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Sewage treatment plant, major discharger, Grantsville, Utah. NPDES permit UT0021130, in force until Mar 31, 2029. Last 12 months: over a limit 3 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Phosphorus, total [as P], annual maximum | 7413.95 lb/yr | ≤ 2839 lb/yr | 161% |
| April 2026 | Nitrogen, ammonia total [as N], daily maximum | 3.42 mg/L | ≤ 3.2 mg/L | 7% |
| April 2026 | Nitrogen, ammonia total [as N], maximum monthly average | 2.47 mg/L | ≤ 1.7 mg/L | 45% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 4 mg/L | all year |
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 25 mg/L | all year |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 35 mg/L | all year |
| BOD, 5-day, 20 deg. C | maximum monthly average | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | maximum weekly average | report only (mg/L) | all year |
| pH | daily minimum | ≥ 6.5 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | maximum monthly average | ≤ 25 mg/L | all year |
| Solids, total suspended | maximum weekly average | ≤ 35 mg/L | all year |
| Solids, total suspended | maximum monthly average | report only (mg/L) | all year |
| Solids, total suspended | maximum weekly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 1.7 mg/L | Apr–Jun |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 2.9 mg/L | Jan–Mar |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 2.5 mg/L | Oct–Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.2 mg/L | Apr–Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.2 mg/L | Jan–Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.2 mg/L | Jul–Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.2 mg/L | Oct–Dec |
| Nitrogen, ammonia total [as N] | monthly maximum | ≤ 412.8 lb/mo | Jul–Sep |
| Nitrogen, Kjeldahl, total [as N] | 30-day average | report only (mg/L) | all year |
| Nitrogen, Kjeldahl, total [as N] | 30-day average | report only (mg/L) | all year |
| Phosphorus, total [as P] | 30-day average | report only (mg/L) | all year |
| Phosphorus, total [as P] | annual maximum | ≤ 2839 lb/yr | all year |
| Phosphorus, total [as P] | 30-day average | report only (mg/L) | all year |
| Cyanide, total [as CN] | semi-annual average | report only (mg/L) | all year |
| Cyanide, total [as CN] | semi-annual maximum | report only (mg/L) | all year |
| Cyanide, total [as CN] | semi-annual average | report only (mg/L) | all year |
| Cyanide, total [as CN] | semi-annual maximum | report only (mg/L) | all year |
| Arsenic, total [as As] | semi-annual average | report only (mg/L) | all year |
| Arsenic, total [as As] | semi-annual maximum | report only (mg/L) | all year |
| Arsenic, total [as As] | semi-annual average | report only (mg/L) | all year |
| Arsenic, total [as As] | semi-annual maximum | report only (mg/L) | all year |
| Cadmium, total [as Cd] | semi-annual average | report only (mg/L) | all year |
| Cadmium, total [as Cd] | semi-annual maximum | report only (mg/L) | all year |
| Cadmium, total [as Cd] | semi-annual average | report only (mg/L) | all year |
| Cadmium, total [as Cd] | semi-annual maximum | report only (mg/L) | all year |
| Chromium, total [as Cr] | semi-annual average | report only (mg/L) | all year |
| Chromium, total [as Cr] | semi-annual maximum | report only (mg/L) | all year |
| Chromium, total [as Cr] | semi-annual average | report only (mg/L) | all year |
| Chromium, total [as Cr] | semi-annual maximum | report only (mg/L) | all year |
| Copper, total [as Cu] | semi-annual average | report only (mg/L) | all year |
| Copper, total [as Cu] | semi-annual maximum | report only (mg/L) | all year |
| Copper, total [as Cu] | semi-annual average | report only (mg/L) | all year |
| Copper, total [as Cu] | semi-annual maximum | report only (mg/L) | all year |
| Lead, total [as Pb] | semi-annual average | report only (mg/L) | all year |
| Lead, total [as Pb] | semi-annual maximum | report only (mg/L) | all year |
