US Dept of the Army — NPDES permit IA0022144: limits, due date and EPA's record

Federal facility (Ordnance And Accessories), major discharger, Middletown, Iowa. NPDES permit IA0022144, in force until Jan 31, 2031. Last 12 months: over a limit 6 times (last July 2026), 36 required values missing. Source: EPA ECHO, Oct 22, 2026.

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period ending	Outfall	Parameter	Reported	Limit	Over by
October 2025	014	E. coli, geometric mean	6897.127	≤ 223 #/100mL	2993%
December 2025	014	Nitrogen, ammonia total [as N], 30-day average	2.803	≤ 2.6 mg/L	8%
February 2026	013	Chloride [as Cl], 30-day average	61.67763	≤ 14 lb/d	341%
February 2026	013	Chloride [as Cl], daily maximum	61.67763	≤ 22.7 lb/d	172%
April 2026	013	E. coli, geometric mean	3712.916	≤ 630 #/100mL	489%
July 2026	013	E. coli, geometric mean	2509.751	≤ 630 #/100mL	298%

Limits in force (258)

Parameter	Statistic	Limit	Months	Outfall
pH	daily minimum	≥ 6.5 SU	all year	001
pH	daily maximum	≤ 9.5 SU	all year	001
Chlorine, total residual	30-day average	≤ .053 mg/L	all year	001
Chlorine, total residual	daily maximum	≤ .053 mg/L	all year	001
Chlorine, total residual	30-day average	≤ .004 lb/d	all year	001
Chlorine, total residual	daily maximum	≤ .004 lb/d	all year	001
Oxygen, dissolved [DO]	daily minimum	≥ 5 mg/L	all year	013
BOD, 5-day, 20 deg. C	30-day average	report only (mg/L)	all year	013
BOD, 5-day, 20 deg. C	daily maximum	report only (mg/L)	all year	013
BOD, 5-day, 20 deg. C	30-day average	report only (lb/d)	all year	013
BOD, 5-day, 20 deg. C	daily maximum	report only (lb/d)	all year	013
pH	daily minimum	≥ 6.5 SU	all year	013
pH	daily maximum	≤ 9 SU	all year	013
pH	30-day average	report only (SU)	all year	013
pH	daily maximum	report only (SU)	all year	013
Solids, total suspended	30-day average	≤ 30 mg/L	all year	013
Solids, total suspended	daily maximum	≤ 45 mg/L	all year	013
Solids, total suspended	30-day average	≤ 72 lb/d	all year	013
Solids, total suspended	daily maximum	≤ 108 lb/d	all year	013
Solids, total suspended	30-day average	report only (mg/L)	all year	013
Solids, total suspended	daily maximum	report only (mg/L)	all year	013
Solids, total suspended	30-day average	report only (lb/d)	all year	013
Solids, total suspended	daily maximum	report only (lb/d)	all year	013
Nitrogen, total [as N]	30-day average	report only (mg/L)	all year	013
Nitrogen, total [as N]	daily maximum	report only (mg/L)	all year	013
Nitrogen, total [as N]	30-day average	report only (lb/d)	all year	013
Nitrogen, total [as N]	daily maximum	report only (lb/d)	all year	013
Nitrogen, ammonia total [as N]	30-day average	≤ 3.4 mg/L	Jan	013
Nitrogen, ammonia total [as N]	30-day average	≤ 1.6 mg/L	Oct	013
Nitrogen, ammonia total [as N]	30-day average	≤ 1.5 mg/L	Apr	013
Nitrogen, ammonia total [as N]	30-day average	≤ 4 mg/L	Feb	013
Nitrogen, ammonia total [as N]	30-day average	≤ 1.1 mg/L	Sep	013
Nitrogen, ammonia total [as N]	30-day average	≤ 2.3 mg/L	Nov	013
Nitrogen, ammonia total [as N]	30-day average	≤ 1.3 mg/L	Jun	013
Nitrogen, ammonia total [as N]	30-day average	≤ 1 mg/L	Aug	013
Nitrogen, ammonia total [as N]	30-day average	≤ 3.4 mg/L	Mar	013
Nitrogen, ammonia total [as N]	30-day average	≤ 2.5 mg/L	Dec	013
Nitrogen, ammonia total [as N]	30-day average	≤ 1.7 mg/L	May	013
