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Pulp Mills, major discharger, Gorham, New Hampshire. NPDES permit NH0000655 expired Dec 31, 2013; its limits still apply. Last 12 months: over a limit 7 times (last May 2026), 8 of 56 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit |
|---|---|---|---|---|
| February 2026 | 010 | pH, minimum | 6.45 SU | ≥ 6.5 SU |
| March 2026 | 010 | pH, minimum | 6.19 SU | ≥ 6.5 SU |
| March 2026 | 025 | pH, minimum | 6.46 SU | ≥ 6.5 SU |
| April 2026 | 010 | pH, minimum | 5.98 SU | ≥ 6.5 SU |
| April 2026 | 025 | pH, minimum | 6.41 SU | ≥ 6.5 SU |
| May 2026 | 010 | pH, minimum | 6.25 SU | ≥ 6.5 SU |
| May 2026 | 025 | pH, minimum | 6.46 SU | ≥ 6.5 SU |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Turbidity | weekly average | report only (NTU) | all year | 010 |
| Turbidity | weekly average | report only (NTU) | all year | 010 |
| Turbidity | daily maximum | report only (NTU) | all year | 010 |
| Turbidity | daily maximum | report only (NTU) | all year | 010 |
| Turbidity | weekly average | report only (NTU) | all year | 010 |
| Turbidity | weekly average | report only (NTU) | all year | 010 |
| Turbidity | daily maximum | report only (NTU) | all year | 010 |
| Turbidity | daily maximum | report only (NTU) | all year | 010 |
| Color [PT-CO units] | monthly average | report only (col unit (pc)) | all year | 010 |
| pH | minimum | ≥ 6.5 SU | all year | 010 |
| pH | minimum | ≥ 6 SU | all year | 010 |
| pH | maximum | ≤ 8 SU | all year | 010 |
| pH | maximum | ≤ 8 SU | all year | 010 |
| pH | daily maximum | report only (SU) | all year | 010 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 010 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 010 |
| Iron, total [as Fe] | monthly average | ≤ 4 mg/L | all year | 010 |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year | 010 |
| Iron, total [as Fe] | monthly geometric mean | ≤ 267 lb/d | all year | 010 |
| Iron, total [as Fe] | daily maximum | ≤ 400 lb/d | all year | 010 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | monthly average | ≤ 8 MGD | all year | 010 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 10 MGD | all year | 010 |
| Free cationic polymer | monthly average | ≤ .5 mg/L | all year | 010 |
| Free cationic polymer | daily maximum | ≤ .8 mg/L | all year | 010 |
| Turbidity, change | weekly average | report only (NTU) | all year | 010 |
| Turbidity, change | daily maximum | report only (NTU) | all year | 010 |
| Turbidity, change | weekly average | report only (NTU) | all year | 010 |
| Turbidity, change | daily maximum | report only (NTU) | all year | 010 |
| pH change [range] | daily maximum | report only (SU) | all year | 010 |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | daily minimum | ≥ 80 % | all year | 010 |
| LC50 Static 48Hr Acute Pimephales promelas | daily minimum | ≥ 80 % | all year | 010 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 018 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 018 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 018 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 018 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 018 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 018 |
| Flow rate | monthly average | report only (MGD) | all year | 018 |
| Flow rate | daily minimum | report only (MGD) | all year | 018 |
| Turbidity | monthly average | report only (NTU) | all year | 018 |
| Turbidity | daily maximum | report only (NTU) | all year | 018 |
| Turbidity | monthly average | report only (NTU) | all year | 018 |
| Turbidity | daily maximum | report only (NTU) | all year | 018 |
| Turbidity | monthly average | report only (NTU) | all year | 018 |
| Turbidity | daily maximum | report only (NTU) | all year | 018 |
| Specific conductance | daily average | report only (umho/cm) | all year | 018 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 018 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | Jun–Sep | 018 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 018 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | Jun–Sep | 018 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 018 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 9149 lb/d | Jun–Sep | 018 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 9160 lb/d | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 018 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 10298 lb/d | Jun–Sep | 018 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 17078 lb/d | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 018 |