| Lead, total [as Pb] | semi-annual average | report only (mg/L) | all year |
| Lead, total [as Pb] | semi-annual maximum | report only (mg/L) | all year |
| Molybdenum, total [as Mo] | semi-annual average | report only (mg/L) | all year |
| Molybdenum, total [as Mo] | semi-annual maximum | report only (mg/L) | all year |
| Molybdenum, total [as Mo] | semi-annual average | report only (mg/L) | all year |
| Molybdenum, total [as Mo] | semi-annual maximum | report only (mg/L) | all year |
| Nickel, total [as Ni] | semi-annual average | report only (mg/L) | all year |
| Nickel, total [as Ni] | semi-annual maximum | report only (mg/L) | all year |
| Nickel, total [as Ni] | semi-annual average | report only (mg/L) | all year |
| Nickel, total [as Ni] | semi-annual maximum | report only (mg/L) | all year |
| Silver, total [as Ag] | semi-annual average | report only (mg/L) | all year |
| Silver, total [as Ag] | semi-annual maximum | report only (mg/L) | all year |
| Silver, total [as Ag] | semi-annual average | report only (mg/L) | all year |
| Silver, total [as Ag] | semi-annual maximum | report only (mg/L) | all year |
| Zinc, total [as Zn] | semi-annual average | report only (mg/L) | all year |
| Zinc, total [as Zn] | semi-annual maximum | report only (mg/L) | all year |
| Zinc, total [as Zn] | semi-annual average | report only (mg/L) | all year |
| Zinc, total [as Zn] | semi-annual maximum | report only (mg/L) | all year |
| Selenium, total [as Se] | semi-annual average | report only (mg/L) | all year |
| Selenium, total [as Se] | semi-annual maximum | report only (mg/L) | all year |
| Selenium, total [as Se] | semi-annual average | report only (mg/L) | all year |
| Selenium, total [as Se] | semi-annual maximum | report only (mg/L) | all year |
| Phosphate, ortho [as P] | 30-day average | report only (mg/L) | all year |
| Flow, in conduit or thru treatment plant | maximum monthly average | ≤ 1.5 MGD | all year |
| Flow, in conduit or thru treatment plant | maximum monthly average | report only (MGD) | all year |
| E. coli | maximum monthly average | ≤ 126 #/100mL | all year |
| E. coli | maximum weekly average | ≤ 158 #/100mL | all year |
| Solids, total dissolved | 30-day average | report only (mg/L) | all year |
| Nitrogen, nitrate total [as NO3] | 30-day average | report only (mg/L) | all year |
| Nitrogen, nitrite total [as NO2] | 30-day average | report only (mg/L) | all year |
| Mercury, total [as Hg] | semi-annual average | report only (mg/L) | all year |
| Mercury, total [as Hg] | semi-annual maximum | report only (mg/L) | all year |
| Mercury, total [as Hg] | semi-annual average | report only (mg/L) | all year |
| Mercury, total [as Hg] | semi-annual maximum | report only (mg/L) | all year |
| Organics, total toxic [TTO] | annual total | report only (mg/L) | all year |
| Organics, total toxic [TTO] | annual total | report only (mg/L) | all year |
| BOD, 5-day, percent removal | minimum | ≥ 85 % | all year |
| Solids, suspended percent removal | minimum % removal | ≥ 85 % | all year |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Nitrogen, ammonia total [as N], daily maximum | 2.3 mg/L (Jan–Mar) | tighter | 1.18 mg/L (3 values) | 0.513× |
| Nitrogen, ammonia total [as N], daily maximum | 2.3 mg/L (Apr–Jun) | tighter | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 2.3 mg/L (Oct–Dec) | tighter | 1.19 mg/L (3 values) | 0.517× |
| Nitrogen, ammonia total [as N], daily maximum | 2.3 mg/L (Jul–Sep) | tighter | — | — |
| Nitrogen, ammonia total [as N], maximum monthly average | 2.3 mg/L (Jan–Mar) | tighter | 0.72 mg/L (3 values) | 0.313× |
| Nitrogen, ammonia total [as N], maximum monthly average | 1.5 mg/L (Apr–Jun) | tighter | — | — |
| Nitrogen, ammonia total [as N], maximum monthly average | 2.2 mg/L (Oct–Dec) | tighter | 1.36 mg/L (3 values) | 0.618× |
| Nitrogen, ammonia total [as N], monthly maximum | 337.8 lb/mo (Jul–Sep) | tighter | — | — |
Cited limits by parameter: Utah's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/UT0021130 · MCP: https://passage-data.com/mcp