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Elementary And Secondary Schools, Adair, Iowa. NPDES permit IA0067156, in force until Feb 28, 2029. Last 12 months: over a limit 29 times (last August 2026), 2 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Nitrogen, ammonia total [as N], 30-day average | .370383 | ≤ .098 lb/d | 278% |
| October 2025 | Nitrogen, ammonia total [as N], 30-day average | 7.2804 | ≤ 3 mg/L | 143% |
| October 2025 | Nitrogen, ammonia total [as N], daily maximum | .370383 | ≤ .28 lb/d | 32% |
| November 2025 | pH, daily minimum | 5.98 | ≥ 6 SU | — |
| December 2025 | pH, daily minimum | 5.82 | ≥ 6 SU | — |
| January 2026 | Solids, total suspended, 30-day average | 22.29282 | ≤ .97 lb/d | 2198% |
| January 2026 | Solids, total suspended, 30-day average | 297 | ≤ 30 mg/L | 890% |
| January 2026 | Solids, total suspended, 7-day average | 22.29282 | ≤ 1.46 lb/d | 1427% |
| January 2026 | Solids, total suspended, 7-day average | 297 | ≤ 45 mg/L | 560% |
| February 2026 | Nitrogen, ammonia total [as N], 30-day average | .70056 | ≤ .195 lb/d | 259% |
| February 2026 | Nitrogen, ammonia total [as N], 30-day average | 12 | ≤ 6 mg/L | 100% |
| February 2026 | Nitrogen, ammonia total [as N], daily maximum | .70056 | ≤ .476 lb/d | 47% |
| March 2026 | Nitrogen, ammonia total [as N], 30-day average | 13 | ≤ 4.7 mg/L | 177% |
| March 2026 | Nitrogen, ammonia total [as N], daily maximum | 13 | ≤ 10.3 mg/L | 26% |
| April 2026 | Nitrogen, ammonia total [as N], 30-day average | .559614 | ≤ .074 lb/d | 656% |
| April 2026 | Nitrogen, ammonia total [as N], 30-day average | 11 | ≤ 2.3 mg/L | 378% |
| April 2026 | Nitrogen, ammonia total [as N], daily maximum | .559614 | ≤ .232 lb/d | 141% |
| April 2026 | Nitrogen, ammonia total [as N], daily maximum | 11 | ≤ 7.1 mg/L | 55% |
| May 2026 | BOD, carbonaceous [5 day, 20 C], 30-day average | 1.062516 | ≤ .81 lb/d | 31% |
| May 2026 | Nitrogen, ammonia total [as N], 30-day average | 1.290198 | ≤ .066 lb/d | 1855% |
| May 2026 | Nitrogen, ammonia total [as N], 30-day average | 17 | ≤ 2 mg/L | 750% |
| May 2026 | Nitrogen, ammonia total [as N], daily maximum | 1.290198 | ≤ .232 lb/d | 456% |
| May 2026 | Nitrogen, ammonia total [as N], daily maximum | 17 | ≤ 7.1 mg/L | 139% |
| May 2026 | Solids, total suspended, 30-day average | 11.15641 | ≤ .97 lb/d | 1050% |
| May 2026 | Solids, total suspended, 30-day average | 147 | ≤ 30 mg/L | 390% |
| May 2026 | Solids, total suspended, 7-day average | 11.15641 | ≤ 1.46 lb/d | 664% |
| May 2026 | Solids, total suspended, 7-day average | 147 | ≤ 45 mg/L | 227% |
| July 2026 | pH, daily minimum | 5.8 | ≥ 6 SU | — |
| August 2026 | Nitrogen, ammonia total [as N], 30-day average | 2.441 | ≤ 1.2 mg/L | 103% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 1 mg/L | all year |
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year |
| Solids, total suspended | 7-day average | ≤ 45 mg/L | all year |
| Solids, total suspended | 30-day average | ≤ .97 lb/d | all year |
| Solids, total suspended | 7-day average | ≤ 1.46 lb/d | all year |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.1 mg/L | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.6 mg/L | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.3 mg/L | Jul |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2 mg/L | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.3 mg/L | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.7 mg/L | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 6 mg/L | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3 mg/L | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.2 mg/L | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5.4 mg/L | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.5 mg/L | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.7 mg/L | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.6 mg/L | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.1 mg/L | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.1 mg/L | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.1 mg/L | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.1 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.6 mg/L | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.6 mg/L | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.6 mg/L | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.9 mg/L | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.3 mg/L | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.1 mg/L | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.3 mg/L | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .135 lb/d | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .117 lb/d | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .041 lb/d | Jul |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .066 lb/d | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .074 lb/d | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .054 lb/d | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .195 lb/d | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .098 lb/d | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .038 lb/d | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .174 lb/d | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .05 lb/d | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .154 lb/d | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .28 lb/d | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .232 lb/d | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .232 lb/d | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .232 lb/d | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .232 lb/d | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .28 lb/d | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .476 lb/d | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .28 lb/d | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .192 lb/d | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .401 lb/d | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .232 lb/d | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .336 lb/d | Mar |
| E. coli | geometric mean | ≤ 126 #/100mL | Mar–Nov |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 25 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 40 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ .81 lb/d | all year |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 1.3 lb/d | all year |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Nitrogen, ammonia total [as N], 30-day average | 0.031 lb/d (Aug) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 1 mg/L (Aug) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 1.6 mg/L (Oct) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 0.051 lb/d (Oct) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 0.081 lb/d (Dec) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 2.5 mg/L (Dec) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 4 mg/L (Feb) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 0.129 lb/d (Feb) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 0.057 lb/d (May) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 3.4 mg/L (Mar) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 0.111 lb/d (Mar) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 1.7 mg/L (May) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 1.3 mg/L (Jun) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 0.043 lb/d (Jun) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 2.3 mg/L (Nov) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 0.076 lb/d (Nov) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 3.4 mg/L (Jan) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 0.111 lb/d (Jan) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 1.1 mg/L (Sep) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 0.035 lb/d (Sep) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 1 mg/L (Jul) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 0.033 lb/d (Jul) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 0.05 lb/d (Apr) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 1.5 mg/L (Apr) | tighter | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 0.463 lb/d (Feb) | tighter | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 14.2 mg/L (Feb) | tighter | — | — |
Cited limits by parameter: Iowa's rules and the federal ones.
Same industry: the 30 Educational Services permits in Iowa.
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