NPDES TX0086118 · Clean Water Act
SILVERLAKE WWTP, Pearland, TX: NPDES TX0086118 discharge permit, effluent exceedances, inspections, penalties
SILVERLAKE WWTP, Pearland, Texas: Individual permit TX0086118, held by BRAZORIA COUNTY MUD 3; Publicly owned treatment works; Administratively continued; issued September 27, 2018, term to September 27, 2023; discharges to DRAINAGE DITCH;N FORK MARYS CREEK; MARYS CREEK.
35 of the 56 pollutants listed for NPDES TX0086118 have no violation or effluent exceedance.
- Nitrogen, ammonia total [as N]: 3 limits, 20 violations of any kind, 11 effluent exceedances, latest December 31, 2025, largest 454% over the limit.
- BOD, carbonaceous [5 day, 20 C]: 3 limits, 13 violations of any kind, 7 effluent exceedances, latest November 30, 2025, largest 224% over the limit.
- Solids, total suspended: 3 limits, 13 violations of any kind, 4 effluent exceedances, latest July 31, 2024, largest 113% over the limit.
- E. coli: 2 limits, 1 violation of any kind, 1 effluent exceedance, latest July 31, 2024, largest 507% over the limit.
- Flow, in conduit or thru treatment plant: 4 limits, 8 violations of any kind.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas: 4 limits, 6 violations of any kind.
- NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas: 4 limits, 6 violations of any kind.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 4 limits, 6 violations of any kind.
- Whole Effluent Toxicity [WET] - C. dubia: 8 limits, 4 violations of any kind.
- pH: 3 limits, 4 violations of any kind.
- Chlorine, total residual: 2 limits, 4 violations of any kind.
- Whole effluent toxicity - retest #1: 5 limits, 2 violations of any kind.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas: 4 limits, 2 violations of any kind.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas: 4 limits, 2 violations of any kind.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 2 violations of any kind.
- NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 2 violations of any kind.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 2 violations of any kind.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 2 violations of any kind.
- Oxygen, dissolved [DO]: 1 limit, 2 violations of any kind.
- LC50 Pass/Fail Static 24Hr Acute D. Pulex: 1 limit, 2 violations of any kind.
- LC50 Pass/Fail Static 24Hr Acute Pimephales promelas: 1 limit, 2 violations of any kind.
- Whole Effluent Toxicity [WET] - P. promelas: 8 limits.
- Arsenic, dry weight: 5 limits.
- Whole effluent toxicity - retest #2: 5 limits.
- Chromium, sludge, total, dry weight [as Cr]: 5 limits.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas: 4 limits.
- Selenium, dry weight: 3 limits.
- Copper, dry weight: 3 limits.
- Cadmium, dry weight: 3 limits.
- Molybdenum, sludge, total, dry weight [as Mo]: 3 limits.
- Zinc, sludge, total, dry weight [as Zn]: 3 limits.
- Lead, sludge, total, dry weight [as Pb]: 3 limits.
- Nickel, sludge, total, dry weight [as Ni]: 3 limits.
- Mercury, sludge, total, dry weight [as Hg]: 3 limits.
- Nickel, total [as Ni]: 2 limits.
- Level of pathogen requirements achieved: 2 limits.
- Description of pathogen option used: 2 limits.
- Vector attraction reduction alternative used: 2 limits.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits.
- Fecal coliform: 1 limit.
- Polychlorinated biphenyls [PCBs]: 1 limit.
- Toxicity characteristic leaching procedure: 1 limit.
- Annual whole sludge application rate: 1 limit.
- Ann. amt sludge disposed by other method: 1 limit.
- Annual amt of sludge incinerated: 1 limit.
- Annual sludge production, total: 1 limit.
- Annual amount of sludge land applied: 1 limit.
- Annual amt. sludge disposed surface unit: 1 limit.
- Annual amt sludge disposed in landfill: 1 limit.
- Annual amt sludge transported interstate: 1 limit.
- Unit w/liner/leachate collection system: 1 limit.
- Compliance w/part 258 sludge requirement: 1 limit.
- Boundary areas: 1 limit.
- Salmonella: 1 limit.
- Pollutant table from 503.13: 1 limit.
- December 21, 2023: Permit Violations - Violation Specified in Comment (ST6).
Texas holds 1,720 Publicly owned treatment works coverages of this permit type in EPA’s file; 882 were issued before TX0086118.
Coverages issued nearest TX0086118
- 2018-09-20: RIVER PLANTATION MUD WWTF, Conroe: TX0025674, held by RIVER PLANTATION MUD
- 2018-09-20: ANGLETON WWTP, Angleton: TX0056316, held by CITY OF ANGLETON
- 2018-09-20: CHARLESTON MUD WWTP, Arcola: TX0138134, held by CHARLESTON MUD
- 2018-09-27: STILL CREEK WWTP, Bryan: TX0025071, held by BRYAN, CITY OF
- 2018-09-27: CITY OF HIDALGO WWTP, Hidalgo: TX0058386, held by HIDALGO, CITY OF
- 2018-09-27: FOREST COVE WWTP, Kingwood: TX0115924, held by CITY OF HOUSTON
- 2018-09-27: ALABAMA COUSHATTA TRIBE OF TX, Livingston: TX0127582
- 2018-10-03: CITY OF GRAPELAND WWTP, Grapeland: TX0055239, held by CITY OF GRAPELAND
- 2018-10-03: MONTGOMERY COUNTY MUD 83 WWTP, Porter: TX0126209, held by MONTGOMERY COUNTY MUD 83
- 2018-10-04: CITY OF CUSHING WWTP, Cushing: TX0053937, held by CUSHING, CITY OF
SILVERLAKE WWTP among its neighbors
560 discharge permits are in the Clear Creek-Frontal Galveston Bay subwatershed (HUC 120402040100); TX0086118 is one. Its county: 522, 24 major; TX0086118 is major permit.
