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Comm of Ma, Dept of Conservation and Rec

Local And Suburban Transit, Somerville, Massachusetts. NPDES permit MA0003590 expired Jul 31, 2012; its limits still apply. Last 12 months: no values over a limit, 8 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A quarterly (17 values), form Q quarterly (10 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 2 required values missing, 1 of 17 reports late

Limits in force (41)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.3 SUall year
Solids, total suspendeddaily maximum≤ 100 mg/Lall year
Oil & Greasedaily maximum≤ 15 mg/Lall year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Magnesium, total [as Mg]daily maximumreport only (mg/L)all year
Magnesium, total [as Mg]daily maximumreport only (mg/L)all year
Magnesium, total [as Mg]daily maximumreport only (mg/L)all year
Magnesium, total [as Mg]daily maximumreport only (mg/L)all year
Iron, total [as Fe]daily maximumreport only (mg/L)all year
Iron, total [as Fe]daily maximumreport only (mg/L)all year
Iron, total [as Fe]daily maximumreport only (mg/L)all year
Iron, total [as Fe]daily maximumreport only (mg/L)all year
E. coli, thermotol, MF, MTECmonthly geometric meanreport only (CFU/100mL)all year
E. coli, thermotol, MF, MTECdaily maximumreport only (CFU/100mL)all year
E. coli, thermotol, MF, MTECmonthly geometric meanreport only (CFU/100mL)all year
E. coli, thermotol, MF, MTECdaily maximumreport only (CFU/100mL)all year
Benzenedaily maximum≤ 51 ug/Lall year
Benzenedaily maximum≤ 51 ug/Lall year
Benzenedaily maximumreport only (ug/L)all year
Benzenedaily maximumreport only (ug/L)all year
Priority Pollutantstotalreport only (ug/L)all year
Priority Pollutantstotalreport only (ug/L)all year
Priority Pollutantsdaily maximumreport only (ug/L)all year
Priority Pollutantsdaily maximumreport only (ug/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Coliform, fecal generalmonthly geometric meanreport only (CFU/100mL)all year
Coliform, fecal generaldaily maximumreport only (CFU/100mL)all year
Coliform, fecal generalmonthly geometric meanreport only (CFU/100mL)all year
Coliform, fecal generaldaily maximumreport only (CFU/100mL)all year
LC50 Static 48Hr Acute Ceriodaphnia dubiamonthly average minimumreport only (%)Jul
LC50 Static 48Hr Acute Pimephales promelasmonthly average minimumreport only (%)Jul
NOEL Static 7Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)Jul
Noel Static 7Day Chronic Pimephalesmonthly average minimumreport only (%)Jul

How strict are these limits?

Cited limits by parameter: Massachusetts's rules and the federal ones.

Same industry: the 3 Local and Interurban Passenger Transit permits in Massachusetts.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MA0003590 · MCP: https://passage-data.com/mcp