Las Animas City of

NPDES permit CO0040690 · Minor POTW · expired, expires 2026-01-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2026-01-31 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

31values over a limit
0required values missing, on 0 form(s)
0of 64 forms filed late

Last period with anything received: 2026-07-31. Most often over: Sulfate (11), Uranium, total (10), Nitrogen, ammonia total [as N] (9).

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 (220)

OutfallParameterStatisticLimitMonths
003pHMINIMUM >= 6.5 SU all year
003pHMAXIMUM <= 9 SU all year
003Solids, total suspended30DA AVG <= 30 mg/L all year
003Solids, total suspendedMX 7D AV <= 45 mg/L all year
003Nitrogen, inorganic totalDAILY MX report only all year
003Cyanide, weak acid, dissociableDAILY MX report only all year
003Chloride [as Cl]30DA AVG report only all year
003Arsenic, total recoverable30DA AVG report only all year
003Iron, total recoverable30DA AVG report only all year
003Iron, dissolved [as Fe]30DA AVG report only all year
003Manganese, dissolved [as Mn]30DA AVG report only all year
003Nickel, total recoverable30DA AVG report only all year
003Cadmium, total recoverableDAILY MX report only all year
003Lead, total recoverableDAILY MX 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
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
003Oil and greaseINST MAX <= 10 mg/L 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 <= .76 MGD all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Chlorine, total residual30DA AVG report only all year
003Chlorine, total residualINST MAX report only all year
003Mercury, total [low level]30DA AVG report only all year
003E. coli30DA GM report only all year
003E. coliMX 7D GM report only all year
003Sulfide-hydrogen sulfide [undissociated]3B report only all year
003Nonylphenol3B report only all year
003NonylphenolDAILY MX report only all year
003Sulfate30DA AVG report only all year
003Oil and grease visualINST MAX report only all year
004BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L all year
004BOD, 5-day, 20 deg. CMX 7D AV report only all year
004pHMINIMUM >= 6.5 SU all year
004pHMAXIMUM <= 9 SU all year
004Solids, total suspended30DA AVG <= 75 mg/L all year
004Solids, total suspendedMX 7D AV <= 110 mg/L all year
004Nitrogen, ammonia total [as N]30DA AVG report only Jan
004Nitrogen, ammonia total [as N]30DA AVG report only Feb
004Nitrogen, ammonia total [as N]30DA AVG report only Mar
004Nitrogen, ammonia total [as N]30DA AVG report only Apr
004Nitrogen, ammonia total [as N]30DA AVG report only May
004Nitrogen, ammonia total [as N]30DA AVG report only Jun
004Nitrogen, ammonia total [as N]30DA AVG report only Jul
004Nitrogen, ammonia total [as N]30DA AVG report only Aug
004Nitrogen, ammonia total [as N]30DA AVG report only Sep
004Nitrogen, ammonia total [as N]30DA AVG report only Oct
004Nitrogen, ammonia total [as N]30DA AVG report only Nov
004Nitrogen, ammonia total [as N]30DA AVG report only Dec
004Nitrogen, ammonia total [as N]30DA AVG <= 55 mg/L all year
004Nitrogen, ammonia total [as N]30DA AVG <= 28 mg/L Feb
004Nitrogen, ammonia total [as N]30DA AVG <= 21 mg/L Mar
004Nitrogen, ammonia total [as N]30DA AVG <= 18 mg/L Apr
004Nitrogen, ammonia total [as N]30DA AVG <= 26 mg/L May
004Nitrogen, ammonia total [as N]30DA AVG <= 11 mg/L Jun
004Nitrogen, ammonia total [as N]30DA AVG <= 19 mg/L Jul
004Nitrogen, ammonia total [as N]30DA AVG <= 12 mg/L Aug
004Nitrogen, ammonia total [as N]30DA AVG <= 43 mg/L Sep
004Nitrogen, ammonia total [as N]30DA AVG <= 24 mg/L Oct
004Nitrogen, ammonia total [as N]30DA AVG <= 20 mg/L Nov
004Nitrogen, ammonia total [as N]30DA AVG <= 28 mg/L Dec
004Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Jan
004Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Feb
004Nitrogen, ammonia total [as N]DAILY MX <= 48 mg/L Mar
004Nitrogen, ammonia total [as N]DAILY MX <= 51 mg/L Apr
004Nitrogen, ammonia total [as N]DAILY MX <= 54 mg/L May
004Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Jun
004Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Jul
004Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Aug
004Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Sep
004Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Oct
004Nitrogen, ammonia total [as N]DAILY MX <= 41 mg/L Nov
004Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Dec
004Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L all year
004Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Feb
004Nitrogen, ammonia total [as N]DAILY MX <= 48 mg/L Mar
004Nitrogen, ammonia total [as N]DAILY MX <= 51 mg/L Apr
004Nitrogen, ammonia total [as N]DAILY MX <= 54 mg/L May
004Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Jun
004Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Jul
004Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Aug
004Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Sep
004Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Oct
004Nitrogen, ammonia total [as N]DAILY MX <= 41 mg/L Nov
004Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Dec
004Nitrogen, inorganic totalDAILY MX report only all year
004Cyanide, weak acid, dissociableDAILY MX report only all year
004Chloride [as Cl]30DA AVG report only all year
004Arsenic, total recoverable30DA AVG report only all year
004Iron, total recoverable30DA AVG report only all year
004Iron, dissolved [as Fe]30DA AVG report only all year
004Manganese, dissolved [as Mn]30DA AVG report only all year
004Nickel, total recoverable30DA AVG report only all year
004Cadmium, total recoverableDAILY MX report only all year
004Lead, total recoverableDAILY MX report only all year