Other permits in the Clear Creek-Frontal Galveston Bay subwatershed (HUC 120402040100)
- 10 PUBLIC SANITARY SEWER RELOCATION PLANS FOR EDG, Seabrook: TXR1567OE, minor, term to 2028-03-04
- 11806 PORT ROAD, Seabrook: TXR1501PX, minor, term to 2028-03-04
- 3223-01 HMCL MOB3 - ASC, Houston: TXR1557VH, minor, term to 2028-03-04
- 34 ACRES EGRET BAY MASS GRADING, League City: TXR1555QU, minor, term to 2028-03-04
- 4 HORN PROPERTIES, Pasadena: TXR1565VB, minor, term to 2028-03-04
- 42 WL FROM CLCWA WP 3 TO LEAGUE CITY BOOSTER PUMP STATION, Webster: TXR1580WY, minor, term to 2028-03-04
- 541 WATER SYSTEM, Alvin: TX0141623, minor, term to 2027-07-08
- 6951 MCHARD RD--JOJES CAPITAL, Houston: TXR1545QD, minor, term to 2028-03-04
- A SCHULMAN, La Porte: TX0111350, minor, term to 2021-08-01
- ACC HOU - MCHARD, Fresno: TXR05GQ82, minor, term to 2026-08-13
Identity
| Facility | SILVERLAKE WWTP |
|---|---|
| Permittee | BRAZORIA COUNTY MUD 3 |
| NPDES ID | TX0086118 |
| Status | Administratively continued |
| Type | Individual permit |
| Class | Major |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | September 27, 2018 |
| Expires | September 27, 2023 |
| Address | Pearland, TX 77584 |
| Receiving water | DRAINAGE DITCH;N FORK MARYS CREEK; MARYS CREEK |
| Subwatershed | Clear Creek-Frontal Galveston Bay (HUC 120402040100) |
NPDES TX0086118: effluent limits and exceedances
SILVERLAKE WWTP (NPDES TX0086118): 56 pollutants on file, 56 limited; 21 with a violation of any kind, 4 with an exceedance.
| Pollutant | Limits | Violations | Exceedances | Latest | Largest, as filed |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 3 | 20 | 11 | December 31, 2025 | 454% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 13 | 7 | November 30, 2025 | 224% over the limit |
| Solids, total suspended | 3 | 13 | 4 | July 31, 2024 | 113% over the limit |
| E. coli | 2 | 1 | 1 | July 31, 2024 | 507% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 8 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 4 | 6 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 4 | 6 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 4 | 6 | 0 | ||
| Whole Effluent Toxicity [WET] - C. dubia | 8 | 4 | 0 | ||
| pH | 3 | 4 | 0 | ||
| Chlorine, total residual | 2 | 4 | 0 | ||
| Whole effluent toxicity - retest #1 | 5 | 2 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 4 | 2 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 4 | 2 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 2 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 2 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 2 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 2 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 2 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 2 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 2 | 0 | ||
| Whole Effluent Toxicity [WET] - P. promelas | 8 | 0 | 0 | ||
| Arsenic, dry weight | 5 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 5 | 0 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 0 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 4 | 0 | 0 | ||
| Selenium, dry weight | 3 | 0 | 0 | ||
| Copper, dry weight | 3 | 0 | 0 | ||
| Cadmium, dry weight | 3 | 0 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 0 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 0 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 0 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 0 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 0 | 0 | ||
| Nickel, total [as Ni] | 2 | 0 | 0 | ||
| Level of pathogen requirements achieved | 2 | 0 | 0 | ||
| Description of pathogen option used | 2 | 0 | 0 | ||
| Vector attraction reduction alternative used | 2 | 0 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| Fecal coliform | 1 | 0 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 0 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 0 | 0 | ||
| Annual whole sludge application rate | 1 | 0 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 0 | 0 | ||
| Annual amt of sludge incinerated | 1 | 0 | 0 | ||
| Annual sludge production, total | 1 | 0 | 0 | ||
| Annual amount of sludge land applied | 1 | 0 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 0 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 0 | 0 | ||
| Annual amt sludge transported interstate | 1 | 0 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 0 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 0 | 0 | ||
| Boundary areas | 1 | 0 | 0 | ||
| Salmonella | 1 | 0 | 0 | ||
| Pollutant table from 503.13 | 1 | 0 | 0 |
NPDES TX0086118: inspections, violations and enforcement
NPDES TX0086118: 1 single-event violation
| Date | What EPA recorded | Agency |
|---|---|---|
| December 21, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
NPDES TX0086118 (SILVERLAKE WWTP): no inspection, formal enforcement action and informal enforcement action on file.
Watch NPDES TX0086118
NPDES TX0086118: one email when its EPA record changes — $99/month.
Permits near NPDES TX0086118
NPDES TX0086118: 56 pollutant rows, 1 dated events; ICIS-NPDES download, loaded September 15, 2026.