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Texas Instruments Inc.

Nonferrous Rolling And Drawing, major discharger, Attleboro, Massachusetts. NPDES permit MA0001791 expired Dec 31, 2015; its limits still apply. Last 12 months: over a limit 9 times (last September 2026), 3 of 60 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 002 form A monthly (15 values), outfall 002 form B monthly (5 values), outfall 004 form A monthly (8 values), outfall 004 form Q quarterly (6 values), outfall 007 form Q quarterly (16 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 3 of 60 reports late

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

Period endingOutfallParameterReportedLimit
March 2026002pH, minimum≥ 6.16 SU≥ 6.5 SU
April 2026002pH, minimum≥ 6.25 SU≥ 6.5 SU
May 2026002pH, maximum≤ 8.56 SU≤ 8.3 SU
May 2026002pH, minimum≥ 6.22 SU≥ 6.5 SU
May 2026004pH, minimum6.24 SU≥ 6.5 SU
June 2026002pH, minimum≥ 6.21 SU≥ 6.5 SU
July 2026002pH, minimum≥ 6.15 SU≥ 6.5 SU
August 2026002pH, minimum≥ 6.46 SU≥ 6.5 SU
September 2026002pH, minimum≥ 6.21 SU≥ 6.5 SU

Limits in force (50)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6.5 SUall year002
pHminimum≥ 6.5 SUall year002
pHmaximum≤ 8.3 SUall year002
pHmaximum≤ 8.3 SUall year002
Chloroformmonthly averagereport only (ug/L)all year002
Chloroformdaily maximumreport only (ug/L)all year002
trans-1,2-Dichloroethylenedaily maximum≤ 100 ug/Lall year002
Vinyl chloridemonthly averagereport only (ug/L)all year002
Vinyl chloridedaily maximumreport only (ug/L)all year002
Trichloroethylenedaily maximum≤ 5 ug/Lall year002
Priority Pollutantstotalreport only (ug/L)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year002
Flow, in conduit or thru treatment plantmonthly average≤ 250000 gal/dall year002
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year002
cis-1,2-Dichloroethylenemonthly averagereport only (ug/L)all year002
cis-1,2-Dichloroethylenedaily maximum≤ 70 ug/Lall year002
Tetrachloroethenemonthly averagereport only (ug/L)all year002
Tetrachloroethenedaily maximumreport only (ug/L)all year002
Trichloroethenemonthly averagereport only (ug/L)all year002
Trichloroethenedaily maximum≤ 5 ug/Lall year002
pHminimum≥ 6.5 SUall year004
pHmaximum≤ 8.3 SUall year004
Chloroformmonthly averagereport only (ug/L)all year004
Chloroformdaily maximumreport only (ug/L)all year004
Vinyl chloridemonthly averagereport only (mg/L)all year004
Vinyl chloridedaily maximumreport only (mg/L)all year004
Trichloroethylenemonthly averagereport only (ug/L)all year004
Trichloroethylenedaily maximumreport only (ug/L)all year004
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year004
cis-1,2-Dichloroethylenemonthly averagereport only (ug/L)all year004
cis-1,2-Dichloroethylenedaily maximumreport only (ug/L)all year004
Trichloroethenemonthly averagereport only (ug/L)all year004
Trichloroethenedaily maximumreport only (ug/L)all year004
pHminimumreport only (SU)all year007
pHmaximumreport only (SU)all year007
Copper, total [as Cu]monthly averagereport only (ug/L)all year007
Copper, total [as Cu]daily maximumreport only (ug/L)all year007
Lead, total [as Pb]monthly averagereport only (ug/L)all year007
Lead, total [as Pb]daily maximumreport only (ug/L)all year007
Nickel, total [as Ni]monthly averagereport only (ug/L)all year007
Nickel, total [as Ni]daily maximumreport only (ug/L)all year007
Silver, total [as Ag]monthly averagereport only (ug/L)all year007
Silver, total [as Ag]maximumreport only (ug/L)all year007
Zinc, total [as Zn]monthly averagereport only (ug/L)all year007
Zinc, total [as Zn]daily maximumreport only (ug/L)all year007
Aluminum, total [as Al]monthly averagereport only (ug/L)all year007
Aluminum, total [as Al]daily maximumreport only (ug/L)all year007
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year007
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year007

How strict are these limits?

Cited limits by parameter: Massachusetts'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/MA0001791 · MCP: https://passage-data.com/mcp