004Molybdenum, total recoverable30DA AVG report only all year
004Chromium, hexavalent dissolved [as Cr]30DA AVG report only all year
004Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
004Zinc, potentially dissolved30DA AVG report only all year
004Zinc, potentially dissolvedDAILY MX report only all year
004Silver, potentially dissolved3B report only all year
004Silver, potentially dissolvedDAILY MX report only all year
004Copper, potentially dissolved30DA AVG report only all year
004Copper, potentially dissolvedDAILY MX report only all year
004Arsenic, potentially dissolvedDAILY MX report only all year
004Cadmium, potentially dissolvd30DA AVG report only all year
004Cadmium, potentially dissolvdDAILY MX report only all year
004Chromium, trivalent, potentially dissolvd30DA AVG report only all year
004Lead, potentially dissolvd30DA AVG report only all year
004Lead, potentially dissolvdDAILY MX report only all year
004Manganese, potentially dissolvd30DA AVG report only all year
004Manganese, potentially dissolvdDAILY MX report only all year
004Nickel, potentially dissolvd30DA AVG report only all year
004Nickel, potentially dissolvdDAILY MX report only all year
004Selenium, potentially dissolvd30DA AVG report only all year
004Selenium, potentially dissolvdDAILY MX report only all year
004Oil and greaseINST MAX <= 10 mg/L all year
004Chromium, trivalent total recoverableDAILY MX report only all year
004Radium 226 + radium 228, total30DA AVG report only all year
004Uranium, total30DA AVG report only all year
004Flow, in conduit or thru treatment plant30DA AVG <= .5 MGD all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Chlorine, total residual30DA AVG report only all year
004Chlorine, total residualDAILY MX report only all year
004Mercury, total [low level]30DA AVG report only all year
004E. coli30DA GM report only all year
004E. coliMX 7D GM report only all year
004Sulfide-hydrogen sulfide [undissociated]30DA AVG report only all year
004Nonylphenol30DA AVG report only all year
004NonylphenolDAILY MX report only all year
004BOD, 5-day, percent removalMO AV MN >= 85 % all year
004Sulfate30DA AVG report only all year
004Oil and grease visualINST MAX report only all year
005Nitrogen, inorganic totalDAILY MX report only all year
005Cyanide, weak acid, dissociable30DA AVG <= 5 ug/L all year
005Cyanide, weak acid, dissociableDAILY MX report only all year
005Chloride [as Cl]30DA AVG report only all year
005Arsenic, total recoverable30DA AVG report only all year
005Iron, total recoverable30DA AVG report only all year
005Iron, total recoverable30DA AVG <= 1000 ug/L all year
005Iron, dissolved [as Fe]30DA AVG report only all year
005Manganese, dissolved [as Mn]30DA AVG report only all year
005Nickel, total recoverable30DA AVG report only all year
005Cadmium, total recoverableDAILY MX report only all year
005Lead, total recoverableDAILY MX report only all year
005Molybdenum, total recoverable30DA AVG report only all year
005Chromium, hexavalent dissolved [as Cr]30DA AVG report only all year
005Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
005Silver, potentially dissolved30DA AVG report only all year
005Silver, potentially dissolvedDAILY MX report only all year
005Copper, potentially dissolved30DA AVG report only all year
005Copper, potentially dissolvedDAILY MX report only all year
005Arsenic, potentially dissolvedDAILY MX report only all year
005Cadmium, potentially dissolvd30DA AVG report only all year
005Cadmium, potentially dissolvdDAILY MX report only all year
005Chromium, trivalent, potentially dissolvd30DA AVG report only all year
005Lead, potentially dissolvd30DA AVG report only all year
005Lead, potentially dissolvdDAILY MX report only all year
005Manganese, potentially dissolvd30DA AVG report only all year
005Manganese, potentially dissolvdDAILY MX report only all year
005Nickel, potentially dissolvd30DA AVG report only all year
005Nickel, potentially dissolvdDAILY MX report only all year
005Selenium, potentially dissolvd30DA AVG <= 28.4 ug/L all year
005Selenium, potentially dissolvdDAILY MX report only all year
005Chromium, trivalent total recoverableDAILY MX report only all year
005Radium 226 + radium 228, total30DA AVG report only all year
005Uranium, total30DA AVG report only all year
005Uranium, total30DA AVG <= 30 ug/L all year
005Uranium, totalDAILY MX report only all year
005Flow, in conduit or thru treatment plant30DA AVG <= 1.26 MGD all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
005Chlorine, total residual30DA AVG <= .086 mg/L all year
005Chlorine, total residualDAILY MX <= .12 mg/L all year
005Mercury, total [low level]30DA AVG report only all year
005Mercury, total [low level]30DA AVG <= .01 mg/L all year
005E. coli30DA GM <= 222 #/100mL all year
005E. coliMX 7D GM <= 444 #/100mL all year
005Sulfide-hydrogen sulfide [undissociated]30DA AVG report only all year
005Nonylphenol30DA AVG report only all year
005NonylphenolDAILY MX report only all year
005Sulfate30DA AVG report only all year
005Sulfate30DA AVG <= 902 mg/L all year
005Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only all year
005Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only all year
005Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 13 tox chronic all year
005Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only all year
005Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only all year
005Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 13 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
300Flow, in conduit or thru treatment plant30DA AVG 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
300Flow, in conduit or thru treatment plantDAILY 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