Nitrogen, ammonia total [as N]	30-day average	≤ 1 mg/L	Jul	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 15.2 mg/L	Jan	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 15.7 mg/L	Oct	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 15.7 mg/L	Apr	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 14.2 mg/L	Feb	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 16.5 mg/L	Sep	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 14.7 mg/L	Nov	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 14.4 mg/L	Jun	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 16.5 mg/L	Aug	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 14.7 mg/L	Mar	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 16 mg/L	Dec	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 15.2 mg/L	May	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 17.6 mg/L	Jul	013
Nitrogen, ammonia total [as N]	30-day average	≤ 8.2 lb/d	Jan	013
Nitrogen, ammonia total [as N]	30-day average	≤ 3.7 lb/d	Oct	013
Nitrogen, ammonia total [as N]	30-day average	≤ 3.6 lb/d	Apr	013
Nitrogen, ammonia total [as N]	30-day average	≤ 9.5 lb/d	Feb	013
Nitrogen, ammonia total [as N]	30-day average	≤ 2.5 lb/d	Sep	013
Nitrogen, ammonia total [as N]	30-day average	≤ 5.6 lb/d	Nov	013
Nitrogen, ammonia total [as N]	30-day average	≤ 3.1 lb/d	Jun	013
Nitrogen, ammonia total [as N]	30-day average	≤ 2.3 lb/d	Aug	013
Nitrogen, ammonia total [as N]	30-day average	≤ 8.2 lb/d	Mar	013
Nitrogen, ammonia total [as N]	30-day average	≤ 5.9 lb/d	Dec	013
Nitrogen, ammonia total [as N]	30-day average	≤ 4.2 lb/d	May	013
Nitrogen, ammonia total [as N]	30-day average	≤ 2.4 lb/d	Jul	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 36.4 lb/d	Jan	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 37.6 lb/d	Oct	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 37.6 lb/d	Apr	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 34 lb/d	Feb	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 39.5 lb/d	Sep	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 35.2 lb/d	Nov	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 34.6 lb/d	Jun	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 38.8 lb/d	Aug	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 35.2 lb/d	Mar	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 38.2 lb/d	Dec	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 36.4 lb/d	May	013
Nitrogen, ammonia total [as N]	daily maximum	≤ 42.1 lb/d	Jul	013
Phosphorus, total [as P]	30-day average	report only (mg/L)	all year	013
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	013
Phosphorus, total [as P]	30-day average	report only (lb/d)	all year	013
Phosphorus, total [as P]	daily maximum	report only (lb/d)	all year	013
Chloride [as Cl]	30-day average	≤ 389 mg/L	all year	013
Chloride [as Cl]	daily maximum	≤ 629 mg/L	all year	013
Chloride [as Cl]	30-day average	≤ 930 lb/d	all year	013
Chloride [as Cl]	daily maximum	≤ 1505 lb/d	all year	013
Cadmium, total [as Cd]	30-day average	≤ .0014 mg/L	all year	013
Cadmium, total [as Cd]	daily maximum	≤ .0136 mg/L	all year	013
Cadmium, total [as Cd]	30-day average	≤ .00329 lb/d	all year	013
Cadmium, total [as Cd]	daily maximum	≤ .0326 lb/d	all year	013
Nickel, total [as Ni]	30-day average	≤ .0938 mg/L	all year	013
Nickel, total [as Ni]	daily maximum	≤ .843 mg/L	all year	013
Nickel, total [as Ni]	30-day average	≤ .224 lb/d	all year	013
