Leadville Sanitation District

NPDES permit CO0021164 · Major POTW · expired, expires 2025-12-31 · 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 2025-12-31 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

8values over a limit
0required values missing, on 0 form(s)
2of 31 forms filed late

Last period with anything received: 2026-07-31. Most often over: pH (2), Zinc, potentially dissolved (2), E. coli (2).

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 (161)

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 <= 17 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 13 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 20 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 20 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 20 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 20 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 20 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 17 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 13 mg/L Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 20 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 20 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 17 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 32 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 23 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 37 mg/L Feb
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 <= 44 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 31 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 23 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 46 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 62 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 32 mg/L Nov
001Cyanide, weak acid, dissociableDAILY MX report only all year
001Cyanide, weak acid, dissociableROLL AVG report only all year
001Cyanide, total [as CN]DAILY MX report only all year
001Arsenic, total recoverable30DA AVG report only all year
001Arsenic, total recoverableROLL AVG report only all year
001Iron, total recoverable30DA 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
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
001Chromium, total recoverableDAILY MX report only all year
001Molybdenum, total recoverableDAILY MX report only all year
001Molybdenum, 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]DAILY MX report only all year
001Zinc, potentially dissolved30DA AVG report only all year
001Zinc, potentially dissolved30DA AVG <= 340 ug/L Jan
001Zinc, potentially dissolved30DA AVG <= 340 ug/L Feb
001Zinc, potentially dissolved30DA AVG <= 340 ug/L Mar
001Zinc, potentially dissolved30DA AVG <= 340 ug/L Apr
001Zinc, potentially dissolved30DA AVG <= 340 ug/L May
001Zinc, potentially dissolved30DA AVG <= 340 ug/L Jun
001Zinc, potentially dissolved30DA AVG <= 340 ug/L Jul
001Zinc, potentially dissolved30DA AVG <= 340 ug/L Aug
001Zinc, potentially dissolved30DA AVG <= 268 ug/L Sep
001Zinc, potentially dissolved30DA AVG <= 340 ug/L Oct
001Zinc, potentially dissolved30DA AVG <= 340 ug/L Nov
001Zinc, potentially dissolved30DA AVG <= 340 ug/L Dec
001Zinc, potentially dissolvedDAILY MX report only all year
001Zinc, potentially dissolvedDAILY MX <= 493 ug/L Jan
001Zinc, potentially dissolvedDAILY MX <= 493 ug/L Feb
001Zinc, potentially dissolvedDAILY MX <= 493 ug/L Mar
001Zinc, potentially dissolvedDAILY MX <= 493 ug/L Apr
001Zinc, potentially dissolvedDAILY MX <= 493 ug/L May
001Zinc, potentially dissolvedDAILY MX <= 493 ug/L Jun
001Zinc, potentially dissolvedDAILY MX <= 433 ug/L Jul
001Zinc, potentially dissolvedDAILY MX <= 493 ug/L Aug
001Zinc, potentially dissolvedDAILY MX <= 315 ug/L Sep
001Zinc, potentially dissolvedDAILY MX <= 493 ug/L Oct
001Zinc, potentially dissolvedDAILY MX <= 493 ug/L Nov
001Zinc, potentially dissolvedDAILY MX <= 493 ug/L Dec
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
001Copper, potentially dissolvedROLL AVG report only all year
001Arsenic, potentially dissolvedDAILY MX report only all year
001Cadmium, potentially dissolvd30DA AVG <= 1.6 ug/L Jan
001Cadmium, potentially dissolvd30DA AVG <= 1.6 ug/L Feb
001Cadmium, potentially dissolvd30DA AVG <= 1.6 ug/L Mar
001Cadmium, potentially dissolvd30DA AVG <= 1.6 ug/L Apr
001Cadmium, potentially dissolvd30DA AVG <= 1.2 ug/L May
001Cadmium, potentially dissolvd30DA AVG <= 1.6 ug/L Jun
001Cadmium, potentially dissolvd30DA AVG <= 1.4 ug/L Jul
001Cadmium, potentially dissolvd30DA AVG <= 1.6 ug/L Aug
001Cadmium, potentially dissolvd30DA AVG <= 1.1 ug/L Sep
001Cadmium, potentially dissolvd30DA AVG <= 1.6 ug/L Oct
001Cadmium, potentially dissolvd30DA AVG <= 1.6 ug/L Nov
001Cadmium, potentially dissolvd30DA AVG <= 1.6 ug/L Dec
001Cadmium, potentially dissolvdDAILY MX <= 1.9 ug/L Jan
001Cadmium, potentially dissolvdDAILY MX <= 1.9 ug/L Feb
001Cadmium, potentially dissolvdDAILY MX <= 1.9 ug/L Mar
001Cadmium, potentially dissolvdDAILY MX <= 1.9 ug/L Apr
001Cadmium, potentially dissolvdDAILY MX <= 1.4 ug/L May
001Cadmium, potentially dissolvdDAILY MX <= 1.9 ug/L Jun
001Cadmium, potentially dissolvdDAILY MX <= 1.7 ug/L Jul
001Cadmium, potentially dissolvdDAILY MX <= 1.9 ug/L Aug
001Cadmium, potentially dissolvdDAILY MX <= 1.2 ug/L Sep
001Cadmium, potentially dissolvdDAILY MX <= 1.9 ug/L Oct
001Cadmium, potentially dissolvdDAILY MX <= 1.9 ug/L Nov
001Cadmium, potentially dissolvdDAILY MX <= 1.9 ug/L Dec
001Cadmium, potentially dissolvdROLL AVG report only all year
001Cadmium, potentially dissolvdROLL AVG <= 1 ug/L all year
001Chromium, trivalent, potentially dissolvd30DA AVG report only all year
001Chromium, trivalent, potentially dissolvdDAILY MX report only all year
001Lead, potentially dissolvd30DA AVG report only all year
001Lead, potentially dissolvdDAILY MX report only all year
001Lead, potentially dissolvdROLL AVG report only all year
001Manganese, potentially dissolvd30DA AVG report only all year
001Manganese, potentially dissolvdDAILY MX report only all year
001Manganese, potentially dissolvdROLL AVG report only all year
001Nickel, potentially dissolvd30DA AVG report only all year
001Nickel, potentially dissolvdDAILY MX report only all year
001Nickel, potentially dissolvdROLL AVG report only all year
001Selenium, potentially dissolvd30DA AVG report only all year
001Selenium, potentially dissolvdDAILY MX report only all year
001Uranium, potentially dissolvd30DA AVG report only all year
001Oil and greaseINST MAX <= 10 mg/L all year
001Total phenolsDAILY MX report only all year
001Radium 226 + radium 228, total30DA AVG report only all year
001Strontium 90, total30DA AVG report only all year
001Cesium-13430DA AVG report only all year
001Benzene30DA AVG report only all year
001BenzeneDAILY MX report only all year
001BTEXDAILY MX report only all year
001BTEXDAILY MX <= 100 ug/L all year
001Flow, in conduit or thru treatment plant30DA AVG <= 1.15 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residual30DA AVG <= .34 mg/L all year
001Chlorine, total residualINST MAX <= .48 mg/L all year
001Mercury, total [low level]30DA AVG <= .077 ug/L all year
001E. coli30DA GM <= 630 #/100mL all year
001E. coliMX 7D GM <= 1260 #/100mL all year
001Sulfide-hydrogen sulfide [undissociated]30DA AVG report only all year
001Nonylphenol30DA AVG report only all year
001NonylphenolDAILY MX report only all year
001NonylphenolROLL AVG report only all year
001Thorium-230 + Thorium-23230DA AVG report only 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
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