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Usepa - Atlantic Coastal Environmental Sciences Division

Federal facility (Noncommercial Research Organizations), Narragansett, Rhode Island. NPDES permit RI0000949, in force until Dec 31, 2029. Last 12 months: no values over a limit, 1 of 4 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: form A quarterly (8 values)
Last report on file: September 2026
Oct 2024 – Sep 2025: 0 values over a limit, 9 required values missing, 3 of 4 reports late

Limits in force (8)

Parameter	Statistic	Limit	Months
Oxygen, dissolved [DO]	daily maximum	report only (mg/L)	all year
BOD, 5-day, 20 deg. C	daily maximum	≤ 9.2 mg/L	all year
Solids, total suspended	daily maximum	report only (mg/L)	all year
Flow, in conduit or thru treatment plant	monthly average	≤ .98 MGD	all year
Chlorine, total residual	monthly average	≤ .434 mg/L	all year
Chlorine, total residual	daily maximum	≤ .434 mg/L	all year
Enterococci	daily maximum	report only (CFU/100mL)	all year
Coliform, fecal general	daily maximum	report only (MPN/100mL)	all year

How strict are these limits?

BOD, 5-day, 20 deg. C, daily maximum 9.2 mg/L — stricter than 97% of 69 other minor federal facilities nationwide
Chlorine, total residual, monthly average .434 mg/L — stricter than 39% of 38 other minor federal facilities nationwide
Chlorine, total residual, daily maximum .434 mg/L — stricter than 25% of 64 other minor federal facilities nationwide

Cited limits by parameter: Rhode Island'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/RI0000949 · MCP: https://passage-data.com/mcp