Nickel, total [as Ni]	daily maximum	≤ 2.02 lb/d	all year	013
Silver, total [as Ag]	30-day average	≤ .012 mg/L	all year	013
Silver, total [as Ag]	daily maximum	≤ .012 mg/L	all year	013
Silver, total [as Ag]	30-day average	≤ .03 lb/d	all year	013
Silver, total [as Ag]	daily maximum	≤ .03 lb/d	all year	013
Aluminum, total [as Al]	30-day average	≤ .89 mg/L	all year	013
Aluminum, total [as Al]	daily maximum	≤ 2.5 mg/L	all year	013
Aluminum, total [as Al]	30-day average	≤ 2.13 lb/d	all year	013
Aluminum, total [as Al]	daily maximum	≤ 5.98 lb/d	all year	013
Selenium, total [as Se]	30-day average	≤ .005 mg/L	all year	013
Selenium, total [as Se]	daily maximum	≤ .019 mg/L	all year	013
Selenium, total [as Se]	30-day average	≤ .012 lb/d	all year	013
Selenium, total [as Se]	daily maximum	≤ .046 lb/d	all year	013
RDX+HMX	30-day average	≤ .75 mg/L	all year	013
RDX+HMX	daily maximum	≤ 2.25 mg/L	all year	013
RDX+HMX	30-day average	≤ 39.54 lb/d	all year	013
RDX+HMX	daily maximum	≤ 39.54 lb/d	all year	013
E. coli	geometric mean	≤ 630 #/100mL	Mar–Nov	013
2,4-Dinitroanisole	30-day average	≤ .18 mg/L	all year	013
2,4-Dinitroanisole	daily maximum	≤ .68 mg/L	all year	013
2,4-Dinitroanisole	30-day average	≤ 25.49 lb/d	all year	013
2,4-Dinitroanisole	daily maximum	≤ 25.49 lb/d	all year	013
Nitrotriazolone [NTO]	30-day average	≤ .28 mg/L	all year	013
Nitrotriazolone [NTO]	daily maximum	≤ 1.1 mg/L	all year	013
Nitrotriazolone [NTO]	30-day average	≤ 17.35 lb/d	all year	013
Nitrotriazolone [NTO]	daily maximum	≤ 17.35 lb/d	all year	013
Toxicity [acute], Ceriodaphnia dubia	daily maximum	≤ 1 N=0;Y=1	all year	013
Toxicity [acute], Pimephales promelas [Fathead Minnow]	daily maximum	≤ 1 N=0;Y=1	all year	013
Nitroguanidine	30-day average	≤ .22 mg/L	all year	013
Nitroguanidine	daily maximum	≤ .38 mg/L	all year	013
Nitroguanidine	30-day average	≤ .91 lb/d	all year	013
Nitroguanidine	daily maximum	≤ .91 lb/d	all year	013
BOD, carbonaceous [5 day, 20 C]	30-day average	≤ 25 mg/L	all year	013
BOD, carbonaceous [5 day, 20 C]	7-day average	≤ 40 mg/L	all year	013
BOD, carbonaceous [5 day, 20 C]	30-day average	≤ 36 lb/d	all year	013
BOD, carbonaceous [5 day, 20 C]	7-day average	≤ 29 lb/d	all year	013
Trinitrotoluene [TNT], total	30-day average	≤ .33 mg/L	all year	013
Trinitrotoluene [TNT], total	daily maximum	≤ .91 mg/L	all year	013
Trinitrotoluene [TNT], total	30-day average	≤ 2.18 lb/d	all year	013
Trinitrotoluene [TNT], total	daily maximum	≤ 2.18 lb/d	all year	013
pH	daily minimum	≥ 6 SU	all year	032
pH	daily maximum	≤ 9 SU	all year	032
RDX+HMX	30-day average	≤ .75 mg/L	all year	032
RDX+HMX	daily maximum	≤ 2.25 mg/L	all year	032
RDX+HMX	30-day average	≤ .58 lb/d	all year	032
RDX+HMX	daily maximum	≤ 1.53 lb/d	all year	032
2,4-Dinitroanisole	30-day average	≤ .18 mg/L	all year	032
2,4-Dinitroanisole	daily maximum	≤ .68 mg/L	all year	032
2,4-Dinitroanisole	30-day average	≤ .017 lb/d	all year	032
2,4-Dinitroanisole	daily maximum	≤ .063 lb/d	all year	032
Nitrotriazolone [NTO]	30-day average	≤ .28 mg/L	all year	032
Nitrotriazolone [NTO]	daily maximum	≤ 1.1 mg/L	all year	032
Nitrotriazolone [NTO]	30-day average	≤ .026 lb/d	all year	032
Nitrotriazolone [NTO]	daily maximum	≤ .102 lb/d	all year	032
Nitroguanidine	30-day average	≤ .22 mg/L	all year	032
Nitroguanidine	daily maximum	≤ .38 mg/L	all year	032
Nitroguanidine	30-day average	≤ .02 lb/d	all year	032
Nitroguanidine	daily maximum	≤ .035 lb/d	all year	032
