MPM SILICONES, LLC

NPDES permit WV0000094 · Major NON-POTW · administratively continued, expires 2025-10-15 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2025-10-15 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
0of 71 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among WV permits in EPA's filings — check your permit).

Limits in force (372)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO AVG report only all year
001Temperature, water deg. fahrenheitDAILY MX report only all year
001Temperature, water deg. fahrenheitMO AVG report only all year
001Temperature, water deg. fahrenheitDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 1730 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 4613 lb/d all year
001pHINST MIN report only all year
001pHINST MAX report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedMO AVG <= 2480 lb/d all year
001Solids, total suspendedDAILY MX <= 7962 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG <= 12 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX <= 42 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Chloride [as Cl]MO AVG <= 1365 mg/L all year
001Chloride [as Cl]DAILY MX <= 1839 mg/L all year
001Copper, total [as Cu]MO AVG report only all year
001Copper, total [as Cu]MO AVG report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Copper, total [as Cu]MO AVG <= 54 lb/d all year
001Copper, total [as Cu]MO AVG <= 54 lb/d all year
001Copper, total [as Cu]DAILY MX <= 126 lb/d all year
001Copper, total [as Cu]DAILY MX <= 126 lb/d all year
001Nickel, total [as Ni]MO AVG report only all year
001Nickel, total [as Ni]MO AVG report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Zinc, total [as Zn]MO AVG report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Zinc, total [as Zn]MO AVG <= 39 lb/d all year
001Zinc, total [as Zn]DAILY MX <= 97 lb/d all year
001Aluminum, total recoverableMO AVG <= .8 mg/L all year
001Aluminum, total recoverableDAILY MX <= 2.7 mg/L all year
0011,2-DichloroethaneMO AVG report only all year
0011,2-DichloroethaneMO AVG report only all year
0011,2-DichloroethaneDAILY MX report only all year
0011,2-DichloroethaneDAILY MX report only all year
0011,2-DichloroethaneMO AVG <= 2.6 lb/d all year
0011,2-DichloroethaneMO AVG <= 2.6 lb/d all year
0011,2-DichloroethaneDAILY MX <= 8.1 lb/d all year
0011,2-DichloroethaneDAILY MX <= 8.1 lb/d all year
001BromoformMO AVG report only all year
001BromoformMO AVG report only all year
001BromoformDAILY MX report only all year
001BromoformDAILY MX report only all year
001Phenolics, total recoverableMO AVG report only all year
001Phenolics, total recoverableMO AVG report only all year
001Phenolics, total recoverableDAILY MX report only all year
001Phenolics, total recoverableDAILY MX report only all year
001TolueneMO AVG report only all year
001TolueneMO AVG report only all year
001TolueneDAILY MX report only all year
001TolueneDAILY MX report only all year
001TolueneMO AVG <= 1 lb/d all year
001TolueneMO AVG <= 1 lb/d all year
001TolueneDAILY MX <= 3.1 lb/d all year
001TolueneDAILY MX <= 3.1 lb/d all year
001AcrylonitrileMO AVG report only all year
001AcrylonitrileMO AVG report only all year
001AcrylonitrileDAILY MX report only all year
001AcrylonitrileDAILY MX report only all year
001AcrylonitrileMO AVG <= 3.7 lb/d all year
001AcrylonitrileMO AVG <= 3.7 lb/d all year
001AcrylonitrileDAILY MX <= 9.3 lb/d all year
001AcrylonitrileDAILY MX <= 9.3 lb/d all year
001EthylbenzeneMO AVG report only all year
001EthylbenzeneMO AVG report only all year
001EthylbenzeneDAILY MX report only all year
001EthylbenzeneDAILY MX report only all year
001EthylbenzeneMO AVG <= 1.2 lb/d all year
001EthylbenzeneMO AVG <= 1.2 lb/d all year
001EthylbenzeneDAILY MX <= 4.2 lb/d all year
001EthylbenzeneDAILY MX <= 4.2 lb/d all year
001Methyl chloride [Chloromethane]MO AVG report only all year
001Methyl chloride [Chloromethane]MO AVG report only all year
