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ENPRO Holdings, INC.

Motor Vehicle Parts And Accessories, Water Valley, Mississippi. NPDES permit MS0045641, in force until Mar 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (12 values), outfall 002 form A monthly (12 values), outfall 003 form A monthly (12 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 36 reports late

Limits in force (36)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Vinyl chloridemonthly average≤ 1.37 mg/Lall year001
Vinyl chloridedaily maximumreport only (mg/L)all year001
Vinyl chloridemonthly average≤ 1.11 lb/dall year001
Vinyl chloridedaily maximumreport only (lb/d)all year001
Trichloroethylenemonthly averagereport only (mg/L)all year001
Trichloroethylenedaily maximum≤ 1.08 mg/Lall year001
Trichloroethylenemonthly averagereport only (lb/d)all year001
Trichloroethylenedaily maximum≤ .87 lb/dall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Vinyl chloridemonthly average≤ .044 mg/Lall year002
Vinyl chloridedaily maximumreport only (mg/L)all year002
Vinyl chloridemonthly average≤ .126 lb/dall year002
Vinyl chloridedaily maximumreport only (lb/d)all year002
Trichloroethylenemonthly average≤ .194 mg/Lall year002
Trichloroethylenedaily maximumreport only (mg/L)all year002
Trichloroethylenemonthly average≤ .55 lb/dall year002
Trichloroethylenedaily maximumreport only (lb/d)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
pHminimum≥ 6 SUall year003
pHmaximum≤ 9 SUall year003
Vinyl chloridemonthly average≤ .044 mg/Lall year003
Vinyl chloridedaily maximumreport only (mg/L)all year003
Vinyl chloridemonthly average≤ .126 lb/dall year003
Vinyl chloridedaily maximumreport only (lb/d)all year003
Trichloroethylenemonthly average≤ .194 mg/Lall year003
Trichloroethylenedaily maximumreport only (mg/L)all year003
Trichloroethylenemonthly average≤ .55 lb/dall year003
Trichloroethylenedaily maximumreport only (lb/d)all year003
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003

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

Same industry: the 4 Transportation Equipment permits in Mississippi.

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Your permit document is the final word. As JSON: /api/v1/permits/MS0045641 · MCP: https://passage-data.com/mcp