Trinitrotoluene [TNT], total	30-day average	≤ .33 mg/L	all year	032
Trinitrotoluene [TNT], total	daily maximum	≤ .91 mg/L	all year	032
Trinitrotoluene [TNT], total	30-day average	≤ .084 lb/d	all year	032
Trinitrotoluene [TNT], total	daily maximum	≤ .084 lb/d	all year	032
pH	daily minimum	≥ 6 SU	all year	034
pH	daily maximum	≤ 9 SU	all year	034
Nitrogen, ammonia total [as N]	30-day average	≤ 1.1 mg/L	Jul	034
Nitrogen, ammonia total [as N]	30-day average	≤ 4.1 mg/L	Feb	034
Nitrogen, ammonia total [as N]	30-day average	≤ 2.6 mg/L	Dec	034
Nitrogen, ammonia total [as N]	30-day average	≤ 3.5 mg/L	Jan	034
Nitrogen, ammonia total [as N]	30-day average	≤ 1.6 mg/L	Apr	034
Nitrogen, ammonia total [as N]	30-day average	≤ 1.8 mg/L	May	034
Nitrogen, ammonia total [as N]	30-day average	≤ 2.4 mg/L	Nov	034
Nitrogen, ammonia total [as N]	30-day average	≤ 1.7 mg/L	Oct	034
Nitrogen, ammonia total [as N]	30-day average	≤ 1.1 mg/L	Sep	034
Nitrogen, ammonia total [as N]	30-day average	≤ 3.5 mg/L	Mar	034
Nitrogen, ammonia total [as N]	30-day average	≤ 1 mg/L	Aug	034
Nitrogen, ammonia total [as N]	30-day average	≤ 1.4 mg/L	Jun	034
Nitrogen, ammonia total [as N]	daily maximum	≤ 7.3 mg/L	Jul	034
Nitrogen, ammonia total [as N]	daily maximum	≤ 7.3 mg/L	Feb	034
Nitrogen, ammonia total [as N]	daily maximum	≤ 7.3 mg/L	Dec	034
Nitrogen, ammonia total [as N]	daily maximum	≤ 7.3 mg/L	Jan	034
Nitrogen, ammonia total [as N]	daily maximum	≤ 7.1 mg/L	Apr	034
Nitrogen, ammonia total [as N]	daily maximum	≤ 6.1 mg/L	May	034
Nitrogen, ammonia total [as N]	daily maximum	≤ 6.7 mg/L	Nov	034
Nitrogen, ammonia total [as N]	daily maximum	≤ 6.9 mg/L	Oct	034
Nitrogen, ammonia total [as N]	daily maximum	≤ 5.9 mg/L	Sep	034
Nitrogen, ammonia total [as N]	daily maximum	≤ 7.3 mg/L	Mar	034
Nitrogen, ammonia total [as N]	daily maximum	≤ 7.3 mg/L	Aug	034
Nitrogen, ammonia total [as N]	daily maximum	≤ 7.3 mg/L	Jun	034
Nitrogen, ammonia total [as N]	30-day average	≤ .1 lb/d	Jul	034
Nitrogen, ammonia total [as N]	30-day average	≤ .18 lb/d	Feb	034
Nitrogen, ammonia total [as N]	30-day average	≤ .1 lb/d	Dec	034
Nitrogen, ammonia total [as N]	30-day average	≤ .1 lb/d	Jan	034
Nitrogen, ammonia total [as N]	30-day average	≤ .1 lb/d	Apr	034
Nitrogen, ammonia total [as N]	30-day average	≤ .1 lb/d	May	034
Nitrogen, ammonia total [as N]	30-day average	≤ .1 lb/d	Nov	034
Nitrogen, ammonia total [as N]	30-day average	≤ .1 lb/d	Oct	034
Nitrogen, ammonia total [as N]	30-day average	≤ .05 lb/d	Sep	034
Nitrogen, ammonia total [as N]	30-day average	≤ .1 lb/d	Mar	034
Nitrogen, ammonia total [as N]	30-day average	≤ .1 lb/d	Aug	034
Nitrogen, ammonia total [as N]	30-day average	≤ .1 lb/d	Jun	034
Nitrogen, ammonia total [as N]	daily maximum	≤ .27 lb/d	Jul	034
Nitrogen, ammonia total [as N]	daily maximum	≤ .27 lb/d	Feb	034
Nitrogen, ammonia total [as N]	daily maximum	≤ .27 lb/d	Dec	034
Nitrogen, ammonia total [as N]	daily maximum	≤ .27 lb/d	Jan	034
Nitrogen, ammonia total [as N]	daily maximum	≤ .27 lb/d	Apr	034
Nitrogen, ammonia total [as N]	daily maximum	≤ .2 lb/d	May	034
Nitrogen, ammonia total [as N]	daily maximum	≤ .27 lb/d	Nov	034
Nitrogen, ammonia total [as N]	daily maximum	≤ .27 lb/d	Oct	034
Nitrogen, ammonia total [as N]	daily maximum	≤ .2 lb/d	Sep	034
Nitrogen, ammonia total [as N]	daily maximum	≤ .27 lb/d	Mar	034
Nitrogen, ammonia total [as N]	daily maximum	≤ .27 lb/d	Aug	034
