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Sewage treatment plant, major discharger, Thomaston, Maine. NPDES permit ME0100668 expired Sep 30, 2023; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | Jan–Mar | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 50 mg/L | Jan–Mar | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 225 lb/d | Jan–Mar | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 375 lb/d | Jan–Mar | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | Jan–Mar | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 338 lb/d | Jan–Mar | 001 |
| pH | minimum | ≥ 6 SU | Jan–Mar | 001 |
| pH | maximum | ≤ 9 SU | Jan–Mar | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | Jan–Mar | 001 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | Jan–Mar | 001 |
| Solids, total suspended | monthly average | ≤ 225 lb/d | Jan–Mar | 001 |
| Solids, total suspended | daily maximum | ≤ 375 lb/d | Jan–Mar | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | Jan–Mar | 001 |
| Solids, total suspended | weekly average | ≤ 338 lb/d | Jan–Mar | 001 |
| Solids, settleable | daily maximum | ≤ .3 mL/L | Jan–Mar | 001 |
| Flow, in conduit or thru treatment plant | monthly average | ≤ .9 MGD | Jan–Mar | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Jan–Mar | 001 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | Jan–Mar | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 15 #/100mL | Jan–Mar | 001 |
| Coliform, fecal general | daily maximum | ≤ 50 #/100mL | Jan–Mar | 001 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | Jan–Mar | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | Jan–Mar | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 100 mg/L | Apr, May, Aug, Oct | 002 |
| pH | maximum | report only (SU) | Apr, May, Aug, Oct | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | Apr, May, Aug, Oct | 002 |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | Apr, May, Aug, Oct | 002 |
| Lagoon freeboard | daily minimum | ≥ 3 ft | Apr–Nov | 002 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Oct | 02B |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Oct | 02B |
| Specific conductance | daily maximum | report only (umho/cm) | May, Oct | 02B |
| Specific conductance | daily maximum | report only (umho/cm) | May, Oct | 02B |
| pH | minimum | report only (SU) | May, Oct | 02B |
| pH | minimum | report only (SU) | May, Oct | 02B |
| pH | maximum | report only (SU) | May, Oct | 02B |
| pH | maximum | report only (SU) | May, Oct | 02B |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Oct | 02B |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Oct | 02B |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Oct | 02B |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Oct | 02B |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Oct | 02B |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Oct | 02B |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Oct | 02D |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Oct | 02D |
| Specific conductance | daily maximum | report only (umho/cm) | May, Oct | 02D |
| Specific conductance | daily maximum | report only (umho/cm) | May, Oct | 02D |
| pH | minimum | report only (SU) | May, Oct | 02D |
| pH | minimum | report only (SU) | May, Oct | 02D |
| pH | maximum | report only (SU) | May, Oct | 02D |
| pH | maximum | report only (SU) | May, Oct | 02D |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Oct | 02D |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Oct | 02D |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Oct | 02D |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Oct | 02D |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Oct | 02D |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Oct | 02D |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Oct | 02G |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Oct | 02G |
| Specific conductance | daily maximum | report only (umho/cm) | May, Oct | 02G |
| Specific conductance | daily maximum | report only (umho/cm) | May, Oct | 02G |
| pH | minimum | report only (SU) | May, Oct | 02G |
| pH | minimum | report only (SU) | May, Oct | 02G |
| pH | maximum | report only (SU) | May, Oct | 02G |
| pH | maximum | report only (SU) | May, Oct | 02G |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Oct | 02G |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Oct | 02G |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Oct | 02G |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Oct | 02G |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Oct | 02G |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Oct | 02G |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Oct | 02H |
| Specific conductance | daily maximum | report only (umho/cm) | May, Oct | 02H |
| pH | minimum | report only (SU) | May, Oct | 02H |
| pH | maximum | report only (SU) | May, Oct | 02H |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Oct | 02H |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Oct | 02H |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Oct | 02H |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | May, Oct | 02I |
| Specific conductance | daily maximum | report only (umho/cm) | May, Oct | 02I |
| pH | minimum | report only (SU) | May, Oct | 02I |
| pH | maximum | report only (SU) | May, Oct | 02I |
| Solids, total suspended | daily maximum | report only (mg/L) | May, Oct | 02I |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | May, Oct | 02I |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | May, Oct | 02I |
| Application rate, gallons spray irrigation | weekly maximum | ≤ 758700 gal | Apr–Nov | FLD |
| Application rate, gallons spray irrigation | weekly maximum | ≤ 957050 gal | Apr–Nov | FLD |
| Application rate, gallons spray irrigation | weekly maximum | ≤ 857650 gal | Apr–Nov | FLD |
| Application rate, gallons spray irrigation | weekly maximum | ≤ 857650 gal | Apr–Nov | FLD |
| Application rate, gallons spray irrigation | weekly maximum | ≤ 923650 gal | Apr–Nov | FLD |
| Application rate, gallons spray irrigation | monthly total | report only (Mgal) | Jan, Feb, Mar, Dec | FLD |
| Application rate, gallons spray irrigation | year-to-date total | report only (Mgal) | Jan, Feb, Mar, Dec | FLD |
| Application rate, gallons spray irrigation | year-to-date total | ≤ 30 Mgal | Mar | FLD |
| Flow, total | monthly total | report only (Mgal/mo) | Apr–Nov | FLD |
| Flow, total | monthly total | report only (Mgal/mo) | Apr–Nov | FLD |
| Flow, total | monthly total | report only (Mgal/mo) | Apr–Nov | FLD |
| Flow, total | monthly total | report only (Mgal/mo) | Apr–Nov | FLD |
| Flow, total | monthly total | report only (Mgal/mo) | Apr–Nov | FLD |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | Jul–Sep | UD1 |
| Flow rate | daily maximum | report only (gal/min) | Jul–Sep | UD1 |
| Specific conductance | daily maximum | report only (umho/cm) | Jul–Sep | UD1 |
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/ME0100668 · MCP: https://passage-data.com/mcp