South Platte Renew

NPDES permit CO0032999 · Major POTW · administratively continued, expires 2022-11-30 · 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 2022-11-30 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 70 forms filed late

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

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among CO permits in EPA's filings — check your permit).

Limits in force (256)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMX WK AV report only Jan, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001Temperature, water deg. centigradeMX WK AV report only Jan, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001Temperature, water deg. centigradeDAILY MX report only Jan, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001Temperature, water deg. centigradeDAILY MX report only Jan, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001Temperature, water deg. centigradeMX WK AV report only Feb
001Temperature, water deg. centigradeMX WK AV report only Feb
001Temperature, water deg. centigradeDAILY MX report only Feb
001Temperature, water deg. centigradeDAILY MX report only Feb
001Temperature, water deg. centigradeMX WK AV report only Feb
001Temperature, water deg. centigradeMX WK AV report only Feb
001Temperature, water deg. centigradeDAILY MX report only Feb
001Temperature, water deg. centigradeDAILY MX report only Feb
001pHMINIMUM >= 6.5 SU all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspended30DA AVG <= 30 mg/L all year
001Solids, total suspended30DA AVG <= 30 mg/L all year
001Solids, total suspendedMX 7D AV <= 45 mg/L all year
001Solids, total suspendedMX 7D AV <= 45 mg/L all year
001Nitrogen, ammonia total [as N]30DA AVG <= 7 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 8.7 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 8.5 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 5.9 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 4.2 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 4.4 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 6.6 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 7.3 mg/L Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 7 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 6.3 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 5.3 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 4.1 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 5.3 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 6.5 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 7.6 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 4.3 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 3.3 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 4.5 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 3.8 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 6.4 mg/L Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 6.2 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 3.3 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 4.1 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 5.3 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 17 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 21 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 17 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 29 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 30 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 32 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 23 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 18 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 <= 18 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 24 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 14 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 19 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 23 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 28 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 19 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 29 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 16 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 14 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 19 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 16 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 16 mg/L Nov
001Nitrogen, inorganic totalDAILY MX <= 47.9 mg/L Jun
001Nitrogen, inorganic totalDAILY MX <= 46.5 mg/L Aug
001Nitrogen, inorganic totalDAILY MX <= 29.3 mg/L Dec
001Nitrogen, inorganic totalDAILY MX <= 24.8 mg/L Jan
001Nitrogen, inorganic totalDAILY MX <= 24.5 mg/L Feb
001Nitrogen, inorganic totalDAILY MX <= 28.5 mg/L Nov
001Nitrogen, inorganic totalDAILY MX <= 27.1 mg/L Apr
001Nitrogen, inorganic totalDAILY MX <= 36.2 mg/L Sep
001Nitrogen, inorganic totalDAILY MX <= 32.9 mg/L Oct