001Methyl chloride [Chloromethane]DAILY MX report only all year
001Methyl chloride [Chloromethane]DAILY MX report only all year
001Methyl chloride [Chloromethane]MO AVG <= 3.3 lb/d all year
001Methyl chloride [Chloromethane]MO AVG <= 3.3 lb/d all year
001Methyl chloride [Chloromethane]DAILY MX <= 7.3 lb/d all year
001Methyl chloride [Chloromethane]DAILY MX <= 7.3 lb/d all year
001Methylene chlorideMO AVG report only all year
001Methylene chlorideMO AVG report only all year
001Methylene chlorideDAILY MX report only all year
001Methylene chlorideDAILY MX report only all year
001Methylene chlorideMO AVG <= 1.5 lb/d all year
001Methylene chlorideMO AVG <= 1.5 lb/d all year
001Methylene chlorideDAILY MX <= 3.4 lb/d all year
001Methylene chlorideDAILY MX <= 3.4 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]MO AVG report only all year
001Di[2-ethylhexyl] phthalate [DEHP]MO AVG report only all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX report only all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX report only all year
001Di[2-ethylhexyl] phthalate [DEHP]MO AVG <= 4 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]MO AVG <= 4 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= 10.7 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= 10.7 lb/d all year
001Di-n-butyl phthalateMO AVG report only all year
001Di-n-butyl phthalateDAILY MX report only all year
001Di-n-butyl phthalateMO AVG <= 1 lb/d all year
001Di-n-butyl phthalateDAILY MX <= 2.2 lb/d all year
001Vinyl chlorideMO AVG report only all year
001Vinyl chlorideMO AVG report only all year
001Vinyl chlorideDAILY MX report only all year
001Vinyl chlorideDAILY MX report only all year
001Vinyl chlorideMO AVG <= 4 lb/d all year
001Vinyl chlorideMO AVG <= 4 lb/d all year
001Vinyl chlorideDAILY MX <= 10.3 lb/d all year
001Vinyl chlorideDAILY MX <= 10.3 lb/d all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX <= 6.5 MGD all year
001Chlorine, total residualMO AVG <= 55 ug/L all year
001Chlorine, total residualDAILY MX <= 110 ug/L all year
001Toxicity [chronic], Ceriodaphnia dubiaMO AVG report only all year
001Toxicity [chronic], Ceriodaphnia dubiaDAILY MX report only all year
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]MO AVG <= 6.5 tox chronic all year
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]DAILY MX <= 13 tox chronic all year
001Mercury, total [as Hg]MO AVG <= .05 ug/L all year
001Mercury, total [as Hg]DAILY MX <= .146 ug/L all year
001Coliform, fecal generalMO GEOMN <= 200 #/100mL all year
001Coliform, fecal generalDAILY MX <= 400 #/100mL all year
001pH range excursions, > 60 minutesDAILY MX <= 0 occur/mo all year
001pH range excursions, monthly total accumMO MAX <= 446 min all year
001ChloroethaneMO AVG report only all year
001ChloroethaneMO AVG report only all year
001ChloroethaneDAILY MX report only all year
001ChloroethaneDAILY MX report only all year
001ChloroethaneMO AVG <= 4 lb/d all year
001ChloroethaneMO AVG <= 4 lb/d all year
001ChloroethaneDAILY MX <= 10.3 lb/d all year
001ChloroethaneDAILY MX <= 10.3 lb/d all year
002Temperature, water deg. fahrenheitMO AVG report only Jan
002Temperature, water deg. fahrenheitMO AVG report only May
002Temperature, water deg. fahrenheitMO AVG report only Oct
002Temperature, water deg. fahrenheitMO AVG report only Jul
002Temperature, water deg. fahrenheitMO AVG report only Mar
002Temperature, water deg. fahrenheitMO AVG report only Dec
002Temperature, water deg. fahrenheitMO AVG report only Aug
002Temperature, water deg. fahrenheitMO AVG report only Feb
002Temperature, water deg. fahrenheitMO AVG report only Apr
002Temperature, water deg. fahrenheitMO AVG report only Jun
002Temperature, water deg. fahrenheitMO AVG report only Nov
002Temperature, water deg. fahrenheitMO AVG report only Sep
002Temperature, water deg. fahrenheitINST MAX <= 72.7 deg F Jan
002Temperature, water deg. fahrenheitINST MAX report only May
002Temperature, water deg. fahrenheitINST MAX <= 96.5 deg F Oct
