EL DORADO WATERWORKS
Arkansas - Community Water System - PWSID: AR0000550
System Information
| PWSID | AR0000550 |
| System Name | EL DORADO WATERWORKS |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 06 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 29, 1979 |
| Last Reported | Feb 18, 2026 |
Location & Contact
| State | Arkansas |
| City | EL DORADO |
| ZIP Code | 71730 |
| Address | P O BOX 1587 |
| Organization | MCMAHAN, MICHAEL |
| Phone | 870-862-1912 |
Population & Service
| Population Served | 17,932 |
| Service Connections | 8,333 |
Drinking Water Violations (48)
This water system has 48 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, 2025 | Sep 30, 2025 | MCL | Yes | No | 81 UG/L | 0.080 mg/L | 80 | Archived | Sep 30, 2025 | - | |
| Nov 1, 2022 | Nov 30, 2022 | MON | No | No | - | - | - | Resolved | Nov 30, 2022 | - | |
| Jan 1, 2021 | Mar 31, 2021 | MCL | Yes | No | 9.8 MFL | 7 MFL | 7 | Resolved | Mar 31, 2021 | - | |
| Jan 1, 2021 | Mar 31, 2021 | MCL | Yes | No | 9.8 MFL | 7 MFL | 7 | Resolved | Mar 31, 2021 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MCL | Yes | No | 45 MFL | 7 MFL | 7 | Resolved | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MCL | Yes | No | 45 MFL | 7 MFL | 7 | Resolved | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MCL | Yes | No | 45 MFL | 7 MFL | 7 | Resolved | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MCL | Yes | No | 45 MFL | 7 MFL | 7 | Resolved | Dec 31, 2020 | - | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | 45 MFL | 7 MFL | 7 | Resolved | Sep 30, 2020 | - | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | 45 MFL | 7 MFL | 7 | Resolved | Sep 30, 2020 | - | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | 45 MFL | 7 MFL | 7 | Resolved | Sep 30, 2020 | - | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | 45 MFL | 7 MFL | 7 | Resolved | Sep 30, 2020 | - | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | 45 MFL | 7 MFL | 7 | Resolved | Sep 30, 2020 | - | |
| Dec 1, 2009 | Dec 31, 2009 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2009 | - | |
| Dec 1, 2009 | Dec 31, 2009 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2009 | - | |
| Dec 1, 2009 | Dec 31, 2009 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2009 | - | |
| Jun 1, 2008 | Jun 30, 2008 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2008 | - | |
| Jun 1, 2008 | Jun 30, 2008 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2008 | - | |
| Jun 1, 2008 | Jun 30, 2008 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Apr 30, 2008 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2008 | - | |
| Apr 1, 2008 | Apr 30, 2008 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2008 | - | |
| Apr 1, 2008 | Apr 30, 2008 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2008 | - | |
| Nov 1, 2007 | Nov 30, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2007 | - | |
| Nov 1, 2007 | Nov 30, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2007 | - | |
| Nov 1, 2007 | Nov 30, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2007 | - | |
| Nov 1, 2007 | Nov 30, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2007 | - | |
| Nov 1, 2007 | Nov 30, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2007 | - | |
| Nov 1, 2007 | Nov 30, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2007 | - | |
| Jul 1, 2007 | Jul 31, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2007 | - | |
| Jul 1, 2007 | Jul 31, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2007 | - | |
| Jul 1, 2007 | Jul 31, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2007 | - | |
| Jul 1, 2007 | Jul 31, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2007 | - | |
| Jul 1, 2007 | Jul 31, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2007 | - | |
| Jul 1, 2007 | Jul 31, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2007 | - | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 85 | 0.080 mg/L | - | Resolved | Jun 30, 2007 | - | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 85 | 0.080 mg/L | - | Resolved | Jun 30, 2007 | - | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 85 | 0.080 mg/L | - | Resolved | Jun 30, 2007 | - | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 85 | 0.080 mg/L | - | Resolved | Jun 30, 2007 | - | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 85 | 0.080 mg/L | - | Resolved | Jun 30, 2007 | - | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 85 | 0.080 mg/L | - | Resolved | Jun 30, 2007 | - | |
| Aug 1, 2003 | Aug 31, 2003 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2003 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - |
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.