Clean Water Act discharge permit · NPDES AR0021512

MOUNTAINBURG, CITY OF - WWTP, Mountainburg, AR: NPDES AR0021512 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
11Pollutants under a numeric limit
7Pollutants with an effluent exceedance

MOUNTAINBURG, CITY OF - WWTP, held by MOUNTAINBURG, CITY OF, holds NPDES permit AR0021512, which discharges to Trib,Pigeon Cr,Frog Bu,Arkansas R. EPA’s file records it issued December 12, 2014 and expiring December 31, 2019. 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	MOUNTAINBURG, CITY OF - WWTP
Permittee as filed	MOUNTAINBURG, CITY OF
NPDES ID	AR0021512
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	December 12, 2014
Expiration date	December 31, 2019
Address	Mountainburg, AR 72946
Receiving water	TRIB,PIGEON CR,FROG BU,ARKANSAS R
Subwatershed	Hurricane Creek-Frog Bayou (HUC 111102010501)

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
7With 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]	6	259	253	June 30, 2026	1,240% over the limit
Solids, total suspended	3	128	113	June 30, 2026	265% over the limit
pH	2	31	21	November 30, 2013
BOD, 5-day, 20 deg. C	3	23	20	March 31, 2026	133% over the limit
Oxygen, dissolved [DO]	1	23	20	February 28, 2026	48% over the limit
BOD, carbonaceous [5 day, 20 C]	3	24	12	May 31, 2026	99,999% over the limit
Coliform, fecal general	2	17	5	June 30, 2026	19,900% over the limit
Flow, in conduit or thru treatment plant	2	10	0
Chlorine, total residual	1	7	0
Overflows	1	3	0
Overflow volume [SS0 volume, CSO volume]	1	3	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 AR0021512.

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, AR0021512.

Start the watch

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 AR0021512 there.

Nearby on the register

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

This public-records page covers the Clean Water Act discharge permit NPDES AR0021512, held by MOUNTAINBURG, CITY OF for its WWTP in Mountainburg, AR, with a status of administratively continued and a minor discharger class. The facts list 11 pollutants under a numeric limit and 7 pollutants with an effluent exceedance, and the permit is cited with a receiving water of TRIB, PIGEON CR, FROG BU, ARKANSAS R.