Glenwood Springs City of

NPDES permit CO0048815 · Minor NON-POTW · expired, expires 2026-04-30 · 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 2026-04-30 and is expired: 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)
12of 44 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (190)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Nitrogen, ammonia total [as N]30DA AVG <= 3.5 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 4.4 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 4.9 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 3.5 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 2.9 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 2.4 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 3.1 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 3.3 mg/L Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 3.8 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 4.1 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 4.3 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 3.4 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 13 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 20 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 25 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 19 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 12 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 12 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 12 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 13 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 16 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 18 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 19 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Sep
001Nitrogen, inorganic totalDAILY MX <= 847715 mg/L all year
001Nitrogen, inorganic totalDAILY MX <= 10 mg/L all year
001Hardness, total [as CaCO3]30DA AVG report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Chloride [as Cl]30DA AVG report only all year
001Chloride [as Cl]DAILY MX report only all year
001Arsenic, total recoverable30DA AVG <= 3 ug/L all year
001Arsenic, total recoverableROLL AVG <= 2.7 ug/L all year
001Iron, total recoverable30DA AVG <= 1000 ug/L all year
001Iron, total recoverableROLL AVG <= 425 ug/L all year
001Nickel, total recoverable30DA AVG report only all year
001Cadmium, total recoverableDAILY MX report only all year
001Lead, total recoverableDAILY MX report only all year
001Chromium, hexavalent dissolved [as Cr]30DA AVG <= 11 ug/L all year
001Chromium, hexavalent dissolved [as Cr]DAILY MX <= 16 ug/L all year
001Zinc, potentially dissolved30DA AVG <= 428 ug/L all year
001Zinc, potentially dissolvedDAILY MX <= 564 ug/L all year
001Zinc, potentially dissolvedROLL AVG <= 64 ug/L all year
001Silver, potentially dissolved30DA AVG <= .81 ug/L all year
001Silver, potentially dissolvedDAILY MX <= 22 ug/L all year
001Silver, potentially dissolvedROLL AVG <= .12 ug/L all year
001Copper, potentially dissolved30DA AVG <= 2.23 ug/L all year
001Copper, potentially dissolvedDAILY MX <= 50 ug/L all year
001Cadmium, potentially dissolvd30DA AVG <= 3 ug/L all year
001Cadmium, potentially dissolvdDAILY MX <= 6.5 ug/L all year
001Cadmium, potentially dissolvdROLL AVG <= .41 ug/L all year
001Chromium, trivalent, potentially dissolvdDAILY MX report only all year
001Lead, potentially dissolvd30DA AVG <= 11 ug/L all year
001Lead, potentially dissolvdDAILY MX <= 281 ug/L all year
001Lead, potentially dissolvdROLL AVG <= 2 ug/L all year
001Manganese, potentially dissolvd30DA AVG <= 2618 ug/L all year
001Manganese, potentially dissolvdDAILY MX <= 4738 ug/L all year
001Manganese, potentially dissolvdROLL AVG <= 452 ug/L all year
001Nickel, potentially dissolvd30DA AVG <= 168 ug/L all year
001Nickel, potentially dissolvdDAILY MX <= 1513 ug/L all year
001Selenium, potentially dissolvd30DA AVG <= 4.6 ug/L all year
001Selenium, potentially dissolvdDAILY MX <= 18 ug/L all year
001Uranium, potentially dissolvd30DA AVG report only all year
