Evans City of

NPDES permit CO0047287 · Major POTW · administratively continued, expires 2023-12-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2023-12-31 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 33 forms filed late

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

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 (116)

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 >= 6.5 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
001Nitrogen, ammonia total [as N]30DA AVG <= 6.1 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 6.8 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 11 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 9.4 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 9.3 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 9.4 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 8.5 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 6.9 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 7.3 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 6.2 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 14 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 24 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 31 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 43 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 59 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 41 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 38 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 49 mg/L Dec
001Nitrogen, inorganic totalDAILY MX <= 42 mg/L all year
001Nitrogen, inorganic totalRM report only all year
001Nitrogen, inorganic totalRM <= 15 mg/L all year
001Nitrogen, inorganic total95th % report only all year
001Nitrogen, inorganic total95th % <= 20 mg/L all year
001Phosphorus, total [as P]RM <= 1 mg/L all year
001Phosphorus, total [as P]RM report only all year
001Phosphorus, total [as P]95th % <= 2.5 mg/L all year
001Phosphorus, total [as P]95th % report only all year
001Cyanide, weak acid, dissociableDAILY MX <= 19 ug/L all year
001Cyanide, weak acid, dissociableDAILY MX <= 16 ug/L all year
001Cyanide, total [as CN]DAILY MX report only all year
001Chloride [as Cl]30DA AVG report only all year
001Arsenic, total recoverable30DA AVG report only all year
001Iron, total recoverable30DA 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 report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Manganese, dissolved [as Mn]30DA AVG <= 50 ug/L all year
001Molybdenum, total [as Mo]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Nickel, total recoverable30DA AVG report only all year
001Silver, total [as Ag]DAILY MX report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Lead, total recoverableDAILY MX report only all year
001Molybdenum, total recoverable30DA 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
001Zinc, potentially dissolved30DA AVG report only all year
001Zinc, potentially dissolvedDAILY MX report only all year
001Silver, potentially dissolved30DA AVG report only all year
001Silver, potentially dissolvedDAILY MX report only all year
001Copper, potentially dissolved30DA AVG report only all year
001Copper, potentially dissolvedDAILY MX report only all year
001Cadmium, potentially dissolvd30DA AVG <= 2 ug/L all year
001Cadmium, potentially dissolvd30DA AVG <= 1.1 ug/L all year
001Cadmium, potentially dissolvdDAILY MX <= 81 ug/L all year
001Cadmium, potentially dissolvdDAILY MX <= 81 ug/L all year
001Lead, potentially dissolvd30DA AVG <= 183 ug/L all year
001Lead, potentially dissolvd30DA AVG report only all year
001Lead, potentially dissolvdDAILY MX <= 2557 ug/L all year
001Lead, potentially dissolvdDAILY MX <= 2557 ug/L all year
001Lead, potentially dissolvdROLL AVG <= 20 ug/L all year
001Manganese, potentially dissolvd30DA AVG report only all year
001Manganese, potentially dissolvdDAILY MX report only all year
001Nickel, potentially dissolvd30DA AVG report only all year
001Nickel, potentially dissolvdDAILY 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
001Chromium, trivalent total recoverableDAILY MX report only all year
001Flow, in conduit or thru treatment plant30DA AVG <= 2.88 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residual30DA AVG <= .21 mg/L all year
001Chlorine, total residualINST MAX <= .19 mg/L all year
001Mercury, total low level30DA AVG <= .19 ug/L all year
001Mercury, total low level30DA AVG report only all year
001Mercury, total low levelROLL AVG <= .029 ug/L all year
001E. coli30DA GM <= 341 #/100mL all year
001E. coliMX 7D GM <= 682 #/100mL all year
001Sulfide-hydrogen sulfide [undissociated]30DA AVG report only all year
001Nonylphenol30DA AVG <= 82 ug/L all year
001Nonylphenol30DA AVG <= 44 ug/L all year
001NonylphenolDAILY MX <= 274 ug/L all year
001NonylphenolDAILY MX <= 274 ug/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
001Sulfate30DA AVG report only all year
001Oil and grease visualINST MAX report only all year
001LC50 Static Renewal 48Hr Acute Ceriodaphnia dubiaMN VALUE >= 100 % all year
001LC50 Static Renewal 96Hr Acute Pimephales promelasMN VALUE >= 100 % 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 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