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Distrigas of Mass LLC

Natural Gas Transmission, Everett, Massachusetts. NPDES permit MA0020010 expired Nov 30, 2014; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form Q quarterly (11 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 5 reports late

Limits in force (25)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Flow ratedaily maximumreport only (MGD)all year
Flow ratedaily maximumreport only (MGD)all year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendeddaily maximum≤ 100 mg/Lall year
Cyanide, total [as CN]daily maximumreport only (ug/L)all year
Cyanide, total [as CN]daily maximumreport only (mg/L)Oct–Dec
Cyanide, total [as CN]daily maximumreport only (ug/L)all year
Arsenic, total [as As]daily maximumreport only (ng/L)Oct–Dec
Copper, dissolved [as Cu]daily maximumreport only (mg/L)Oct–Dec
Zinc, total [as Zn]daily maximumreport only (mg/L)Oct–Dec
Toluenedaily maximumreport only (ug/L)Oct–Dec
Benzenedaily maximumreport only (ug/L)Oct–Dec
Chrysenedaily maximumreport only (ug/L)Oct–Dec
Ethylbenzenedaily maximumreport only (ug/L)Oct–Dec
Fluoranthenedaily maximumreport only (ug/L)Oct–Dec
Phenanthrenedaily maximumreport only (ug/L)Oct–Dec
Pyrenedaily maximumreport only (ug/L)Oct–Dec
Benzo[ghi]perylenedaily maximumreport only (ug/L)Oct–Dec
Benzo[a]anthracenedaily maximumreport only (ug/L)Oct–Dec
Naphthalenedaily maximumreport only (ug/L)Oct–Dec
Rainfalltotalreport only (in)all year
Chlorine, total residualdaily maximumreport only (mg/L)all year
Enterococcidaily maximumreport only (CFU/100mL)Jul–Sep

Cited limits by parameter: Massachusetts'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/MA0020010 · MCP: https://passage-data.com/mcp