINDS WASTEWATER TREATMENT PLANT, held by RON LORENZ - SOUTH WIND WATER AND SEWER DIST, holds NPDES permit MTX000238, which discharges to Upper Missouri Dearborn. EPA’s file records it issued July 21, 2017 and expiring August 31, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	SOUTH WINDS WASTEWATER TREATMENT PLANT
Permittee as filed	RON LORENZ - SOUTH WIND WATER AND SEWER DIST
NPDES ID	MTX000238
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	State-issued individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Publicly owned treatment works
Issued	July 21, 2017
Expiration date	August 31, 2022
Address	Great Falls, MT 59405
Receiving water	UPPER MISSOURI DEARBORN
Receiving water impaired	303(D) Listed
Subwatershed	Missouri River-Wilson Butte (HUC 100301020805)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

11Pollutants on file
11Under a numeric limit
11With a violation of any kind
1With 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, total [as N]	7	99	1	June 30, 2022	4% over the limit
Nitrogen, Kjeldahl, total [as N]	6	84	0
Nitrite + Nitrate total [as N]	6	84	0
BOD, 5-day, 20 deg. C	4	56	0
Nitrogen, ammonia total [as N]	4	56	0
Flow rate	2	28	0
Specific conductance	1	14	0
Phosphorus, total [as P]	1	14	0
Chloride [as Cl]	1	14	0
Solids, total dissolved	1	14	0
Water level at sample collection time	1	14	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 MTX000238.

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, MTX000238.

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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 MTX000238 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers the NPDES discharge permit MTX000238 for the South Winds Wastewater Treatment Plant in Great Falls, MT, held by Ron Lorenz of South Wind Water and Sewer Dist, which discharges to Upper Missouri Dearborn. The permit is listed as administratively continued, a Minor discharger class, with 11 pollutants under a numeric limit and 1 pollutant with an effluent exceedance. The permit was issued July 21, 2017 and expired August 31, 2022, and the dates reflect EPA's file as loaded on September 15, 2026.