| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-1848 | IA2525010 | DAWSON WATER WORKS | C | A | MCL (Chem-Rad), Single Sample | MCL | Nitrate (as N) | 04/01/2026 | 04/30/2026 | DAWSON | DALLAS | FO5 | 116 |
| 2026-1840 | IA7751092 | MITCHELLVILLE WATER SUPPLY | C | A | Failure to Consult, GWR | RPT | Groundwater Rule | 04/01/2026 | 04/30/2026 | MITCHELLVILLE | POLK | FO5 | 2515 |
| 2026-1837 | IA1222044 | BRISTOW MUNI WATER SUPPLY | C | A | MCL (Chem-Rad), Single Sample | MCL | Nitrate (as N) | 04/01/2026 | 04/30/2026 | BRISTOW | BUTLER | FO2 | 145 |
| 2026-1853 | IA1750816 | PINE CREEK GOLF COURSE | NC | A | MCL (Chem-Rad), Single Sample | MCL | Nitrate (as N) | 04/01/2026 | 04/30/2026 | MASON CITY | CERRO GORDO | FO2 | 55 |
| 2026-1847 | IA7905088 | BARNES CITY WATER SUPPLY | C | A | Qualified Operator Failure | TT | Disinfection Byproducts Rule | 07/01/2025 | 04/30/2026 | BARNES CITY | POWESHIEK | FO5 | 156 |
| 2026-1789 | IA5225808 | HIGH POINT CITY CHURCH | NC | A | Monitoring (RTCR), Routine Major | MON | Revised Total Coliform Rule (RTCR) | 01/01/2026 | 03/31/2026 | IOWA CITY | JOHNSON | FO6 | 53 |