Del Norte Town of

NPDES permit CO0020281 · Minor POTW · administratively continued, expires 2024-12-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2024-12-31 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

26values over a limit
0required values missing, on 0 form(s)
0of 30 forms filed late

Last period with anything received: 2026-07-31. Most often over: Copper, potentially dissolved (9), BOD, 5-day, percent removal (6), BOD, 5-day, 20 deg. C (4).

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 (136)

OutfallParameterStatisticLimitMonths
001Herbicides, total30DA AVG report only all year
001Herbicides, totalDAILY MX report only all year
001BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L all year
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
001BOD, 5-day, 20 deg. CMX 7D AV <= 45 mg/L all year
001BOD, 5-day, 20 deg. C30DA AVG <= 247 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 371 lb/d all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspended30DA AVG <= 75 mg/L all year
001Solids, total suspendedMX 7D AV <= 110 mg/L all year
001Nitrogen, ammonia total [as N]30DA AVG <= 65 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 64 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 58 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 65 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 36 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 65 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 65 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 61 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 51 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 65 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 65 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 65 mg/L Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 16 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 16.6 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 13.8 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 10.8 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 65 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 11 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 64 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 58 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Jun
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 Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 64 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 58 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 65 mg/L Dec
001Nitrogen, ammonia total [as N]ROLL AVG <= 29 mg/L Oct
001Nitrogen, ammonia total [as N]ROLL AVG <= 20 mg/L Aug
001Nitrogen, ammonia total [as N]ROLL AVG <= 35 mg/L Jan
001Nitrogen, ammonia total [as N]ROLL AVG <= 23 mg/L Sep
001Nitrogen, ammonia total [as N]ROLL AVG <= 23 mg/L Mar
001Nitrogen, ammonia total [as N]ROLL AVG <= 19 mg/L Nov
001Nitrogen, ammonia total [as N]ROLL AVG <= 56 mg/L May
001Nitrogen, ammonia total [as N]ROLL AVG <= 35 mg/L Feb
001Nitrogen, ammonia total [as N]ROLL AVG <= 43 mg/L Apr
001Nitrogen, ammonia total [as N]ROLL AVG <= 19 mg/L Jul
001Nitrogen, ammonia total [as N]ROLL AVG <= 39 mg/L Jun
001Nitrogen, ammonia total [as N]ROLL AVG <= 23 mg/L Dec
001Nitrogen, ammonia total [as N]ROLL AVG <= 15 mg/L May
001Nitrogen, ammonia total [as N]ROLL AVG <= 12 mg/L Jun
001Nitrogen, ammonia total [as N]ROLL AVG <= 11 mg/L Jul
001Nitrogen, ammonia total [as N]ROLL AVG <= 10 mg/L Aug
001Nitrogen, ammonia total [as N]ROLL AVG <= 9.6 mg/L Sep
001Nitrogen, ammonia total [as N]ROLL AVG <= 9.4 mg/L Oct
001Nitrogen, ammonia total [as N]ROLL AVG <= 8.4 mg/L Nov
001Nitrogen, inorganic totalDAILY MX <= 100 mg/L all year
001Nitrogen, inorganic totalROLL AVG <= 19 mL/L all year
001Arsenic, total recoverable30DA AVG report only all year
001Zinc, potentially dissolved30DA AVG report only all year
001Zinc, potentially dissolved30DA AVG <= 48 ug/L all year
001Zinc, potentially dissolvedDAILY MX report only all year
001Zinc, potentially dissolvedDAILY MX <= 245 ug/L all year
001Copper, potentially dissolved30DA AVG report only all year
001Copper, potentially dissolved30DA AVG <= 3.1 ug/L all year
001Copper, potentially dissolvedDAILY MX <= 32 ug/L all year
001Copper, potentially dissolvedDAILY MX <= 32 ug/L all year
001Copper, potentially dissolvedROLL AVG report only all year
001Cadmium, potentially dissolvd30DA AVG <= 3.7 ug/L all year
001Cadmium, potentially dissolvd30DA AVG report only all year
001Cadmium, potentially dissolvdDAILY MX <= 9.3 ug/L all year
001Cadmium, potentially dissolvdDAILY MX report only all year
001Cadmium, potentially dissolvdROLL AVG report only all year
001Lead, potentially dissolvd30DA AVG report only all year
001Lead, potentially dissolvdDAILY MX report only all year
001Uranium, potentially dissolvd30DA AVG report only all year
001Uranium, potentially dissolvdDAILY MX report only all year
001Oil and greaseINST MAX <= 10 mg/L all year
001Radium 226 + radium 228, total30DA AVG report only all year
001Radium 226 + radium 228, totalDAILY MX report only all year
001Strontium 90, total30DA AVG report only all year
001Strontium 90, totalDAILY MX report only all year
001Uranium, total30DA AVG report only all year
001Uranium, totalDAILY MX report only all year
001Cesium-13430DA AVG report only all year
001Cesium-134DAILY MX report only all year
001Chlorpyrifos30DA AVG report only all year
001ChlorpyrifosDAILY MX report only all year
001Phosphated pesticides30DA AVG report only all year
001Endosulfan, total30DA AVG report only all year
0012,4-Dichlorophenoxyacetic acid30DA AVG report only all year
001Flow, in conduit or thru treatment plant30DA AVG <= .99 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residual30DA AVG <= .48 mg/L all year
001Chlorine, total residualINST MAX <= .29 mg/L all year
001E. coli30DA GM <= 2000 #/100mL all year
001E. coliMX 7D GM <= 4000 #/100mL all year
001E. coliROLL AVG <= 1136 #/100mL all year
001Prometon30DA AVG report only all year
001Thorium-230 + Thorium-23230DA AVG report only all year
001Thorium-230 + Thorium-232DAILY MX report only all year
001Pesticides, general30DA AVG report only all year
001Pesticides, generalDAILY MX report only all year
001Chlorinated pesticides, total30DA AVG report only all year
001Chlorinated pesticides, totalDAILY MX report only all year
001Organic pesticide chemicals [40 CFR455]30DA AVG report only all year
001Organic pesticide chemicals [40 CFR455]DAILY MX report only all year
001Glyphosate, total30DA AVG report only all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Total pesticides30DA AVG report only all year
001Total pesticidesDAILY MX report only all year
001Metribuzin30DA 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