| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-2897 | IA8222174 | 200 EAST 90TH ST, LLC | NTNC | A | MCL, EC+ (RTCR) | MCL | Revised Total Coliform Rule (RTCR) | 09/01/2026 | 09/30/2026 | DAVENPORT | SCOTT | FO6 | 425 |
| 2026-2629 | IA7930008 | GRINNELL WATER DEPARTMENT | C | A | MCL (Chem-Rad), Average | MCL | Radium, Combined (226, 228) | 07/01/2026 | 09/30/2026 | GRINNELL | POWESHIEK | FO5 | 9564 |
| 2026-2626 | IA5200802 | KESSLERS HOMEOWNERS ASSN | C | A | MCL (Chem-Rad), Average | MCL | Radium, Combined (226, 228) | 07/01/2026 | 09/30/2026 | IOWA CITY | JOHNSON | FO6 | 60 |
| 2026-3151 | IA8018040 | DIAGONAL WATER DEPARTMENT | C | A | MCL (Chem-Rad), Average | MCL | Total Haloacetic Acids (HAA5) | 07/01/2026 | 09/30/2026 | DIAGONAL | RINGGOLD | FO4 | 338 |
| 2026-2830 | IA2742076 | LEON WATER SUPPLY | C | A | MCL (Chem-Rad), Average | MCL | Total Haloacetic Acids (HAA5) | 07/01/2026 | 09/30/2026 | LEON | DECATUR | FO5 | 1830 |
| 2026-2829 | IA2742076 | LEON WATER SUPPLY | C | A | MCL (Chem-Rad), Average | MCL | Total Haloacetic Acids (HAA5) | 07/01/2026 | 09/30/2026 | LEON | DECATUR | FO5 | 1830 |