CITY OF MADRID

NPDES permit IA0028207 · Minor POTW · effective, expires 2031-08-31 · EPA's file as of 2026-09-19

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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.

EPA's record, 2025-09-01 to 2026-08-31

2values over a limit
0required values missing, on 0 form(s)
0of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Solids, total suspended (2).

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among IA permits in EPA's filings — check your permit).

Limits in force (62)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspended30DA AVG <= 30 mg/L all year
001Solids, total suspended7 DA AVG <= 45 mg/L all year
001Solids, total suspended30DA AVG <= 248 lb/d all year
001Solids, total suspended7 DA AVG <= 372 lb/d all year
001Nitrogen, ammonia total [as N]30DA AVG <= 3.9 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 1.2 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 2.8 mg/L Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 1.7 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 2 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 1.5 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 3.9 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 4.5 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 2.7 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 1.1 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 1.1 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 1.8 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 14.7 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 16.5 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 16 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 15.8 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 15.2 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 14.5 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 15.2 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 14.3 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 14.7 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 16.3 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 17.6 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 15.8 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 29.9 lb/d Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 9.3 lb/d Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 21.7 lb/d Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 13.4 lb/d Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 15.3 lb/d May
001Nitrogen, ammonia total [as N]30DA AVG <= 11.5 lb/d Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 29.9 lb/d Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 34.7 lb/d Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 20.4 lb/d Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 8.4 lb/d Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 8.8 lb/d Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 13.7 lb/d Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 121.5 lb/d Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 136.4 lb/d Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 132 lb/d Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 129.8 lb/d Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 125.6 lb/d May
001Nitrogen, ammonia total [as N]DAILY MX <= 119.4 lb/d Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 125.6 lb/d Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 117.5 lb/d Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 121.4 lb/d Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 134.2 lb/d Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 145.4 lb/d Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 129.8 lb/d Oct
001Nitrogen, nitrate total [as N]30DA AVG <= 184 lb/d all year
001Nitrogen, nitrate total [as N]DAILY MX <= 302 lb/d all year
001E. coliGEO MEAN <= 163 #/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 25 mg/L all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 40 mg/L all year
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 206 lb/d all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 330 lb/d 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