Nitrogen, ammonia total [as N]	daily maximum	≤ .27 lb/d	Jun	034
Iron, total [as Fe]	30-day average	≤ 1 mg/L	all year	034
Iron, total [as Fe]	daily maximum	≤ 1 mg/L	all year	034
Iron, total [as Fe]	30-day average	≤ .038 lb/d	all year	034
Iron, total [as Fe]	daily maximum	≤ .038 lb/d	all year	034
RDX+HMX	30-day average	≤ .75 mg/L	all year	034
RDX+HMX	daily maximum	≤ 2.25 mg/L	all year	034
RDX+HMX	30-day average	≤ .58 lb/d	all year	034
RDX+HMX	daily maximum	≤ .62 lb/d	all year	034
2,4-Dinitroanisole	30-day average	≤ .18 mg/L	all year	034
2,4-Dinitroanisole	daily maximum	≤ .68 mg/L	all year	034
2,4-Dinitroanisole	30-day average	≤ .0068 lb/d	all year	034
2,4-Dinitroanisole	daily maximum	≤ .026 lb/d	all year	034
Nitrotriazolone [NTO]	30-day average	≤ .28 mg/L	all year	034
Nitrotriazolone [NTO]	daily maximum	≤ 1.1 mg/L	all year	034
Nitrotriazolone [NTO]	30-day average	≤ .011 lb/d	all year	034
Nitrotriazolone [NTO]	daily maximum	≤ .04 lb/d	all year	034
Nitroguanidine	30-day average	≤ .22 mg/L	all year	034
Nitroguanidine	daily maximum	≤ .38 mg/L	all year	034
Nitroguanidine	30-day average	≤ .0083 lb/d	all year	034
Nitroguanidine	daily maximum	≤ .014 lb/d	all year	034
Trinitrotoluene [TNT], total	30-day average	≤ .33 mg/L	all year	034
Trinitrotoluene [TNT], total	daily maximum	≤ .91 mg/L	all year	034
Trinitrotoluene [TNT], total	30-day average	≤ .034 lb/d	all year	034
Trinitrotoluene [TNT], total	daily maximum	≤ .034 lb/d	all year	034
pH	daily minimum	≥ 6 SU	all year	035
pH	daily maximum	≤ 9 SU	all year	035
RDX+HMX	30-day average	≤ .75 mg/L	all year	035
RDX+HMX	daily maximum	≤ 2.25 mg/L	all year	035
RDX+HMX	30-day average	≤ .369 lb/d	all year	035
RDX+HMX	daily maximum	≤ .369 lb/d	all year	035
2,4-Dinitroanisole	30-day average	≤ .18 mg/L	all year	035
2,4-Dinitroanisole	daily maximum	≤ .68 mg/L	all year	035
2,4-Dinitroanisole	30-day average	≤ .004 lb/d	all year	035
2,4-Dinitroanisole	daily maximum	≤ .015 lb/d	all year	035
Nitrotriazolone [NTO]	30-day average	≤ .28 mg/L	all year	035
Nitrotriazolone [NTO]	daily maximum	≤ 1.1 mg/L	all year	035
Nitrotriazolone [NTO]	30-day average	≤ .0062 lb/d	all year	035
Nitrotriazolone [NTO]	daily maximum	≤ .025 lb/d	all year	035
Nitroguanidine	30-day average	≤ .22 mg/L	all year	035
Nitroguanidine	daily maximum	≤ .38 mg/L	all year	035
Nitroguanidine	30-day average	≤ .0049 lb/d	all year	035
Nitroguanidine	daily maximum	≤ .008 lb/d	all year	035
Trinitrotoluene [TNT], total	30-day average	≤ .33 mg/L	all year	035
Trinitrotoluene [TNT], total	daily maximum	≤ .91 mg/L	all year	035
Trinitrotoluene [TNT], total	30-day average	≤ .02 lb/d	all year	035
Trinitrotoluene [TNT], total	daily maximum	≤ .02 lb/d	all year	035
pH	daily minimum	≥ 6.5 SU	all year	036
pH	daily maximum	≤ 9.5 SU	all year	036
Chlorine, total residual	30-day average	≤ .051 mg/L	all year	036
Chlorine, total residual	daily maximum	≤ .053 mg/L	all year	036
Chlorine, total residual	30-day average	≤ .003 lb/d	all year	036
Chlorine, total residual	daily maximum	≤ .003 lb/d	all year	036
Solids, total suspended	30-day average	≤ 1.546 lb/d	all year	SUM
Solids, total suspended	daily maximum	≤ 4.568 lb/d	all year	SUM
Oil & Grease	30-day average	≤ .615 lb/d	all year	SUM
Oil & Grease	daily maximum	≤ 1.933 lb/d	all year	SUM

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/IA0022144 · MCP: https://passage-data.com/mcp