DIAGONAL WATER DEPARTMENT
Iowa - Community Water System - PWSID: IA8018040
System Information
| PWSID | IA8018040 |
| System Name | DIAGONAL WATER DEPARTMENT |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 07 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 27, 1979 |
| Last Reported | Jun 17, 2026 |
Location & Contact
| State | Iowa |
| City | DIAGONAL |
| ZIP Code | 50845 |
| Address | ATTN OPERATOR |
| Organization | DIAGONAL WATER DEPARTMENT |
| Phone | 641-344-4609 |
Population & Service
| Population Served | 338 |
| Service Connections | 133 |
Drinking Water Violations (88)
This water system has 88 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov 1, 2025 | Nov 30, 2025 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Nov 30, 2025 | - | |
| Nov 1, 2025 | Nov 30, 2025 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Nov 30, 2025 | - | |
| Nov 1, 2025 | Nov 30, 2025 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Nov 30, 2025 | - | |
| Nov 1, 2025 | Nov 30, 2025 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Nov 30, 2025 | - | |
| Nov 1, 2025 | Nov 30, 2025 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Nov 30, 2025 | - | |
| Nov 1, 2025 | Nov 30, 2025 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Nov 30, 2025 | - | |
| Nov 1, 2025 | Nov 30, 2025 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Nov 30, 2025 | - | |
| Nov 1, 2025 | Nov 30, 2025 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Nov 30, 2025 | - | |
| Nov 1, 2025 | Nov 30, 2025 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Nov 30, 2025 | - | |
| Nov 1, 2025 | Nov 30, 2025 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Nov 30, 2025 | - | |
| Jun 1, 2025 | - | MR | No | No | - | TT | - | Unaddressed | - | - | |
| Jun 1, 2025 | - | MR | No | No | - | TT | - | Unaddressed | - | - | |
| Jun 1, 2025 | - | MR | No | No | - | TT | - | Unaddressed | - | - | |
| Mar 21, 2025 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Mar 21, 2025 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Mar 21, 2025 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Oct 21, 2024 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Oct 21, 2024 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Oct 21, 2024 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Oct 1, 2024 | Oct 31, 2024 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2024 | - | |
| Oct 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | 1 mg/L | - | Resolved | Dec 31, 2024 | - | |
| Oct 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | 1 mg/L | - | Resolved | Dec 31, 2024 | - | |
| Oct 1, 2024 | Oct 31, 2024 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2024 | - | |
| Oct 1, 2024 | Oct 31, 2024 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2024 | - | |
| Oct 1, 2024 | Oct 31, 2024 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2024 | - | |
| Oct 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | 1 mg/L | - | Resolved | Dec 31, 2024 | - | |
| Oct 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | 1 mg/L | - | Resolved | Dec 31, 2024 | - | |
| Apr 1, 2024 | Jun 30, 2024 | MR | No | Yes | - | 1 mg/L | - | Resolved | Jun 30, 2024 | - | |
| Apr 1, 2024 | Jun 30, 2024 | MR | No | Yes | - | 1 mg/L | - | Resolved | Jun 30, 2024 | - | |
| Apr 1, 2024 | Jun 30, 2024 | MR | No | Yes | - | 1 mg/L | - | Resolved | Jun 30, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 1 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 1 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 1 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Apr 1, 2023 | Apr 30, 2023 | MON | No | Yes | - | - | - | Resolved | Apr 30, 2023 | - | |
| Apr 1, 2023 | Apr 30, 2023 | MON | No | Yes | - | - | - | Resolved | Apr 30, 2023 | - | |
| Apr 1, 2023 | Apr 30, 2023 | MON | No | Yes | - | - | - | Resolved | Apr 30, 2023 | - | |
| Apr 1, 2023 | Apr 30, 2023 | MON | No | Yes | - | - | - | Resolved | Apr 30, 2023 | - | |
| Aug 1, 2021 | Aug 31, 2021 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2021 | - | |
| Aug 1, 2021 | Aug 31, 2021 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2021 | - | |
| Aug 1, 2021 | Aug 31, 2021 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2021 | - | |
| Aug 1, 2021 | Aug 31, 2021 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2021 | - | |
| Aug 1, 2021 | Aug 31, 2021 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2021 | - | |
| Nov 1, 2019 | - | MR | No | No | - | TT | - | Resolved | Jan 20, 2020 | - | |
| Nov 1, 2019 | - | MR | No | No | - | TT | - | Resolved | Jan 20, 2020 | - | |
| Oct 1, 2019 | Oct 31, 2019 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2019 | - | |
| Oct 1, 2019 | Oct 31, 2019 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2019 | - | |
| Oct 1, 2019 | Oct 31, 2019 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2019 | - | |
| Oct 1, 2019 | Oct 31, 2019 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2019 | - | |
| Jun 1, 2018 | - | MR | No | No | - | TT | - | Resolved | Jul 22, 2019 | - | |
| Jun 1, 2018 | - | MR | No | No | - | TT | - | Resolved | Jul 22, 2019 | - |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.