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Paper Mills, major discharger, Bennington, New Hampshire. NPDES permit NH0000230, in force until Feb 28, 2027. Last 12 months: over a limit 5 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Aluminum, total recoverable, monthly average | 130 ug/L | ≤ 87 ug/L | 49% |
| November 2025 | Aluminum, total recoverable, monthly average | 120 ug/L | ≤ 87 ug/L | 38% |
| July 2026 | Aluminum, total recoverable, monthly average | 120 ug/L | ≤ 87 ug/L | 38% |
| August 2026 | Aluminum, total recoverable, monthly average | 150 ug/L | ≤ 87 ug/L | 72% |
| September 2026 | Aluminum, total recoverable, monthly average | 94 ug/L | ≤ 87 ug/L | 8% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 300 lb/d | Apr–Nov | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 400 lb/d | Jan, Feb, Mar, Dec | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 400 lb/d | Apr–Nov | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 500 lb/d | Jan, Feb, Mar, Dec | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 8.5 SU | all year | 001 |
| pH | daily maximum | report only (SU) | all year | 001 |
| Solids, total suspended | monthly average | ≤ 300 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 400 lb/d | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | Jul–Sep | 001 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | Jul–Sep | 001 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 001 |
| Carbon, dissolved organic [as C] | daily maximum | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Nickel, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Aluminum, total recoverable | monthly average | ≤ 87 ug/L | all year | 001 |
| Aluminum, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Aluminum, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Cadmium, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Copper, total recoverable | daily maximum | ≤ 14.5 ug/L | all year | 001 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | ≤ 1 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 1.3 MGD | all year | 001 |
| Chlorine, total residual | daily maximum | report only (mg/L) | all year | 001 |
| Chlorine, total residual | daily maximum | report only (mg/L) | all year | 001 |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | monthly average minimum | ≥ 100 % | Jul–Sep | 001 |
| LC50 Static 48Hr Acute Pimephales promelas | monthly average minimum | ≥ 100 % | Jul–Sep | 001 |
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | monthly average minimum | ≥ 10.4 % | all year | 001 |
| Noel Statre 7Day Chronic Pimephales | monthly average minimum | ≥ 10.4 % | all year | 001 |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/g) | all year | PFAS |
| Perfluorononanoic acid (PFNA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorononanoic acid (PFNA) | daily maximum | report only (ng/g) | all year | PFAS |
| Perfluorohexanesulfonic acid (PFHxS) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorohexanesulfonic acid (PFHxS) | daily maximum | report only (ng/g) | all year | PFAS |
| Perfluorooctanesulfonic acid (PFOS) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorooctanesulfonic acid (PFOS) | daily maximum | report only (ng/g) | all year | PFAS |
Cited limits by parameter: New Hampshire'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/NH0000230 · MCP: https://passage-data.com/mcp