MALDEN PSD

NPDES permit WV0050610 · Major POTW · effective, expires 2031-05-18 · 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.

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

0values over a limit
0required values missing, on 0 form(s)
0of 49 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 (122)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CMO AVG <= 20 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CDAILY MX <= 40 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CDAILY MX <= 60 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 333.6 lb/d May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMO AVG <= 500.4 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CDAILY MX <= 667.2 lb/d May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CDAILY MX <= 1000.8 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 60 mg/L all year
001Solids, total suspendedMO AVG <= 500.4 lb/d all year
001Solids, total suspendedDAILY MX <= 1000.8 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG <= 13 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX <= 26 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 216.7 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX <= 433.7 lb/d all year
001Arsenic, total [as As]MO AVG report only all year
001Arsenic, total [as As]DAILY MX report only all year
001Chromium, hexavalent [as Cr]MO AVG report only all year
001Chromium, hexavalent [as Cr]DAILY MX report only all year
001Nickel, total recoverableMO AVG report only all year
001Nickel, total recoverableDAILY MX report only all year
001Silver total recoverableMO AVG report only all year
001Silver total recoverableDAILY MX report only all year
001Zinc, total recoverableMO AVG report only all year
001Zinc, total recoverableDAILY MX report only all year
001Cadmium, total recoverableMO AVG report only all year
001Cadmium, total recoverableDAILY MX report only all year
001Lead, total recoverableMO AVG report only all year
001Lead, total recoverableDAILY MX report only all year
001Copper, total recoverableMO AVG report only all year
001Copper, total recoverableDAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG <= .028 mg/L all year
001Chlorine, total residualDAILY MX <= .057 mg/L all year
001Toxicity [acute], Ceriodaphnia dubiaMO AVG report only all year
001Toxicity [acute], Ceriodaphnia dubiaDAILY MX report only all year
001Toxicity [acute], Pimephales promelas [Fathead Minnow]MO AVG report only all year
001Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX report only all year
001Mercury, total [as Hg]MO AVG report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Coliform, fecal generalMO GEOMN <= 200 #/100mL all year
001Coliform, fecal generalDAILY MX <= 400 #/100mL all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
003BOD, 5-day, 20 deg. CMO AVG report only all year
003BOD, 5-day, 20 deg. CDAILY MX report only 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
003Oil and grease, hexane extr methodMO AVG report only all year
003Oil and grease, hexane extr methodDAILY MX report only all year
003Nitrogen, ammonia total [as N]MO AVG report only all year
003Nitrogen, ammonia total [as N]DAILY 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
003Coliform, fecal generalMO GEOMN report only all year
003Coliform, fecal generalDAILY MX <= 400 #/100mL all year
004BOD, 5-day, 20 deg. CMO AVG report only all year
004BOD, 5-day, 20 deg. CDAILY MX report only all year
004pHINST MIN report only all year
004pHINST MAX report only all year
004Solids, total suspendedMO AVG report only all year
004Solids, total suspendedDAILY MX report only all year
004Oil and grease, hexane extr methodMO AVG report only all year
004Oil and grease, hexane extr methodDAILY MX report only all year
004Nitrogen, ammonia total [as N]MO AVG report only all year
004Nitrogen, ammonia total [as N]DAILY 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
004Coliform, fecal generalMO GEOMN report only all year
004Coliform, fecal generalDAILY MX <= 400 #/100mL all year
005BOD, 5-day, 20 deg. CMO AVG report only all year
005BOD, 5-day, 20 deg. CDAILY MX report only all year
005pHINST MIN report only all year
005pHINST MAX report only all year
005Solids, total suspendedMO AVG report only all year
005Solids, total suspendedDAILY MX report only all year
005Oil and grease, hexane extr methodMO AVG report only all year
005Oil and grease, hexane extr methodDAILY MX report only all year
005Nitrogen, ammonia total [as N]MO AVG report only all year
005Nitrogen, ammonia total [as N]DAILY 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
005Coliform, fecal generalMO GEOMN report only all year
005Coliform, fecal generalDAILY MX <= 400 #/100mL all year
006BOD, 5-day, 20 deg. CMO AVG report only all year
006BOD, 5-day, 20 deg. CDAILY MX report only all year
006pHINST MIN report only all year
006pHINST MAX report only all year
006Solids, total suspendedMO AVG report only all year
006Solids, total suspendedDAILY MX report only all year
006Oil and grease, hexane extr methodMO AVG report only all year
006Oil and grease, hexane extr methodDAILY MX report only all year
006Nitrogen, ammonia total [as N]MO AVG report only all year
006Nitrogen, ammonia total [as N]DAILY 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
006Coliform, fecal generalMO GEOMN report only all year
006Coliform, fecal generalDAILY MX <= 400 #/100mL all year
IU01Flow rateMO AVG report only all year
IU01Flow rateDAILY MX <= 1000 gal/d all year
IU01pHINST MIN >= 5 SU all year
IU01pHINST MAX <= 10 SU all year
IU01Solids, total suspendedMO AVG report only all year
IU01Solids, total suspendedDAILY MX <= 130 mg/L all year
IU01Oil and grease, hexane extr methodMO AVG report only all year
IU01Oil and grease, hexane extr methodDAILY MX <= 30 mg/L all year
IU02Flow rateMO AVG report only all year
IU02Flow rateDAILY MX <= 2000 gal/d all year
IU02BOD, 5-day, 20 deg. CMO AVG report only all year
IU02BOD, 5-day, 20 deg. CDAILY MX <= 2500 mg/L all year
IU02pHINST MIN >= 5 SU all year
IU02pHINST MAX <= 10 SU all year
IU02Solids, total suspendedMO AVG report only all year
IU02Solids, total suspendedDAILY MX <= 2000 mg/L all year
IU02Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
IU02Nitrogen, Kjeldahl, total [as N]DAILY MX <= 450 mg/L all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states