La Junta City of

NPDES permit CO0021261 · Major POTW · administratively continued, expires 2024-09-30 · 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 2024-09-30 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

13values over a limit
0required values missing, on 0 form(s)
0of 66 forms filed late

Last period with anything received: 2026-07-31. Most often over: Conductivity (9), Static Renewal 7 Day Chronic Ceriodaphnia dubia (3), Solids, total suspended (1).

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 (158)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CMX 7D AV <= 45 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspended30DA AVG <= 30 mg/L all year
001Solids, total suspendedMX 7D AV <= 45 mg/L all year
001Cyanide, total [as CN]DAILY MX 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
001Lead, total [as Pb]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
001Selenium, total [as Se]DAILY MX report only all year
001Selenium, potentially dissolvd30DA AVG report only all year
001Selenium, potentially dissolvdDAILY MX report only all year
001Oil and greaseINST MAX <= 10 mg/L all year
001Total phenolsDAILY MX report only all year
001Flow, in conduit or thru treatment plant30DA AVG <= 1.65 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualINST MAX <= .5 mg/L all year
001Mercury, total [as Hg]DAILY MX report only all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Oil and grease visualINST MAX report only all year
002Flow, in conduit or thru treatment plant30DA AVG <= 2.5 MGD all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
003Temperature, water deg. centigradeMX WK AV report only all year
003Temperature, water deg. centigradeDAILY MX report only all year
003Conductivity30DA AVG <= 2.1 dS/m all year
003Conductivity30DA AVG <= 3 dS/m all year
003pHMINIMUM >= 6.5 SU all year
003pHMAXIMUM <= 9 SU all year
003Bicarbonate ion- [as HCO3]30DA AVG report only all year
003Bicarbonate ion- [as HCO3]DAILY MX report only all year
003Nitrogen, ammonia total [as N]30DA AVG <= 9.7 mg/L Apr
003Nitrogen, ammonia total [as N]30DA AVG <= 8.5 mg/L Feb
003Nitrogen, ammonia total [as N]30DA AVG <= 14 mg/L Jan
003Nitrogen, ammonia total [as N]30DA AVG <= 7.2 mg/L May
003Nitrogen, ammonia total [as N]30DA AVG <= 5.4 mg/L Jun
003Nitrogen, ammonia total [as N]30DA AVG <= 5.2 mg/L Jul
003Nitrogen, ammonia total [as N]30DA AVG <= 6.3 mg/L Aug
003Nitrogen, ammonia total [as N]30DA AVG <= 9.6 mg/L Dec
003Nitrogen, ammonia total [as N]30DA AVG <= 8.4 mg/L Mar
003Nitrogen, ammonia total [as N]30DA AVG <= 8.5 mg/L Oct
003Nitrogen, ammonia total [as N]30DA AVG <= 8.3 mg/L Nov
003Nitrogen, ammonia total [as N]30DA AVG <= 7.3 mg/L Sep
003Nitrogen, ammonia total [as N]DAILY MX <= 28 mg/L Apr
003Nitrogen, ammonia total [as N]DAILY MX <= 23 mg/L Feb
003Nitrogen, ammonia total [as N]DAILY MX <= 26 mg/L Jan
003Nitrogen, ammonia total [as N]DAILY MX <= 26 mg/L May
003Nitrogen, ammonia total [as N]DAILY MX <= 34 mg/L Jun
003Nitrogen, ammonia total [as N]DAILY MX <= 25 mg/L Jul
003Nitrogen, ammonia total [as N]DAILY MX <= 35 mg/L Aug
003Nitrogen, ammonia total [as N]DAILY MX <= 16 mg/L Dec
003Nitrogen, ammonia total [as N]DAILY MX <= 24 mg/L Mar
003Nitrogen, ammonia total [as N]DAILY MX <= 27 mg/L Oct
003Nitrogen, ammonia total [as N]DAILY MX <= 22 mg/L Nov
003Nitrogen, ammonia total [as N]DAILY MX <= 28 mg/L Sep
003Cyanide, weak acid, dissociableDAILY MX report only all year
003Calcium, total recoverable30DA AVG report only all year
003Calcium, total recoverableDAILY MX report only all year
003Magnesium, total recoverable30DA AVG report only all year
003Magnesium, total recoverableDAILY MX report only all year
003Sodium, total recoverable30DA AVG report only all year
003Sodium, total recoverableDAILY MX report only all year
003Sodium adsorption ratio30DA AVG report only all year
003Sodium adsorption ratioDAILY MX report only all year
003Sodium adsorption ratio30DA AVG report only all year
