| Violation ID | PWS ID | PWS Name | PWS Type | PWS Activity Status | Violation Name | Violation Category | Analyte Name | Compliance Begin Date | Compliance End Date | City | County | Field Office | Population Served |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-287 | IA2742076 | LEON WATER SUPPLY | C | A | MCL (Chem-Rad), Average | MCL | Total Haloacetic Acids (HAA5) | 10/01/2025 | 12/31/2025 | LEON | DECATUR | FO5 | 1830 |
| 2026-288 | IA2742076 | LEON WATER SUPPLY | C | A | MCL (Chem-Rad), Average | MCL | Total Haloacetic Acids (HAA5) | 10/01/2025 | 12/31/2025 | LEON | DECATUR | FO5 | 1830 |
| 2026-258 | IA5200802 | KESSLERS HOMEOWNERS ASSN | C | A | MCL (Chem-Rad), Average | MCL | Radium, Combined (226, 228) | 10/01/2025 | 12/31/2025 | IOWA CITY | JOHNSON | FO6 | 60 |
| 2026-733 | IA0990808 | HERITAGE GLOBAL METHODIST CHURCH | NC | A | MCL (Chem-Rad), Single Sample | MCL | Nitrate (as N) | 12/01/2025 | 12/31/2025 | WAVERLY | BREMER | FO1 | 100 |
| 2026-1084 | IA7450019 | MALLARD WATER SUPPLY | C | A | Routine/Repeat Tap Sampling (Pb/Cu) | MON | Lead & Copper Rule | 01/01/2025 | 12/31/2025 | MALLARD | PALO ALTO | FO3 | 257 |
| 2026-745 | IA6545020 | MALVERN WATER SUPPLY | C | A | Routine/Repeat Tap Sampling (Pb/Cu) | MON | Lead & Copper Rule | 07/01/2025 | 12/31/2025 | MALVERN | MILLS | FO4 | 1046 |