001Uranium, potentially dissolvdDAILY MX report only all year
001Oil and greaseINST MAX <= 10 mg/L all year
001Oil and greaseROLL AVG report only all year
001Uranium, total30DA AVG report only all year
001Toluene30DA AVG report only all year
001TolueneDAILY MX report only all year
001Methylene chloride30DA AVG report only all year
001Methylene chlorideDAILY MX report only all year
001Phenol30DA AVG <= 2100 ug/L all year
001PhenolDAILY MX <= 10200 ug/L all year
001PhenolROLL AVG <= 329 ug/L all year
001Flow, in conduit or thru treatment plant30DA AVG <= .006 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Mercury, total [low level]30DA AVG report only all year
001E. coli30DA AVG <= 630 #/100mL all year
001E. coliDAILY MX <= 1260 #/100mL all year
001E. coliROLL AVG <= 95 #/100mL all year
001Sulfide-hydrogen sulfide [undissociated]30DA AVG report only all year
001Perfluorooctanoic acid (PFOA)30DA AVG report only all year
001Perfluorooctanoic acid (PFOA)DAILY MX report only all year
001Perfluorobutanoic acid (PFBA)30DA AVG report only all year
001Perfluorobutanoic acid (PFBA)DAILY MX report only all year
001Perfluorooctanesulfonamide (PFOSA)3B report only all year
001Perfluorooctanesulfonamide (PFOSA)DAILY MX report only all year
001Perfluoropentanoic acid (PFPeA)30DA AVG report only all year
001Perfluoropentanoic acid (PFPeA)DAILY MX report only all year
001Perfluorohexanoic acid (PFHxA)30DA AVG report only all year
001Perfluorohexanoic acid (PFHxA)DAILY MX report only all year
001Perfluoroheptanoic acid (PFHpA)30DA AVG report only all year
001Perfluoroheptanoic acid (PFHpA)ROLL AVG report only all year
001Perfluorononanoic acid (PFNA)30DA AVG report only all year
001Perfluorononanoic acid (PFNA)DAILY MX report only all year
001Perfluorodecanoic acid (PFDA)30DA AVG report only all year
001Perfluorodecanoic acid (PFDA)DAILY MX report only all year
001Perfluoroundecanoic acid (PFUnA)30DA AVG report only all year
001Perfluoroundecanoic acid (PFUnA)DAILY MX report only all year
001Perfluorododecanoic acid (PFDoA)30DA AVG report only all year
001Perfluorododecanoic acid (PFDoA)DAILY MX report only all year
001Perfluorotridecanoic acid (PFTrDA)30DA AVG report only all year
001Perfluorotridecanoic acid (PFTrDA)DAILY MX report only all year
001Perfluorotetradecanoic acid (PFTeDA)30DA AVG report only all year
001Perfluorotetradecanoic acid (PFTeDA)DAILY MX report only all year
001N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)30DA AVG report only all year
001N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)DAILY MX report only all year
001N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)30DA AVG report only all year
001N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)DAILY MX report only all year
001N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)30DA AVG report only all year
001N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)DAILY MX report only all year
001N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)30DA AVG report only all year
001N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)DAILY MX report only all year
001Molybdenum, potentially dissolved30DA AVG report only all year
001Perfluorobutanesulfonic acid (PFBS)30DA AVG report only all year
001Perfluorobutanesulfonic acid (PFBS)30DA AVG report only all year
001Perfluorobutanesulfonic acid (PFBS)DAILY MX report only all year
001Perfluorobutanesulfonic acid (PFBS)DAILY MX <= 400000 ng/L all year
001Perfluorodecanesulfonic acid (PFDS)30DA AVG report only all year
001Perfluorodecanesulfonic acid (PFDS)DAILY MX report only all year
001Perfluoroheptanesulfonic acid (PFHpS)30DA AVG report only all year
001Perfluoroheptanesulfonic acid (PFHpS)DAILY MX report only all year
001Perfluorohexanesulfonic acid (PFHxS)30DA AVG report only all year
001Perfluorohexanesulfonic acid (PFHxS)DAILY MX <= 70 ng/L all year
001Perfluorooctanesulfonic acid (PFOS)30DA AVG report only all year
001Perfluorooctanesulfonic acid (PFOS)DAILY MX report only all year
