Clean Water Act discharge permit · NPDES TX0053830
SILVER LAKE WWTP, Del Rio, TX: NPDES TX0053830 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 47Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
SILVER LAKE WWTP, held by DEL RIO, CITY OF, holds NPDES permit TX0053830, which discharges to Rio Grande Below Amistad Reservoir. EPA’s file records it issued September 28, 2015 and expiring September 1, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SILVER LAKE WWTP |
|---|---|
| Permittee as filed | DEL RIO, CITY OF |
| NPDES ID | TX0053830 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | September 28, 2015 |
| Expiration date | September 1, 2020 |
| Address | Del Rio, TX 78840 |
| Receiving water | RIO GRANDE BELOW AMISTAD RESERVOIR |
| Subwatershed | San Felipe Creek-Rio Grande (HUC 130800010104) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 47Pollutants on file
- 47Under a numeric limit
- 44With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| E. coli | 2 | 15 | 9 | November 30, 2013 | 514% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 15 | 4 | June 30, 2019 | 36% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 14 | 4 | April 30, 2011 | 99,999% over the limit |
| Solids, total suspended | 3 | 11 | 2 | September 30, 2015 | 29% over the limit |
| Chlorine, total residual | 2 | 8 | 2 | November 30, 2003 | 100% over the limit |
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 2 | 38 | 0 | ||
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 2 | 38 | 0 | ||
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 2 | 34 | 0 | ||
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 2 | 34 | 0 | ||
| LOAEC Lethal Static Renewal 48HR Acute Daphnia pulex | 2 | 29 | 0 | ||
| LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelas | 2 | 25 | 0 | ||
| Arsenic, dry weight | 5 | 10 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 10 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 7 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 7 | 0 | ||
| pH | 3 | 6 | 0 | ||
| Selenium, dry weight | 3 | 6 | 0 | ||
| Copper, dry weight | 3 | 6 | 0 | ||
| Cadmium, dry weight | 3 | 6 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 6 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 6 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 6 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 6 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 6 | 0 | ||
| Nickel, total [as Ni] | 2 | 4 | 0 | ||
| Level of pathogen requirements achieved | 2 | 4 | 0 | ||
| Description of pathogen option used | 2 | 4 | 0 | ||
| Vector attraction reduction alternative used | 2 | 4 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 4 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 4 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 4 | 0 | ||
| Annual amt of sludge incinerated | 1 | 4 | 0 | ||
| Annual sludge production, total | 1 | 4 | 0 | ||
| Annual amount of sludge land applied | 1 | 4 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 4 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 4 | 0 | ||
| Annual amt sludge transported interstate | 1 | 4 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 4 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 2 | 0 | ||
| Fecal coliform | 1 | 2 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 2 | 0 | ||
| Boundary areas | 1 | 2 | 0 | ||
| Salmonella | 1 | 2 | 0 | ||
| Pollutant table from 503.13 | 1 | 2 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 0 | 0 | ||
| Annual whole sludge application rate | 1 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 27, 2018 | Permit Violations - Violation Specified in Comment | 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
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, TX0053830.
Start the watch
- 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 TX0053830 there.
Nearby on the register
- Discharge permits in Del Rio
- Every permit record in Del Rio, A to Z
- Discharge permits in Texas
- Every permit record in Texas, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.