003Sodium adsorption ratioDAILY MX report only all year
003Chloride [as Cl]30DA AVG report only all year
003Arsenic, total recoverable30DA AVG report only all year
003Arsenic, total recoverable30DA AVG <= 5.4 ug/L all year
003Iron, total recoverable30DA AVG report only all year
003Selenium, total recoverable30DA AVG report only all year
003Zinc, total recoverable30DA AVG report only all year
003Cadmium, total recoverable30DA AVG report only all year
003Lead, total recoverable30DA AVG report only all year
003Copper, total recoverable30DA AVG report only all year
003Molybdenum, total recoverable30DA AVG report only all year
003Chromium, hexavalent dissolved [as Cr]30DA AVG report only all year
003Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
003Zinc, potentially dissolved30DA AVG report only all year
003Zinc, potentially dissolvedDAILY MX report only all year
003Silver, potentially dissolved30DA AVG report only all year
003Silver, potentially dissolvedDAILY MX report only all year
003Copper, potentially dissolved30DA AVG report only all year
003Copper, potentially dissolvedDAILY MX report only all year
003Arsenic, potentially dissolvedDAILY MX report only all year
003Cadmium, potentially dissolvd30DA AVG report only all year
003Cadmium, potentially dissolvdDAILY MX report only all year
003Chromium, trivalent, potentially dissolvd30DA AVG report only all year
003Chromium, trivalent, potentially dissolvdDAILY MX report only all year
003Lead, potentially dissolvd30DA AVG report only all year
003Lead, potentially dissolvdDAILY MX report only all year
003Manganese, potentially dissolvd30DA AVG report only all year
003Manganese, potentially dissolvdDAILY MX report only all year
003Nickel, potentially dissolvd30DA AVG report only all year
003Nickel, potentially dissolvdDAILY MX report only all year
003Selenium, potentially dissolvd30DA AVG report only all year
003Selenium, potentially dissolvdDAILY MX report only all year
003Selenium, potentially dissolvdROLL AVG <= .37 lb/d all year
003Oil and greaseINST MAX <= 10 mg/L all year
003Chromium, trivalent total recoverable30DA AVG report only all year
003Chromium, trivalent total recoverableDAILY MX report only all year
003Radium 226 + radium 228, total30DA AVG report only all year
003Uranium, total30DA AVG report only all year
003Flow, in conduit or thru treatment plant30DA AVG <= 4.15 MGD all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Chlorine, total residual30DA AVG <= .028 mg/L all year
003Chlorine, total residualINST MAX <= .031 mg/L all year
003Mercury, total [low level]30DA AVG <= .025 ug/L all year
003E. coli30DA GM <= 126 #/100mL all year
003E. coliMX 7D GM <= 252 #/100mL all year
003Sulfide-hydrogen sulfide [undissociated]30DA AVG <= .37 mg/L all year
003Sulfide-hydrogen sulfide [undissociated]30DA AVG <= .0051 mg/L all year
003Nonylphenol30DA AVG report only all year
003NonylphenolDAILY MX report only all year
003Sodium Absorption RatioDAILY MX report only all year
003Chromium, hexavalent tot recoverable30DA AVG report only all year
003Boron, total30DA AVG report only all year
003Oil and grease visualINST MAX report only all year
003Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only all year
003Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only all year
003Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 100 tox chronic all year
003Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only all year
003Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only all year
003Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 100 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
300Selenium, potentially dissolvd30DA AVG report only all year
300Selenium, potentially dissolvdDAILY 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
UST1Temperature, water deg. centigradeMX WK AV report only all year
UST1Temperature, 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