0011H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)30DA AVG report only all year
0011H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)DAILY MX report only all year
0011H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)30DA AVG report only all year
0011H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)DAILY MX report only all year
0011H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)30DA AVG report only all year
0011H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)DAILY MX report only all year
001Perfluoropentanesulfonic acid (PFPeS)30DA AVG report only all year
001Perfluoropentanesulfonic acid (PFPeS)DAILY MX report only all year
001Perfluorononanesulfonic acid (PFNS)30DA AVG report only all year
001Perfluorononanesulfonic acid (PFNS)DAILY MX report only all year
001Hexafluoropropylene oxide dimer acid (HFPO-DA)30DA AVG report only all year
001Hexafluoropropylene oxide dimer acid (HFPO-DA)DAILY MX report only all year
001Perfluoro-2-methoxypropanoic acid30DA AVG report only all year
001Perfluoro-2-methoxypropanoic acidDAILY MX report only all year
001Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)30DA AVG report only all year
001Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)DAILY MX report only all year
001Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)30DA AVG report only all year
001Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)DAILY MX report only all year
001Perfluorododecanesulfonic acid (PFDoS)30DA AVG report only all year
001Perfluorododecanesulfonic acid (PFDoS)DAILY MX report only all year
0014,8-Dioxa-3H-perfluorononanoic acid (ADONA)30DA AVG report only all year
0014,8-Dioxa-3H-perfluorononanoic acid (ADONA)DAILY MX report only all year
001Potassium 9-chlorohexadecafluoro-3-oxanonane-1-sulfonate30DA AVG report only all year
001Potassium 9-chlorohexadecafluoro-3-oxanonane-1-sulfonateDAILY MX report only all year
001Potassium 11-chloroeicosafluoro-3-oxaundecane-1-sulfonate30DA AVG report only all year
001Potassium 11-chloroeicosafluoro-3-oxaundecane-1-sulfonateDAILY MX report only all year
001N-methyl perfluorooctanesulfonamide (NMeFOSA)30DA AVG report only all year
001N-methyl perfluorooctanesulfonamide (NMeFOSA)DAILY MX report only all year
001N-ethyl perfluorooctanesulfonamide (NEtFOSA)30DA AVG report only all year
001N-ethyl perfluorooctanesulfonamide (NEtFOSA)DAILY MX report only all year
001Solids, total dissolvedDAILY MX report only all year
001Sulfate30DA AVG report only all year
001Boron, total30DA AVG report only all year
0011,4-Dioxane30DA AVG report only all year
001Oil and grease visualINST MAX report only all year
001PFAS Sum30DA AVG report only all year
001PFAS Sum30DA AVG <= 70 ng/L all year
001PFAS SumDAILY MX report only all year
001PFAS SumDAILY MX <= 70 ng/L all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 100 tox chronic all year
001Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only all year
001Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only all year
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 100 tox chronic all year
002BOD, 5-day, 20 deg. C30DA AVG <= 37 mg/L all year
002BOD, 5-day, 20 deg. CDAILY MX <= 140 mg/L all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspended30DA AVG <= 27 mg/L all year
002Solids, total suspendedDAILY MX <= 88 mg/L all year
002Nitrogen, ammonia total [as N]30DA AVG <= 4.9 mg/L all year
002Nitrogen, ammonia total [as N]DAILY MX <= 10 mg/L all year
002Zinc, total recoverable30DA AVG <= 110 ug/L all year
002Zinc, total recoverableDAILY MX <= 200 ug/L all year
002Phenol30DA AVG <= 15 ug/L all year
002PhenolDAILY MX <= 26 ug/L all year
002p-Cresol30DA AVG <= 14 ug/L all year
002p-CresolDAILY MX <= 25 ug/L all year
002Benzoic acids, total30DA AVG <= 71 ug/L all year
002Benzoic acids, totalDAILY MX <= 120 ug/L all year
002.alpha.-Terpineol30DA AVG <= 16 ug/L all year
002.alpha.-TerpineolDAILY MX <= 33 ug/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