002Temperature, water deg. fahrenheitINST MAX report only Jul
002Temperature, water deg. fahrenheitINST MAX <= 73.9 deg F Mar
002Temperature, water deg. fahrenheitINST MAX report only Dec
002Temperature, water deg. fahrenheitINST MAX report only Aug
002Temperature, water deg. fahrenheitINST MAX <= 69.8 deg F Feb
002Temperature, water deg. fahrenheitINST MAX report only Apr
002Temperature, water deg. fahrenheitINST MAX report only Jun
002Temperature, water deg. fahrenheitINST MAX report only Nov
002Temperature, water deg. fahrenheitINST MAX report only Sep
002Temperature, water deg. fahrenheitMO AVG report only all year
002Temperature, water deg. fahrenheitDAILY MX report only all year
002pHINST MIN report only all year
002pHINST MAX report only all year
002Solids, total suspendedMO AVG <= 85 mg/L all year
002Solids, total suspendedDAILY MX <= 138 mg/L all year
002Carbon, tot organic [TOC]MO AVG report only all year
002Carbon, tot organic [TOC]DAILY MX report only all year
002Carbon, tot organic [TOC]MO AVG report only all year
002Carbon, tot organic [TOC]DAILY MX report only all year
002Carbon, tot organic [TOC]MO AVG report only all year
002Carbon, tot organic [TOC]DAILY MX report only all year
002Carbon, tot organic [TOC]MO AVG <= 6.1 lb/d all year
002Carbon, tot organic [TOC]DAILY MX <= 8.7 lb/d all year
002Carbon, tot organic [TOC]MO AVG report only all year
002Carbon, tot organic [TOC]DAILY MX report only all year
002Carbon, tot organic [TOC]MO AVG report only all year
002Carbon, tot organic [TOC]DAILY MX report only all year
002Chloride [as Cl]MO AVG report only all year
002Chloride [as Cl]MO AVG report only all year
002Chloride [as Cl]DAILY MX report only all year
002Chloride [as Cl]DAILY MX report only all year
002Iron, total recoverableMO AVG report only all year
002Iron, total recoverableMO AVG report only all year
002Iron, total recoverableDAILY MX report only all year
002Iron, total recoverableDAILY MX report only all year
002Selenium, total recoverableMO AVG report only all year
002Selenium, total recoverableMO AVG report only all year
002Selenium, total recoverableDAILY MX report only all year
002Selenium, total recoverableDAILY MX report only all year
002Lead, total recoverableMO AVG report only all year
002Lead, total recoverableMO AVG report only all year
002Lead, total recoverableDAILY MX report only all year
002Lead, total recoverableDAILY MX report only all year
002Copper, total recoverableMO AVG <= .018 mg/L all year
002Copper, total recoverableDAILY MX <= .042 mg/L all year
002Di[2-ethylhexyl] phthalate [DEHP]MO AVG report only all year
002Di[2-ethylhexyl] phthalate [DEHP]MO AVG report only all year
002Di[2-ethylhexyl] phthalate [DEHP]DAILY MX report only all year
002Di[2-ethylhexyl] phthalate [DEHP]DAILY MX report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Chlorine, total residualMO AVG report only all year
002Chlorine, total residualMO AVG report only all year
002Chlorine, total residualDAILY MX report only all year
002Chlorine, total residualDAILY MX report only all year
002Coliform, fecal generalMO GEOMN <= 200 #/100mL all year
002Coliform, fecal generalMO GEOMN <= 200 #/100mL all year
002Coliform, fecal generalDAILY MX <= 400 #/100mL all year
002Coliform, fecal generalDAILY MX <= 400 #/100mL all year
002Chemical Oxygen Demand [COD]MO AVG report only all year
002Chemical Oxygen Demand [COD]MO AVG report only all year
002Chemical Oxygen Demand [COD]DAILY MX report only all year
002Chemical Oxygen Demand [COD]DAILY MX report only all year
002pH range excursions, > 60 minutesDAILY MX <= 0 occur/mo all year
002pH range excursions, monthly total accumDAILY MX <= 446 min all year
003pHINST MIN report only all year
003pHINST MAX report only all year
003Solids, total suspendedMO AVG report only all year
003Solids, total suspendedDAILY MX report only all year
003Cyanide, total [as CN]MO AVG report only all year
003Cyanide, total [as CN]DAILY MX report only all year
