Passage Data · Check a report · Use it from your AI
Fish Hatcheries And Preserves, Berlin, New Hampshire. NPDES permit NH0000621 expired Feb 28, 2018; its limits still apply. Last 12 months: over a limit 4 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit |
|---|---|---|---|---|
| January 2026 | 008 | pH, minimum | 5.79 SU | ≥ 6 SU |
| March 2026 | 005 | pH, minimum | 5.63 SU | ≥ 6 SU |
| March 2026 | 007 | pH, minimum | 5.64 SU | ≥ 6 SU |
| March 2026 | 008 | pH, minimum | 5.4 SU | ≥ 6 SU |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 004 |
| Hydrogen peroxide | daily maximum | ≤ .7 mg/L | all year | 004 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 004 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 004 |
| Oxygen, dissolved percent saturation | daily maximum | report only (%) | all year | 004 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 004 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 004 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | 004 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | 004 |
| pH | minimum | ≥ 6 SU | all year | 004 |
| pH | maximum | ≤ 8 SU | all year | 004 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 004 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 004 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 004 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 004 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 004 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 004 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 004 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 004 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 004 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 004 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 004 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 004 |
| Fish feed used | monthly average | report only (lb/d) | all year | 004 |
| Fish feed used | monthly average | report only (%) | all year | 004 |
| Biomass, fish | monthly average | report only (lb/d) | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Chlorine, total residual | monthly average | ≤ .011 mg/L | all year | 004 |
| Chlorine, total residual | daily maximum | ≤ .019 mg/L | all year | 004 |
| Formaldehyde | monthly average | ≤ 1.6 mg/L | all year | 004 |
| Formaldehyde | daily maximum | ≤ 4.6 mg/L | all year | 004 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 005 |
| Hydrogen peroxide | daily maximum | ≤ .7 mg/L | all year | 005 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 005 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 005 |
| Oxygen, dissolved percent saturation | daily maximum | report only (%) | all year | 005 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 005 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 005 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | 005 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | 005 |
| pH | minimum | ≥ 6 SU | all year | 005 |
| pH | daily maximum | ≤ 8 SU | all year | 005 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 005 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 005 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 005 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 005 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 005 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 005 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 005 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 005 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 005 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 005 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 005 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 005 |
| Fish feed used | monthly average | report only (lb/d) | all year | 005 |
| Fish feed used | monthly average | report only (%) | all year | 005 |
| Biomass, fish | monthly average | report only (lb/d) | all year | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 005 |
| Chlorine, total residual | monthly average | ≤ .011 mg/L | all year | 005 |
| Chlorine, total residual | daily maximum | ≤ .019 mg/L | all year | 005 |
| Formaldehyde | monthly average | ≤ 1.6 mg/L | all year | 005 |
| Formaldehyde | daily maximum | ≤ 4.6 mg/L | all year | 005 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 007 |
| Hydrogen peroxide | daily maximum | ≤ 1.1 mg/L | all year | 007 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 007 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 007 |
| Oxygen, dissolved percent saturation | daily maximum | report only (%) | all year | 007 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 007 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 007 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | 007 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | 007 |
| pH | minimum | ≥ 6 SU | all year | 007 |
| pH | daily maximum | ≤ 8 SU | all year | 007 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 007 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 007 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 007 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 007 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 007 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 007 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 007 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 007 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 007 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 007 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 007 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 007 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 1.5 MGD | all year | 007 |
| Chlorine, total residual | monthly average | ≤ .026 mg/L | all year | 007 |
| Chlorine, total residual | daily maximum | ≤ .029 mg/L | all year | 007 |
| Formaldehyde | monthly average | ≤ 3.8 mg/L | all year | 007 |
| Formaldehyde | daily maximum | ≤ 6.9 mg/L | all year | 007 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 008 |
| Hydrogen peroxide | daily maximum | ≤ .7 mg/L | all year | 008 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 008 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 008 |
| Oxygen, dissolved percent saturation | daily maximum | report only (%) | all year | 008 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 008 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 008 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | 008 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | 008 |
| pH | minimum | ≥ 6 SU | all year | 008 |
| pH | maximum | ≤ 8 SU | all year | 008 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 008 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 008 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 008 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 008 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 008 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 008 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 008 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 008 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 008 |
| Phosphorus, total [as P] | daily maximum | ≤ .05 mg/L | all year | 008 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 008 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 008 |
| Phosphorus, total [as P] | maximum | ≤ 190 lb/d | Dec | 008 |
| Fish feed used | monthly average | report only (lb/d) | all year | 008 |
| Fish feed used | monthly average | report only (%) | all year | 008 |
| Biomass, fish | monthly average | report only (lb/d) | all year | 008 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 008 |
| Chlorine, total residual | monthly average | ≤ .011 mg/L | all year | 008 |
| Chlorine, total residual | daily maximum | ≤ .019 mg/L | all year | 008 |
| Formaldehyde | monthly average | ≤ 1.6 mg/L | all year | 008 |
| Formaldehyde | daily maximum | ≤ 4.6 mg/L | all year | 008 |
Cited limits by parameter: New Hampshire's rules and the federal ones.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/NH0000621 · MCP: https://passage-data.com/mcp