| pH | minimum | ≥ 6 SU | all year | 018 |
| pH | daily minimum | report only (SU) | all year | 018 |
| pH | maximum | ≤ 8 SU | all year | 018 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 018 |
| Solids, total suspended | monthly average | report only (mg/L) | Jun–Sep | 018 |
| Solids, total suspended | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 018 |
| Solids, total suspended | daily minimum | report only (mg/L) | all year | 018 |
| Solids, total suspended | daily maximum | report only (mg/L) | Jun–Sep | 018 |
| Solids, total suspended | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 018 |
| Solids, total suspended | monthly average | ≤ 9282 lb/d | Jun–Sep | 018 |
| Solids, total suspended | monthly average | ≤ 9282 lb/d | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 018 |
| Solids, total suspended | daily maximum | ≤ 18095 lb/d | Jun–Sep | 018 |
| Solids, total suspended | daily maximum | ≤ 18095 lb/d | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 018 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 018 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | Jun–Sep | 018 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Jun–Sep | 018 |
| Phosphorus, total [as P] | monthly average | ≤ 129 lb/d | Jun–Sep | 018 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | Jun–Sep | 018 |
| Phosphate, ortho, dissolved [as P] | monthly average | report only (mg/L) | Jun–Sep | 018 |
| Phosphate, ortho, dissolved [as P] | daily maximum | report only (mg/L) | Jun–Sep | 018 |
| Phosphate, ortho, dissolved [as P] | monthly average | report only (lb/d) | Jun–Sep | 018 |
| Phosphate, ortho, dissolved [as P] | daily maximum | report only (lb/d) | Jun–Sep | 018 |
| Carbon, tot organic [TOC] | daily minimum | report only (mg/L) | all year | 018 |
| Hardness, total [as CaCO3] | daily minimum | report only (mg/L) | all year | 018 |
| Calcium, total [as Ca] | daily minimum | report only (mg/L) | all year | 018 |
| Magnesium, total [as Mg] | daily minimum | report only (mg/L) | all year | 018 |
| Cadmium, total [as Cd] | daily minimum | report only (mg/L) | all year | 018 |
| Chromium, total [as Cr] | daily minimum | report only (mg/L) | all year | 018 |
| Copper, total [as Cu] | daily minimum | report only (mg/L) | all year | 018 |
| Lead, total [as Pb] | daily minimum | report only (mg/L) | all year | 018 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | 018 |
| Zinc, total [as Zn] | daily minimum | report only (mg/L) | all year | 018 |
| Aluminum, total [as Al] | daily minimum | report only (mg/L) | all year | 018 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 018 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 018 |
| Chlorine, total residual | daily minimum | report only (mg/L) | all year | 018 |
| Temperature Increase Deg. F | monthly average | report only (deg F) | all year | 018 |
| Temperature Increase Deg. F | daily maximum | report only (deg F) | all year | 018 |
| Turbidity, change | monthly average | report only (NTU) | all year | 018 |
| Turbidity, change | daily maximum | report only (NTU) | all year | 018 |
| Heat [summer] [per day] | monthly average | report only (MBTU/d) | Jun–Sep | 018 |
| Heat [summer] [per day] | daily maximum | ≤ 1595 MBTU/d | Jun–Sep | 018 |
| Heat [winter] [per day] | monthly average | report only (MBTU/d) | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 018 |
| Heat [winter] [per day] | daily maximum | ≤ 2499 MBTU/d | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 018 |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | daily minimum | ≥ 100 % | all year | 018 |
| LC50 Static 48Hr Acute Pimephales promelas | daily minimum | ≥ 100 % | all year | 018 |
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | daily minimum | report only (%) | all year | 018 |
| Noel Statre 7Day Chronic Pimephales | daily minimum | report only (%) | all year | 018 |
| pH | minimum | ≥ 6.5 SU | all year | 025 |
| pH | maximum | ≤ 8 SU | all year | 025 |
| pH | maximum | report only (SU) | all year | 025 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 025 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 025 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 025 |
| pH change [range] | maximum | report only (SU) | all year | 025 |
Cited limits by parameter: New Hampshire's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/NH0000655 · MCP: https://passage-data.com/mcp