PATAGONIA WATER DEPARTMENT
Arizona — Community Water System — PWSID: AZ0412006
System Information
| PWSID | AZ0412006 |
| System Name | PATAGONIA WATER DEPARTMENT |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Oct 5, 1979 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | Arizona |
| City | PATAGONIA |
| ZIP Code | 85624 |
| Address | GEORGE P DEITHORN |
| Organization | DEITHORN, GEORGE P |
| Phone | 520-604-0510 |
Population & Service
| Population Served | 819 |
| Service Connections | 456 |
Drinking Water Violations (94)
This water system has 94 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, 2024 | Jul 31, 2024 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jul 31, 2024 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2024 | Jul 31, 2024 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jul 31, 2024 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2024 | Jul 31, 2024 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jul 31, 2024 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2024 | Jul 31, 2024 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jul 31, 2024 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2023 | Mar 31, 2023 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2023 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2023 | Mar 31, 2023 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2023 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2022 | Jun 30, 2022 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2022 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2022 | Jun 30, 2022 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2022 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2021 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 7, 2021 | Consumer Confidence Rule |
| Jul 1, 2021 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 7, 2021 | Consumer Confidence Rule |
| Oct 2, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Nov 2, 2020 | Consumer Confidence Rule |
| Oct 2, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Nov 2, 2020 | Consumer Confidence Rule |
| Feb 17, 2020 | — | Public Notice | Other | No | No | — | — | — | Resolved | Apr 16, 2020 | Public Notice Rule and Revised PN Rule |
| Feb 17, 2020 | — | Public Notice | Other | No | No | — | — | — | Resolved | Apr 16, 2020 | Public Notice Rule and Revised PN Rule |
| Jan 1, 2020 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Apr 15, 2020 | Lead and Copper Rule |
| Jan 1, 2020 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Apr 15, 2020 | Lead and Copper Rule |
| Oct 1, 2018 | Dec 31, 2018 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2018 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2018 | Dec 31, 2018 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2018 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2017 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 18, 2017 | Consumer Confidence Rule |
| Jul 1, 2017 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 18, 2017 | Consumer Confidence Rule |
| Oct 1, 2016 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 16, 2016 | Consumer Confidence Rule |
| Oct 1, 2016 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 16, 2016 | Consumer Confidence Rule |
| Jul 1, 2016 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Feb 15, 2017 | Consumer Confidence Rule |
| Oct 1, 2015 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Nov 4, 2015 | Consumer Confidence Rule |
| Jul 1, 2015 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Nov 4, 2015 | Consumer Confidence Rule |
| Jul 1, 2014 | Jul 31, 2014 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2014 | Total Coliform Rule |
| Jul 1, 2014 | Jul 31, 2014 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2014 | Total Coliform Rule |
| Oct 1, 2013 | Dec 31, 2013 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2013 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Mar 19, 2014 | Consumer Confidence Rule |
| Jan 1, 2013 | Mar 31, 2013 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2013 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2012 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Aug 16, 2012 | Consumer Confidence Rule |
| Jan 1, 2012 | Mar 31, 2012 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2012 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2011 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 15, 2011 | Consumer Confidence Rule |
| Jun 1, 2011 | Jun 30, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2011 | Total Coliform Rule |
| Jun 1, 2011 | Jun 30, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2011 | Total Coliform Rule |
| Jan 1, 2011 | Dec 31, 2011 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2011 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2011 | Dec 31, 2011 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2011 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2010 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Aug 4, 2010 | Consumer Confidence Rule |
| May 1, 2010 | May 31, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2010 | Total Coliform Rule |
| May 1, 2010 | May 31, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2010 | Total Coliform Rule |
| Jul 1, 2009 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Oct 26, 2009 | Consumer Confidence Rule |
| Jan 1, 2009 | Dec 31, 2009 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2009 | Nitrate Rule |
| Jan 1, 2009 | Dec 31, 2009 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2009 | Nitrate Rule |
| Oct 1, 2008 | Dec 31, 2008 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2008 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2008 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Oct 26, 2009 | Consumer Confidence Rule |
| Feb 1, 2008 | Feb 29, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Feb 29, 2008 | Total Coliform Rule |
| Jan 1, 2008 | Jan 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2008 | Total Coliform Rule |
| Jul 1, 2007 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Dec 3, 2008 | Consumer Confidence Rule |
| Jul 1, 2007 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Dec 3, 2008 | Consumer Confidence Rule |
| Jan 1, 2007 | Dec 31, 2007 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2007 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
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.