Clean Water Act discharge permit · NPDES TX0117731

RANCHO VIEJO REVERSE OSMOSIS WTP, Cameron County, TX: NPDES TX0117731 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
3Pollutants under a numeric limit
3Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

RANCHO VIEJO REVERSE OSMOSIS WTP, held by VALLEY MUD 2, holds NPDES permit TX0117731, which discharges to 8 Inch Pipe To San Martin Drainage. EPA’s file records it issued May 16, 2013 and expiring July 1, 2015.

RANCHO VIEJO REVERSE OSMOSIS WTP, Cameron County, Texas: Individual permit TX0117731, held by VALLEY MUD 2; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued May 16, 2013, term to July 1, 2015; discharges to 8 INCH PIPE TO SAN MARTIN DRAINAGE.

Solids, total dissolved: 2 limits, 68 violations of any kind, 10 effluent exceedances, latest March 31, 2018, largest 27% over the limit.
pH: 2 limits, 64 violations of any kind, 4 effluent exceedances, latest October 31, 2010.
Flow, in conduit or thru treatment plant: 2 limits, 57 violations of any kind, 3 effluent exceedances, latest October 31, 2011, largest 10,100% over the limit.

July 2, 2020: Permit Violations - Discharge Without a Valid Permit (ST6).

Texas holds 1,720 Publicly owned treatment works coverages of this permit type in EPA’s file; 86 were issued before TX0117731. VALLEY MUD 2 holds 2 permits in Texas.

Other permits held by VALLEY MUD 2

RANCHO VIEJO WWTF, Harlingen: TX0127833, issued October 13, 2010

Coverages issued nearest TX0117731

December 17, 2012: MCLENNAN COUNTY WCID 2 WWTP, Elm Mott, TX0053465, held by MCLENNANCOUNTY WCID 2
January 28, 2013: CITY OF BLUM WWTP, Blum, TX0024031, held by BLUM, CITY OF
February 6, 2013: CHAMPIONS MUD WWTF, Houston, TX0026450, held by CHAMPIONS MUNICIPAL UTILITY DISTRICT
February 6, 2013: KLEIN ISD WWTP, Harris County, TX0083801, held by KLEIN ISD
April 24, 2013: ARTHUR BAYER PARK WWTP, Houston, TX0096865, held by HARRIS COUNTY
August 27, 2013: THE WOODLANDS WWTP 2, Woodland Lake, TX0091715, held by SAN JACINTO RIVER AUTHORITY
September 20, 2013: GUNTER CREEK WWTF, Gunter, TX0027227, held by GUNTER, CITY OF
September 20, 2013: THE WOODLANDS WWTP 3, Woodland Lake, TX0063461, held by SAN JACINTO RIVER AUTHORITY
November 15, 2013: WEST WISE SURFACE WTP, Bridgeport, TX0133019, held by WEST WISE SUD
December 10, 2013: SAN JACINTO RIVER AUTHORITY WWTP 2, Conroe, TX0054186, held by SJRA (WOODLANDS SUBDIVISION)

RANCHO VIEJO REVERSE OSMOSIS WTP among its neighbors

EPA’s permit file holds 199 discharge permits in the Bahia Grande-Brownsville Ship Channel subwatershed (HUC 121102080900), TX0117731 among them. Its county holds 327, 11 of them major permits; TX0117731 is a minor permit.

Other permits in the Bahia Grande-Brownsville Ship Channel subwatershed (HUC 121102080900)

16300 RL OSTOS ROAD, Brownsville: TXR1541NT, minor permit, discharging to LAGUNA MADRE, permit term to March 4, 2028
2022 CITY OF BROWNSVILLE STREET IMPROVEMENTS, Brownsville: TXR1576MK, minor permit, discharging to 2494B, permit term to March 4, 2028
57 SPACE CONCRETE, Brownsville: TXR1579UH, minor permit, discharging to BROWNSVILLE SHIP CHANNEL, permit term to March 4, 2028
7- ELEVEN BROWNSVILLE SUBDIVISION, Brownsville: TXR1533MG, minor permit, discharging to SAN MARTIN LAKES, permit term to March 4, 2028
ALAMO CONCRETE PRODUCTS PLANT 85, Brownsville: TXG110941, minor permit, discharging to BROWNSVILLE SHIP CHANNEL, permit term to November 7, 2021
ALEXIS M HERNANDEZ MARTINEZ, Brownsville: TXRNECC86, minor permit, permit term to August 13, 2026
ALL STAR METALS LLC, Brownsville: TXR05FA0M, minor permit, permit term to February 28, 2026
AMAZONCOM SERVICES LLC - WBV1, Brownsville: TXR05GY97, minor permit, permit term to August 13, 2026
ARCEN SUBDIVISION, Browsville: TXR1578VV, minor permit, discharging to RESACA, permit term to March 4, 2028
ARX ENERGY BROWNSVILLE, Brownville: TXR1568RB, minor permit, discharging to BROWNSVILLE SHIP CHANNEL, permit term to March 4, 2028

Identity

Facility as filed	RANCHO VIEJO REVERSE OSMOSIS WTP
Permittee as filed	VALLEY MUD 2
NPDES ID	TX0117731
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
Program	Publicly owned treatment works
Issued	May 16, 2013
Expiration date	July 1, 2015
Address	Cameron County, TX 78575
Receiving water	8 INCH PIPE TO SAN MARTIN DRAINAGE
Subwatershed	Bahia Grande-Brownsville Ship Channel (HUC 121102080900)

Effluent limits and exceedances

3Pollutants on file
3Under a numeric limit
3With 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
Solids, total dissolved	2	68	10	March 31, 2018	27% over the limit
pH	2	64	4	October 31, 2010
Flow, in conduit or thru treatment plant	2	57	3	October 31, 2011	10,100% over the limit

Inspections, violations and enforcement

1Single-event violations

Date	What EPA recorded	Agency
July 2, 2020	Permit Violations - Discharge Without a Valid Permit	ST6

Inspections

EPA’s inspection file holds no inspection for NPDES TX0117731.

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 TX0117731.

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, TX0117731.

Start the watch

How we handle your data → Privacy

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 TX0117731 for the RANCHO VIEJO REVERSE OSMOSIS WTP in Cameron County, TX, held by VALLEY MUD 2, which is administratively continued and classed as a minor discharger. The page lists 3 pollutants under a numeric limit and 3 pollutants with an effluent exceedance, with the permit issued May 16, 2013 and expiring July 1, 2015.