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Irish Potatoes, Washburn, Maine. NPDES permit MEU508272 expired May 31, 2025; its limits still apply. Last 12 months: over a limit 3 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| May 2026 | MW1 | Nitrogen, nitrate total [as N], daily maximum | 15 mg/L | ≤ 10 mg/L | 50% |
| August 2026 | MW1 | Nitrogen, nitrate total [as N], daily maximum | 12 mg/L | ≤ 10 mg/L | 20% |
| September 2026 | 001 | Solids, total suspended, daily maximum | 298 mg/L | ≤ 250 mg/L | 19% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 100 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 250 mg/L | all year | 001 |
| pH | daily maximum | report only (SU) | all year | 001 |
| pH | daily maximum | report only (SU) | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 250 mg/L | all year | 001 |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Lagoon freeboard | monthly minimum | ≥ 2 ft | all year | 001 |
| Lagoon freeboard | monthly minimum | ≥ 2 ft | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Aug, Oct | MW0 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Aug, Oct | MW0 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Aug, Oct | MW0 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Aug, Oct | MW0 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Aug, Oct | MW0 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Aug, Oct | MW0 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Aug, Oct | MW0 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Aug, Oct | MW0 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Aug, Oct | MW0 |
| Specific conductance | daily maximum | report only (umho/cm) | May, Aug, Oct | MW0 |
| Specific conductance | daily maximum | report only (umho/cm) | May, Aug, Oct | MW0 |
| Specific conductance | daily maximum | report only (umho/cm) | May, Aug, Oct | MW0 |
| Specific conductance | daily maximum | report only (umho/cm) | May, Aug, Oct, Nov | MW0 |
| Specific conductance | daily maximum | report only (umho/cm) | May, Aug, Oct | MW0 |
| Specific conductance | daily maximum | report only (umho/cm) | May, Aug, Oct | MW0 |
| Specific conductance | daily maximum | report only (umho/cm) | May, Aug, Oct | MW0 |
| Specific conductance | daily maximum | report only (umho/cm) | May, Aug, Oct | MW0 |
| Specific conductance | daily maximum | report only (umho/cm) | May, Aug, Oct | MW0 |
| pH | daily maximum | report only (SU) | May, Aug, Oct | MW0 |
| pH | daily maximum | report only (SU) | May, Aug, Oct | MW0 |
| pH | daily maximum | report only (SU) | May, Aug, Oct | MW0 |
| pH | daily maximum | report only (SU) | May, Aug, Oct | MW0 |
| pH | daily maximum | report only (SU) | May, Aug, Oct | MW0 |
| pH | daily maximum | report only (SU) | May, Aug, Oct | MW0 |
| pH | daily maximum | report only (SU) | May, Aug, Oct | MW0 |
| pH | daily maximum | report only (SU) | May, Aug, Oct | MW0 |
| pH | daily maximum | report only (SU) | May, Aug, Oct | MW0 |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Aug, Oct | MW0 |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Aug, Oct | MW0 |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Aug, Oct, Nov | MW0 |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Aug, Oct | MW0 |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Aug, Oct | MW0 |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Aug, Oct | MW0 |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Aug, Oct | MW0 |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Aug, Oct | MW0 |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Aug, Oct | MW0 |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Aug, Oct | MW0 |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Aug, Oct | MW0 |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Aug, Oct | MW0 |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Aug, Oct | MW0 |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Aug, Oct | MW0 |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Aug, Oct | MW0 |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Aug, Oct | MW0 |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Aug, Oct | MW0 |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Aug, Oct | MW0 |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Aug, Oct | MW0 |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Aug, Oct | MW0 |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Aug, Oct | MW0 |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Aug, Oct | MW0 |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Aug, Oct | MW0 |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Aug, Oct | MW0 |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Aug, Oct | MW0 |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Aug, Oct | MW0 |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Aug, Oct | MW0 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Aug, Oct | MW1 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Aug, Oct | MW1 |
| Specific conductance | daily maximum | report only (umho/cm) | May, Aug, Oct | MW1 |
| Specific conductance | daily maximum | report only (umho/cm) | May, Aug, Oct | MW1 |
| pH | daily maximum | report only (SU) | May, Aug, Oct | MW1 |
| pH | daily maximum | report only (SU) | May, Aug, Oct | MW1 |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Aug, Oct | MW1 |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Aug, Oct | MW1 |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Aug, Oct | MW1 |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Aug, Oct | MW1 |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Aug, Oct | MW1 |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Aug, Oct | MW1 |
| Application rate, weekly spray irrigation. | weekly maximum | ≤ 40728 gal/acr | Apr–Nov | SF1 |
| Flow, total | monthly total | report only (gal) | May–Oct | SF1 |
| Flow, total | monthly total | report only (gal) | Apr–Nov | SF1 |
| Application rate, gallons spray irrigation | monthly total | report only (gal) | Jan, Feb, Mar, Apr, Nov, Dec | SM1 |
| Application rate, gallons spray irrigation | annual total | ≤ 32 Mgal | Apr | SM1 |
Cited limits by parameter: Maine'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/MEU508272 · MCP: https://passage-data.com/mcp