001Nitrogen, inorganic totalDAILY MX <= 44.8 mg/L May
001Nitrogen, inorganic totalDAILY MX <= 23.5 mg/L Mar
001Nitrogen, inorganic totalDAILY MX <= 42.2 mg/L Jul
001Nitrogen, inorganic totalDAILY MX <= 39.1 mg/L Jun
001Nitrogen, inorganic totalDAILY MX <= 39.9 mg/L Aug
001Nitrogen, inorganic totalDAILY MX <= 23.2 mg/L Feb
001Nitrogen, inorganic totalDAILY MX <= 23.4 mg/L Jan
001Nitrogen, inorganic totalDAILY MX <= 26.5 mg/L Dec
001Nitrogen, inorganic totalDAILY MX <= 24.7 mg/L Apr
001Nitrogen, inorganic totalDAILY MX <= 25.7 mg/L Nov
001Nitrogen, inorganic totalDAILY MX <= 29.4 mg/L Oct
001Nitrogen, inorganic totalDAILY MX <= 32.6 mg/L Sep
001Nitrogen, inorganic totalDAILY MX <= 36.3 mg/L May
001Nitrogen, inorganic totalDAILY MX <= 22.6 mg/L Mar
001Nitrogen, inorganic totalDAILY MX <= 36.9 mg/L Jul
001Nitrogen, inorganic totalDAILY MX <= 13629 lb/d Jun
001Nitrogen, inorganic totalDAILY MX <= 13203 lb/d Aug
001Nitrogen, inorganic totalDAILY MX <= 8320 lb/d Dec
001Nitrogen, inorganic totalDAILY MX <= 7042 lb/d Jan
001Nitrogen, inorganic totalDAILY MX <= 6956 lb/d Feb
001Nitrogen, inorganic totalDAILY MX <= 8120 lb/d Nov
001Nitrogen, inorganic totalDAILY MX <= 7013 lb/d Apr
001Nitrogen, inorganic totalDAILY MX <= 10278 lb/d Sep
001Nitrogen, inorganic totalDAILY MX <= 9398 lb/d Oct
001Nitrogen, inorganic totalDAILY MX <= 12749 lb/d May
001Nitrogen, inorganic totalDAILY MX <= 6673 lb/d Mar
001Nitrogen, inorganic totalDAILY MX <= 11982 lb/d Jul
001Nitrogen, inorganic totalDAILY MX <= 16325 lb/d Jun
001Nitrogen, inorganic totalDAILY MX <= 16660 lb/d Aug
001Nitrogen, inorganic totalDAILY MX <= 9687 lb/d Feb
001Nitrogen, inorganic totalDAILY MX <= 9771 lb/d Jan
001Nitrogen, inorganic totalDAILY MX <= 11065 lb/d Dec
001Nitrogen, inorganic totalDAILY MX <= 10313 lb/d Apr
001Nitrogen, inorganic totalDAILY MX <= 10732 lb/d Nov
001Nitrogen, inorganic totalDAILY MX <= 12275 lb/d Oct
001Nitrogen, inorganic totalDAILY MX <= 13611 lb/d Sep
001Nitrogen, inorganic totalDAILY MX <= 15157 lb/d May
001Nitrogen, inorganic totalDAILY MX <= 9467 lb/d Mar
001Nitrogen, inorganic totalDAILY MX <= 15408 lb/d Jul
001Nitrogen, inorganic totalRM report only all year
001Nitrogen, inorganic totalRM report only all year
001Nitrogen, inorganic total95th % report only all year
001Nitrogen, inorganic total95th % report only all year
001Phosphorus, total [as P]RM report only all year
001Phosphorus, total [as P]RM report only all year
001Phosphorus, total [as P]95th % report only all year
001Phosphorus, total [as P]95th % report only all year
001Carbon, tot organic [TOC]30DA AVG report only all year
001Carbon, tot organic [TOC]30DA AVG report only all year
001Cyanide, weak acid, dissociableDAILY MX report only all year
001Cyanide, weak acid, dissociableDAILY MX report only all year
001Cyanide, total [as CN]DAILY MX report only all year
001Chloride [as Cl]30DA AVG report only all year
001Chloride [as Cl]30DA AVG report only Mar, Jun, Sep, Dec
001Chloride [as Cl]30DA AVG <= 286 mg/L Mar, Jun, Sep, Dec
001Chloride [as Cl]30DA AVG report only all year
001Chloride [as Cl]ROLL AVG report only all year
001Chloride [as Cl]ROLL AVG report only Mar, Jun, Sep, Dec
001Arsenic, total recoverable30DA AVG report only all year
001Arsenic, total recoverable30DA AVG report only all year
001Iron, total recoverable30DA AVG <= 1228 ug/L all year
001Iron, total recoverable30DA AVG <= 1155 ug/L all year
001Iron, total recoverableROLL AVG report only all year
001Iron, total recoverableROLL AVG report only all year
001Arsenic, total [as As]DAILY MX report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Iron, dissolved [as Fe]30DA AVG <= 399 ug/L all year
001Iron, dissolved [as Fe]30DA AVG <= 367 ug/L all year
001Lead, total [as Pb]DAILY MX report only all year
001Manganese, dissolved [as Mn]30DA AVG report only all year
001Manganese, dissolved [as Mn]DAILY MX report only all year
001Molybdenum, total [as Mo]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Silver, total [as Ag]DAILY MX report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Aluminum, total recoverable30DA AVG <= 1926 ug/L all year
001Aluminum, total recoverable30DA AVG <= 1779 ug/L all year
001Aluminum, total recoverableDAILY MX <= 12876 ug/L all year
001Aluminum, total recoverableDAILY MX <= 11983 ug/L all year
001Aluminum, total recoverableROLL AVG report only all year
001Aluminum, total recoverableROLL AVG report only all year
001Selenium, total [as Se]DAILY MX report only all year
001Chromium, hexavalent dissolved [as Cr]30DA AVG report only all year
001Chromium, hexavalent dissolved [as Cr]30DA AVG report only all year
001Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
001Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