003Iron, total [as Fe]MO AVG report only all year
003Iron, total [as Fe]DAILY MX report only all year
003Aluminum, total recoverableMO AVG report only all year
003Aluminum, total recoverableDAILY MX report only all year
003Copper, total recoverableMO AVG report only all year
003Copper, total recoverableDAILY MX report only all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Chemical Oxygen Demand [COD]MO AVG report only all year
003Chemical Oxygen Demand [COD]DAILY MX report only all year
004pHINST MIN >= 6 SU all year
004pHINST MAX <= 9 SU all year
004Solids, total suspendedMO AVG report only all year
004Solids, total suspendedDAILY MX report only all year
004Carbon, tot organic [TOC]MO AVG report only all year
004Carbon, tot organic [TOC]DAILY MX report only all year
004Iron, total recoverableMO AVG report only all year
004Iron, total recoverableDAILY MX report only all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
005pHINST MIN >= 6 SU all year
005pHINST MAX <= 9 SU all year
005Solids, total suspendedMO AVG report only all year
005Solids, total suspendedDAILY MX report only all year
005Carbon, tot organic [TOC]MO AVG report only all year
005Carbon, tot organic [TOC]DAILY MX report only all year
005Iron, total recoverableMO AVG report only all year
005Iron, total recoverableDAILY MX report only all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
006pHINST MIN >= 6 SU all year
006pHINST MAX <= 9 SU all year
006Solids, total suspendedMO AVG report only all year
006Solids, total suspendedDAILY MX report only all year
006Carbon, tot organic [TOC]MO AVG report only all year
006Carbon, tot organic [TOC]DAILY MX report only all year
006Iron, total recoverableMO AVG report only all year
006Iron, total recoverableDAILY MX report only all year
006Flow, in conduit or thru treatment plantMO AVG report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
007pHINST MIN >= 6 SU all year
007pHINST MAX <= 9 SU all year
007Solids, total suspendedMO AVG report only all year
007Solids, total suspendedDAILY MX report only all year
007Carbon, tot organic [TOC]MO AVG report only all year
007Carbon, tot organic [TOC]DAILY MX report only all year
007Iron, total recoverableMO AVG report only all year
007Iron, total recoverableDAILY MX report only all year
007Flow, in conduit or thru treatment plantMO AVG report only all year
007Flow, in conduit or thru treatment plantDAILY MX report only all year
009pHINST MIN report only all year
009pHINST MAX report only all year
009Solids, total suspendedMO AVG report only all year
009Solids, total suspendedDAILY MX report only all year
009Iron, total [as Fe]MO AVG report only all year
009Iron, total [as Fe]DAILY MX report only all year
009Zinc, total recoverableMO AVG report only all year
009Zinc, total recoverableDAILY MX report only all year
009Copper, total recoverableMO AVG report only all year
009Copper, total recoverableDAILY MX report only all year
009Flow, in conduit or thru treatment plantMO AVG report only all year
009Flow, in conduit or thru treatment plantDAILY MX report only all year
011BOD, 5-day, 20 deg. CMO AVG report only all year
011BOD, 5-day, 20 deg. CDAILY MX report only all year
011pHINST MIN report only all year
011pHINST MAX report only all year
011Solids, total suspendedMO AVG report only all year
011Solids, total suspendedDAILY MX report only all year
011Cyanide, free [amenable to chlorination]MO AVG report only all year
011Cyanide, free [amenable to chlorination]DAILY MX report only all year
011Iron, total [as Fe]MO AVG report only all year
011Iron, total [as Fe]DAILY MX report only all year
011Zinc, total recoverableMO AVG report only all year
011Zinc, total recoverableDAILY MX report only all year
011Copper, total recoverableMO AVG report only all year
011Copper, total recoverableDAILY MX report only all year
011Di-n-butyl phthalateMO AVG report only all year
011Di-n-butyl phthalateDAILY MX report only all year
