GRANITE FALLS STP, Granite Falls, WA: NPDES WA0021130 discharge permit, effluent exceedances, inspections, penalties

GRANITE FALLS STP, Granite Falls, Washington: Individual permit WA0021130, held by City Of Granite Falls; Publicly owned treatment works; Effective; issued June 30, 2020, term to July 31, 2025, by State.

• Solids, total suspended: 0 limits, 374 violations of any kind, 6 effluent exceedances, latest January 31, 2026, largest 33% over the limit.
• Solids, suspended percent removal: 0 limits, 39 violations of any kind, 2 effluent exceedances, latest January 31, 2026, largest 27% over the limit.
• BOD, 5-day, 20 deg. C: 0 limits, 368 violations of any kind.
• pH: 0 limits, 113 violations of any kind.
• Coliform, fecal general: 0 limits, 113 violations of any kind.
• Flow: 0 limits, 113 violations of any kind.
• Temperature, water deg. centigrade: 0 limits, 37 violations of any kind.
• Hardness, total [as CaCO3]: 0 limits, 37 violations of any kind.
• BOD, percent removal [total]: 0 limits, 37 violations of any kind.
• Oxygen, dissolved [DO]: 0 limits, 8 violations of any kind.
• Oil and grease, hexane extr method: 0 limits, 8 violations of any kind.
• Solids, total dissolved: 0 limits, 8 violations of any kind.
• Nitrogen, ammonia total [as N]: 0 limits, 3 violations of any kind.
• Nitrogen, Kjeldahl, total [as N]: 0 limits, 3 violations of any kind.
• Nitrite + Nitrate total [as N]: 0 limits, 3 violations of any kind.
• Phosphorus, total [as P]: 0 limits, 3 violations of any kind.
• Phosphorus, dissolved reactive [drp as P]: 0 limits, 3 violations of any kind.
• Copper, total [as Cu]: 0 limits, 3 violations of any kind.
• Zinc, total [as Zn]: 0 limits, 3 violations of any kind.

• October 8, 2026: Evaluation (S).
• April 21, 2026: Evaluation (S).

Washington holds 238 Publicly owned treatment works coverages of this permit type in EPA’s file; 224 were issued before WA0021130.

Coverages issued nearest WA0021130

• 2019-08-22: CLE ELUM POTW, Cle Elum: WA0021938, held by City of Cle Elum
• 2019-09-25: ARLINGTON STP, Arlington: WA0022560, held by ARLINGTON CITY
• 2019-10-15: COWLITZ INDIAN TRIBAL HOUSING WASTEWATER TREATMENT PLANT, Toledo: WA0040258, held by Cowlitz Tribal Member Services-
• 2020-01-13: ROCK ISLAND POTW, Rock Island: WA0501487, held by City of Rock Island
• 2020-04-15: CASHMERE POTW, Cashmere: WA0023183, held by City of Cashmere
• 2020-08-21: OTHELLO STP, Othello: WA0022357, held by City of Othello
• 2021-01-29: BIRCH BAY WWTP, Blaine: WA0029556, held by Birch Bay Water & Sewer Dist
• 2021-01-29: SKAGIT COUNTY SEWER DIST 2 BIG LAKE WWTP, Mount Vernon: WA0030597, held by Skagit County Sewer District No. 2
• 2021-02-11: SUMNER STP, Sumner: WA0023353, held by City of Sumner
• 2021-02-19: THREE RIVERS REGIONAL WASTEWATER PLANT, Longview: WA0037788, held by Three Rivers Regional Wastewater Authority

GRANITE FALLS STP among its neighbors

9 discharge permits are in the Upper Pilchuc River subwatershed (HUC 171100110101); WA0021130 is one. Its county: 619, 4 major; WA0021130 is minor permit.

Other permits in the Upper Pilchuc River subwatershed (HUC 171100110101)

• CITY OF GRANITE FALLS WASTEWATER TREATMENT FACILITY, Granite Falls: WAR312994, minor, term to 2025-12-31
• CITY OF GRANITE FALLS WASTEWATER TREATMENT PLANT, Granite Falls: WAR315826, minor, term to 2029-12-31
• GRANITE FALLS CITY, Granite Falls: WAR045517, minor, term to 2024-07-31
• GRANITE FALLS QUARRY, Granite Falls: WAG503085, minor, term to 2026-03-31
• GRANITE FALLS QUARRY, Granite Falls: WAG503327, minor, term to 2026-03-31
• GRANITE FALLS STP, Granite Falls: WAL021130, minor, term to 2025-12-31
• LAKE INDUSTRIES MENZEL LAKE GRAVEL, Granite Falls: WAG503312, minor, term to 2026-03-31
• SCOTTY PIT, Granite Falls: WAG994258, minor, term to 2026-03-31