SHAMROCK COLONY
South Dakota — Community Water System — PWSID: SD4602267
System Information
| PWSID | SD4602267 |
| System Name | SHAMROCK COLONY |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Dec 31, 2008 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | South Dakota |
| City | CARPENTER |
| ZIP Code | 57322 |
| Address | 19087 413TH AVENUE |
| Organization | SHAMROCK COLONY |
| Phone | 6053521452 |
Population & Service
| Population Served | 75 |
| Service Connections | 17 |
Drinking Water Violations (235)
This water system has 235 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Aug 1, 2025 | Aug 31, 2025 | MON | No | Yes | — | — | — | Resolved | Aug 31, 2025 | — | |
| Aug 1, 2025 | Aug 31, 2025 | MON | No | Yes | — | — | — | Resolved | Aug 31, 2025 | — | |
| Jul 1, 2025 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Jun 1, 2025 | Jun 30, 2025 | MON | No | Yes | — | — | — | Resolved | Jun 30, 2025 | — | |
| Jun 1, 2025 | Jun 30, 2025 | MON | No | Yes | — | — | — | Resolved | Jun 30, 2025 | — | |
| Mar 1, 2025 | Mar 31, 2025 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2025 | — | |
| Mar 1, 2025 | Mar 31, 2025 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2025 | — | |
| 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 | — | |
| Jan 1, 2024 | Jan 31, 2024 | MON | No | Yes | — | — | — | Resolved | Jan 31, 2024 | — | |
| Jan 1, 2024 | Jan 31, 2024 | MON | No | Yes | — | — | — | Resolved | Jan 31, 2024 | — | |
| Jan 1, 2024 | Jan 31, 2024 | MON | No | Yes | — | — | — | Resolved | Jan 31, 2024 | — | |
| Dec 1, 2023 | Dec 31, 2023 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2023 | — | |
| Dec 1, 2023 | Dec 31, 2023 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2023 | — | |
| Dec 1, 2023 | Dec 31, 2023 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2023 | — | |
| Oct 1, 2021 | Oct 31, 2021 | MON | No | Yes | — | — | — | Resolved | Oct 31, 2021 | — | |
| Oct 1, 2021 | Oct 31, 2021 | MON | No | Yes | — | — | — | Resolved | Oct 31, 2021 | — | |
| Oct 1, 2021 | Oct 31, 2021 | MON | No | Yes | — | — | — | Resolved | Oct 31, 2021 | — | |
| Sep 1, 2021 | Sep 30, 2021 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2021 | — | |
| Sep 1, 2021 | Sep 30, 2021 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2021 | — | |
| Sep 1, 2021 | Sep 30, 2021 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2021 | — | |
| Jan 1, 2021 | Jan 31, 2021 | MON | No | Yes | — | — | — | Resolved | Jan 31, 2021 | — | |
| Jan 1, 2021 | Jan 31, 2021 | MON | No | Yes | — | — | — | Resolved | Jan 31, 2021 | — | |
| Jan 1, 2021 | Jan 31, 2021 | MON | No | Yes | — | — | — | Resolved | Jan 31, 2021 | — | |
| Dec 1, 2019 | Dec 31, 2019 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2019 | — | |
| Dec 1, 2019 | Dec 31, 2019 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2019 | — | |
| Dec 1, 2019 | Dec 31, 2019 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2019 | — | |
| Nov 22, 2017 | — | TT | Yes | No | — | — | — | Resolved | Jun 4, 2018 | — | |
| Nov 22, 2017 | — | TT | Yes | No | — | — | — | Resolved | Jun 4, 2018 | — | |
| Jul 1, 2017 | Jul 31, 2017 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2017 | — | |
| Jul 1, 2017 | Jul 31, 2017 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2017 | — | |
| Jul 1, 2017 | Jul 31, 2017 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2017 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 0.04 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | — | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 0.001 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | — | — | Resolved | Mar 31, 2014 | — |
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.