011Flow, in conduit or thru treatment plantMO AVG report only all year
011Flow, in conduit or thru treatment plantDAILY MX report only all year
011Chemical Oxygen Demand [COD]MO AVG report only all year
011Chemical Oxygen Demand [COD]DAILY MX report only all year
012pHINST MIN report only all year
012pHINST MAX report only all year
012Solids, total suspendedMO AVG report only all year
012Solids, total suspendedDAILY MX report only all year
012Iron, total [as Fe]MO AVG report only all year
012Iron, total [as Fe]DAILY MX report only all year
012Zinc, total recoverableMO AVG report only all year
012Zinc, total recoverableDAILY MX report only all year
012Copper, total recoverableMO AVG report only all year
012Copper, total recoverableDAILY MX report only all year
012Flow, in conduit or thru treatment plantMO AVG report only all year
012Flow, in conduit or thru treatment plantDAILY MX report only all year
013pHINST MIN report only all year
013pHINST MAX report only all year
013Solids, total suspendedMO AVG report only all year
013Solids, total suspendedDAILY MX report only all year
013Iron, total [as Fe]MO AVG report only all year
013Iron, total [as Fe]DAILY MX <= 1.5 mg/L all year
013Zinc, total recoverableMO AVG report only all year
013Zinc, total recoverableDAILY MX report only all year
013Copper, total recoverableMO AVG report only all year
013Copper, total recoverableDAILY MX report only all year
013Flow, in conduit or thru treatment plantMO AVG report only all year
013Flow, in conduit or thru treatment plantDAILY MX report only all year
014pHINST MIN report only all year
014pHINST MAX report only all year
014Solids, total suspendedMO AVG report only all year
014Solids, total suspendedDAILY MX report only all year
014Iron, total [as Fe]MO AVG report only all year
014Iron, total [as Fe]DAILY MX <= 1.5 mg/L all year
014Zinc, total recoverableMO AVG report only all year
014Zinc, total recoverableDAILY MX report only all year
014Flow, in conduit or thru treatment plantMO AVG report only all year
014Flow, in conduit or thru treatment plantDAILY MX report only all year
015pHINST MIN report only all year
015pHINST MAX report only all year
015Solids, total suspendedMO AVG report only all year
015Solids, total suspendedDAILY MX report only all year
015Iron, total [as Fe]MO AVG report only all year
015Iron, total [as Fe]DAILY MX report only all year
015Zinc, total recoverableMO AVG report only all year
015Zinc, total recoverableDAILY MX report only all year
015Copper, total recoverableMO AVG report only all year
015Copper, total recoverableDAILY MX report only all year
015Flow, in conduit or thru treatment plantMO AVG report only all year
015Flow, in conduit or thru treatment plantDAILY MX report only all year
016pHINST MIN report only all year
016pHINST MAX report only all year
016Solids, total suspendedMO AVG report only all year
016Solids, total suspendedDAILY MX report only all year
016Iron, total [as Fe]MO AVG report only all year
016Iron, total [as Fe]DAILY MX report only all year
016Zinc, total recoverableMO AVG report only all year
016Zinc, total recoverableDAILY MX report only all year
016Flow, in conduit or thru treatment plantMO AVG report only all year
016Flow, in conduit or thru treatment plantDAILY MX report only all year
018pHINST MIN report only all year
018pHINST MAX report only all year
018Solids, total suspendedMO AVG report only all year
018Solids, total suspendedDAILY MX report only all year
018Iron, total [as Fe]MO AVG report only all year
018Iron, total [as Fe]DAILY MX <= 1.5 mg/L all year
018Zinc, total recoverableMO AVG report only all year
018Zinc, total recoverableDAILY MX report only all year
018Copper, total recoverableMO AVG report only all year
018Copper, total recoverableDAILY MX report only all year
018Flow, in conduit or thru treatment plantMO AVG report only all year
018Flow, in conduit or thru treatment plantDAILY MX report only all year

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