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Greenwich Mills, LLC

Nonresidential Building Operators, Warwick, Rhode Island. NPDES permit RI0023639 expired Dec 31, 2025; its limits still apply. Last 12 months: over a limit once (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A twice a year, form B yearly, form C twice a year
Last report on file
June 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 5 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
June 2026Di[2-ethylhexyl] phthalate [DEHP], daily maximum8.68 ug/L≤ 5 ug/L74%

Limits in force (22)

ParameterStatisticLimitMonths
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 SUall year
Tetrachloroethylenemonthly averagereport only (ug/L)all year
Tetrachloroethylenedaily maximum≤ 5 ug/Lall year
Tetrachloroethylenemonthly averagereport only (ug/L)all year
Tetrachloroethylenedaily maximumreport only (ug/L)all year
Tetrachloroethylenemonthly averagereport only (ug/L)all year
Tetrachloroethylenedaily maximumreport only (ug/L)all year
Di[2-ethylhexyl] phthalate [DEHP]monthly averagereport only (ug/L)all year
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ 5 ug/Lall year
Di[2-ethylhexyl] phthalate [DEHP]monthly averagereport only (ug/L)all year
Di[2-ethylhexyl] phthalate [DEHP]daily maximumreport only (ug/L)all year
Di[2-ethylhexyl] phthalate [DEHP]monthly averagereport only (ug/L)all year
Di[2-ethylhexyl] phthalate [DEHP]daily maximumreport only (ug/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year
Flow, in conduit or thru treatment plantdaily maximum≤ 6048 gal/dall year
cis-1,2-Dichloroethenemonthly averagereport only (ug/L)all year
cis-1,2-Dichloroethenedaily maximum≤ 2.5 ug/Lall year
cis-1,2-Dichloroethenemonthly averagereport only (ug/L)all year
cis-1,2-Dichloroethenedaily maximumreport only (ug/L)all year
cis-1,2-Dichloroethenemonthly averagereport only (ug/L)all year
cis-1,2-Dichloroethenedaily maximumreport only (ug/L)all year

How strict are these limits?

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/RI0023639 · MCP: https://passage-data.com/mcp