001Silver, potentially dissolvedROLL AVG report only all year
001Copper, potentially dissolved30DA AVG report only all year
001Copper, potentially dissolved30DA AVG report only all year
001Copper, potentially dissolvedDAILY MX report only all year
001Copper, potentially dissolvedDAILY MX report only all year
001Copper, potentially dissolvedROLL AVG report only all year
001Copper, potentially dissolvedROLL AVG <= 12.6 ug/L all year
001Copper, potentially dissolvedROLL AVG report only all year
001Copper, potentially dissolvedROLL AVG <= 12.6 ug/L all year
001Cadmium, potentially dissolvdROLL AVG report only all year
001Cadmium, potentially dissolvdROLL AVG report only all year
001Selenium, potentially dissolvd30DA AVG report only all year
001Selenium, potentially dissolvd30DA AVG report only all year
001Selenium, potentially dissolvdROLL AVG report only all year
001Selenium, potentially dissolvdROLL AVG report only all year
001Oil and greaseINST MAX <= 10 mg/L all year
001Oil and greaseINST MAX <= 10 mg/L all year
001Total phenolsDAILY MX report only all year
001Uranium, total30DA AVG <= 30 ug/L all year
001Uranium, total30DA AVG <= 30 ug/L all year
001Flow, in conduit or thru treatment plant30DA AVG <= 34 MGD all year
001Flow, in conduit or thru treatment plant30DA AVG <= 50 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residual30DA AVG <= .016 mg/L all year
001Chlorine, total residual30DA AVG <= .014 mg/L all year
001Chlorine, total residualINST MAX <= .025 mg/L all year
001Chlorine, total residualINST MAX <= .023 mg/L all year
001Chlorine, total residualROLL AVG <= .0025 mg/L all year
001Chlorine, total residualROLL AVG <= .0022 mg/L all year
001Mercury, total low level30DA AVG report only all year
001Mercury, total low levelROLL AVG report only all year
001Mercury, total low levelROLL AVG report only all year
001E. coli30DA GM <= 126 #/100mL all year
001E. coli30DA GM <= 126 #/100mL all year
001E. coliMX 7D GM <= 252 #/100mL all year
001E. coliMX 7D GM <= 252 #/100mL all year
001Nonylphenol30DA AVG report only all year
001NonylphenolDAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 25 mg/L all year
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 25 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MX 7D AV <= 40 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MX 7D AV <= 40 mg/L all year
001BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
001BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Sulfate30DA AVG report only all year
001Sulfate30DA AVG report only all year
001Oil and grease visualINST MAX report only all year
001Oil and grease visualINST MAX report only 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 report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 69 tox chronic all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 76 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 report only all year
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only all year
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 69 tox chronic all year
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 76 tox chronic all year
300Plant capacity fact. percent of capacity30DA AVG report only all year
300Plant capacity fact. percent of capacity30DA AVG report only all year
300BOD, 5-day, 20 deg. C30DA AVG report only all year
300BOD, 5-day, 20 deg. CMX 7D AV report only all year
300BOD, 5-day, 20 deg. C30DA AVG report only all year
300BOD, 5-day, 20 deg. CMX 7D AV report only all year
300Solids, total suspended30DA AVG report only all year
300Solids, total suspendedMX 7D AV report only all year
300Cyanide, total [as CN]DAILY MX report only all year
300Arsenic, total [as As]DAILY MX report only all year
300Cadmium, total [as Cd]DAILY MX report only all year
300Chromium, total [as Cr]DAILY MX report only all year
300Copper, total [as Cu]DAILY MX report only all year
300Lead, total [as Pb]DAILY MX report only all year
300Molybdenum, total [as Mo]DAILY MX report only all year
300Nickel, total [as Ni]DAILY MX report only all year
300Silver, total [as Ag]DAILY MX report only all year
300Zinc, total [as Zn]DAILY MX report only all year
300Selenium, total [as Se]DAILY MX report only all year
300Total phenolsDAILY MX report only all year
300Flow, in conduit or thru treatment plant30DA AVG report only all year
300Flow, in conduit or thru treatment plantDAILY MX report only all year
300Mercury, total [as Hg]DAILY MX report only all year
300BOD, carbonaceous [5 day, 20 C]30DA AVG report only all year
300BOD, carbonaceous [5 day, 20 C]MX 7D AV report only all year
USTTemperature, water deg. centigradeMX WK AV report only all year
USTTemperature, water deg. centigradeDAILY MX report only 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