HERMOSA WATER USERS ASSOCIATION
South Dakota - Community Water System - PWSID: SD4602180
System Information
| PWSID | SD4602180 |
| System Name | HERMOSA WATER USERS ASSOCIATION |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jun 19, 1999 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | South Dakota |
| City | HERMOSA |
| ZIP Code | 57744 |
| Address | 23912 145TH AVENUE |
| Organization | HERMOSA WATER USERS ASSOCIATION |
| Phone | - |
Population & Service
| Population Served | 108 |
| Service Connections | 49 |
Drinking Water Violations (102)
This water system has 102 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Dec 23, 2021 | - | |
| Jul 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Dec 23, 2021 | - | |
| Jul 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Dec 23, 2021 | - | |
| Jul 1, 2020 | - | MR | No | No | - | TT | - | Resolved | Dec 16, 2020 | - | |
| Jul 1, 2020 | - | MR | No | No | - | TT | - | Resolved | Dec 16, 2020 | - | |
| Jul 1, 2020 | - | MR | No | No | - | TT | - | Resolved | Dec 16, 2020 | - | |
| Oct 5, 2019 | - | TT | Yes | No | - | - | - | Resolved | Oct 24, 2019 | - | |
| Oct 5, 2019 | - | TT | Yes | No | - | - | - | Resolved | Oct 24, 2019 | - | |
| Jul 1, 2019 | Jul 31, 2019 | MON | No | Yes | - | - | - | Resolved | Jul 31, 2019 | - | |
| Jul 1, 2019 | Jul 31, 2019 | MON | No | Yes | - | - | - | Resolved | Jul 31, 2019 | - | |
| Jul 1, 2019 | Jul 31, 2019 | MON | No | Yes | - | - | - | Resolved | Jul 31, 2019 | - | |
| Aug 1, 2017 | Aug 31, 2017 | MCL | Yes | No | - | - | - | Resolved | Aug 31, 2017 | - | |
| Aug 1, 2017 | Aug 31, 2017 | MCL | Yes | No | - | - | - | Resolved | Aug 31, 2017 | - | |
| Aug 1, 2017 | Aug 31, 2017 | MCL | Yes | No | - | - | - | Resolved | Aug 31, 2017 | - | |
| Aug 1, 2013 | Aug 31, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2013 | - | |
| Aug 1, 2013 | Aug 31, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2013 | - | |
| Aug 1, 2013 | Aug 31, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2013 | - | |
| Apr 1, 2005 | Apr 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2005 | - | |
| Apr 1, 2005 | Apr 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2005 | - | |
| Apr 1, 2005 | Apr 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2005 | - | |
| Nov 13, 2001 | - | Other | No | No | - | - | - | Resolved | Apr 18, 2007 | - | |
| Sep 1, 2001 | Sep 30, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2001 | - | |
| Sep 1, 2001 | Sep 30, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2001 | - | |
| Sep 1, 2001 | Sep 30, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2001 | - | |
| Sep 1, 2001 | Sep 30, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MCL | Yes | No | 6.7 | 5 pCi/L | 5 | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MCL | Yes | No | 6.7 | 5 pCi/L | 5 | Resolved | Mar 31, 2001 | - | |
| Jul 1, 2000 | Sep 30, 2000 | MCL | Yes | No | 5.7 | 5 pCi/L | 5 | Resolved | Sep 30, 2000 | - | |
| Jul 1, 2000 | Sep 30, 2000 | MCL | Yes | No | 5.7 | 5 pCi/L | 5 | Resolved | Sep 30, 2000 | - | |
| Jan 17, 2000 | Feb 16, 2000 | Other | No | No | - | 5% of samples | - | Archived | Feb 16, 2000 | - | |
| Dec 13, 1999 | Jan 12, 2000 | Other | No | No | - | 5% of samples | - | Archived | Jan 12, 2000 | - | |
| Nov 14, 1999 | Dec 13, 1999 | Other | No | No | - | TT | - | Archived | Dec 13, 1999 | - | |
| Nov 14, 1999 | Dec 13, 1999 | Other | No | No | - | 5% of samples | - | Archived | Dec 13, 1999 | - | |
| Nov 1, 1999 | Nov 30, 1999 | MR | No | Yes | - | 5% of samples | - | Archived | Nov 30, 1999 | - | |
| Nov 1, 1999 | Nov 30, 1999 | MR | No | Yes | - | 5% of samples | - | Archived | Nov 30, 1999 | - | |
| Oct 10, 1999 | Nov 9, 1999 | Other | No | No | - | 5% of samples | - | Archived | Nov 9, 1999 | - | |
| Oct 9, 1999 | Nov 8, 1999 | Other | No | No | - | 5% of samples | - | Archived | Nov 8, 1999 | - | |
| Oct 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Oct 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 1 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Oct 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Oct 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Oct 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 0.075 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Oct 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 0.075 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Oct 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Oct 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Oct 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Oct 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Oct 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Oct 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Oct 1, 1999 | Oct 31, 1999 | MR | No | Yes | - | 5% of samples | - | Archived | Oct 31, 1999 | - |
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.