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Water Supply, Hooksett, New Hampshire. NPDES permit NH0001621, in force until Dec 31, 2028. Last 12 months: over a limit 5 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | Iron, total [as Fe], monthly average | 5.9 lb/d | ≤ 2.5 lb/d | 136% |
| November 2025 | Manganese, total [as Mn], monthly average | 4.8 lb/d | ≤ .42 lb/d | 1043% |
| April 2026 | Iron, total [as Fe], monthly average | 5.5 lb/d | ≤ 2.5 lb/d | 120% |
| April 2026 | Manganese, total [as Mn], monthly average | 3.7 lb/d | ≤ .42 lb/d | 781% |
| May 2026 | Manganese, total [as Mn], monthly average | .7 lb/d | ≤ .42 lb/d | 67% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | Apr–Sep | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 8 SU | all year | 001 |
| pH | daily maximum | report only (SU) | all year | 001 |
| pH | maximum | report only (SU) | Apr–Sep | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Apr–Sep | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Apr–Sep | 001 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | Apr–Sep | 001 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | Apr–Sep | 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) | Apr–Sep | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | Apr–Sep | 001 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | Apr–Sep | 001 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | Apr–Sep | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | Apr–Sep | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | Apr–Sep | 001 |
| Iron, total [as Fe] | monthly average | report only (ug/L) | all year | 001 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 001 |
| Iron, total [as Fe] | monthly average | ≤ 2.5 lb/d | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | Apr–Sep | 001 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | Apr–Sep | 001 |
| Manganese, total [as Mn] | monthly average | report only (ug/L) | all year | 001 |
| Manganese, total [as Mn] | daily maximum | report only (ug/L) | all year | 001 |
| Manganese, total [as Mn] | monthly average | ≤ .42 lb/d | all year | 001 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | Apr–Sep | 001 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | Apr–Sep | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | Apr–Sep | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | Apr–Sep | 001 |
| Aluminum, total [as Al] | monthly average | ≤ 87 ug/L | all year | 001 |
| Aluminum, total [as Al] | daily maximum | ≤ 750 ug/L | all year | 001 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | Apr–Sep | 001 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 001 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | Apr–Sep | 001 |
| Tetrachloroethylene | daily maximum | report only (ug/L) | all year | 001 |
| Flow, wastewater by-passing trtmnt plant | daily maximum | report only (gal/mo) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 1 MGD | all year | 001 |
| Chlorine, total residual | monthly average | ≤ 1 mg/L | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 001 |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | monthly average minimum | report only (%) | Apr–Sep | 001 |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorobutanoic acid (PFBA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorooctanesulfonamide (PFOSA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluoropentanoic acid (PFPeA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorohexanoic acid (PFHxA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluoroheptanoic acid (PFHpA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorononanoic acid (PFNA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorodecanoic acid (PFDA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluoroundecanoic acid (PFUnA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorododecanoic acid (PFDoA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorotridecanoic acid (PFTrDA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorotetradecanoic acid (PFTeDA) | daily maximum | report only (ng/L) | all year | PFAS |
| N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE) | daily maximum | report only (ng/L) | all year | PFAS |
| N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE) | daily maximum | report only (ng/L) | all year | PFAS |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | daily maximum | report only (ng/L) | all year | PFAS |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorobutanesulfonic acid (PFBS) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorodecanesulfonic acid (PFDS) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluoroheptanesulfonic acid (PFHpS) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorohexanesulfonic acid (PFHxS) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorooctanesulfonic acid (PFOS) | daily maximum | report only (ng/L) | all year | PFAS |
| 1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS) | daily maximum | report only (ng/L) | all year | PFAS |
| 1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS) | daily maximum | report only (ng/L) | all year | PFAS |
| 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluoropentanesulfonic acid (PFPeS) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorononanesulfonic acid (PFNS) | daily maximum | report only (ng/L) | all year | PFAS |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | daily maximum | report only (ng/L) | all year | PFAS |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorododecanesulfonic acid (PFDoS) | daily maximum | report only (ng/L) | all year | PFAS |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | daily maximum | report only (ng/L) | all year | PFAS |
| N-methyl perfluorooctanesulfonamide (NMeFOSA) | daily maximum | report only (ng/L) | all year | PFAS |
| N-ethyl perfluorooctanesulfonamide (NEtFOSA) | daily maximum | report only (ng/L) | all year | PFAS |
| 3-Perfluoropropyl propanoic acid (3:3 FTCA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | daily maximum | report only (ng/L) | all year | PFAS |
| 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS) | daily maximum | report only (ng/L) | all year | PFAS |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | daily maximum | report only (ng/L) | all year | PFAS |
| 3-Perfluoroheptyl propanoic acid (7:3 FTCA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | daily maximum | report only (ng/L) | all year | PFAS |
| 2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA) | daily maximum | report only (ng/L) | all year | PFAS |
| Fluorine, adsorbable organic | daily maximum | report only (ng/L) | 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/NH0001621 · MCP: https://passage-data.com/mcp