HILLSBORO WATER WORKS
Iowa — Community Water System — PWSID: IA4425032
System Information
| PWSID | IA4425032 |
| System Name | HILLSBORO WATER WORKS |
| System Type | Community Water System |
| Water Source | Ground Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 07 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 27, 1979 |
| Last Reported | Dec 19, 2025 |
Location & Contact
| State | Iowa |
| City | WASHINGTON |
| ZIP Code | 52353 |
| Address | ATTN KYLE WELLINGTON |
| Organization | HILLSBORO WATER WORKS |
| Phone | 319-653-1531 |
Population & Service
| Population Served | 163 |
| Service Connections | 130 |
Drinking Water Violations (40)
This water system has 40 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, 2020 | Aug 31, 2020 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2020 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Aug 1, 2020 | Aug 31, 2020 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2020 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Aug 1, 2020 | Aug 31, 2020 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2020 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Aug 1, 2020 | Aug 31, 2020 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2020 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Aug 1, 2020 | Aug 31, 2020 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2020 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Aug 1, 2020 | Aug 31, 2020 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2020 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Aug 1, 2020 | Aug 31, 2020 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2020 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Aug 1, 2020 | Aug 31, 2020 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2020 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Mar 1, 2018 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 1, 2018 | Lead and Copper Rule |
| Mar 1, 2018 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 1, 2018 | Lead and Copper Rule |
| Mar 1, 2018 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 1, 2018 | Lead and Copper Rule |
| Oct 1, 2017 | Sep 30, 2018 | Nitrite | MR | No | Yes | — | 1 mg/L | — | Resolved | Sep 30, 2018 | Nitrate Rule |
| Oct 1, 2017 | Sep 30, 2018 | Nitrite | MR | No | Yes | — | 1 mg/L | — | Resolved | Sep 30, 2018 | Nitrate Rule |
| Oct 1, 2017 | Sep 30, 2018 | Nitrite | MR | No | Yes | — | 1 mg/L | — | Resolved | Sep 30, 2018 | Nitrate Rule |
| Oct 1, 2017 | Sep 30, 2018 | Nitrite | MR | No | Yes | — | 1 mg/L | — | Resolved | Sep 30, 2018 | Nitrate Rule |
| Oct 1, 2016 | Sep 30, 2017 | Nitrite | MR | No | Yes | — | 1 mg/L | — | Resolved | Sep 30, 2017 | Nitrate Rule |
| Oct 1, 2016 | Sep 30, 2017 | Nitrite | MR | No | Yes | — | 1 mg/L | — | Resolved | Sep 30, 2017 | Nitrate Rule |
| Oct 1, 2016 | Sep 30, 2017 | Nitrite | MR | No | Yes | — | 1 mg/L | — | Resolved | Sep 30, 2017 | Nitrate Rule |
| Oct 1, 2016 | Sep 30, 2017 | Nitrite | MR | No | Yes | — | 1 mg/L | — | Resolved | Sep 30, 2017 | Nitrate Rule |
| Jul 1, 2005 | Aug 31, 2007 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2007 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2005 | Aug 31, 2007 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2007 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2005 | Aug 31, 2007 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2007 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2005 | Aug 31, 2007 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2007 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2005 | Aug 31, 2007 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2007 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Aug 1, 1993 | Aug 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Aug 31, 1993 | Total Coliform Rule |
| Aug 1, 1993 | Aug 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Aug 31, 1993 | Total Coliform Rule |
| Jul 1, 1993 | Jul 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Jul 31, 1993 | Total Coliform Rule |
| Jul 1, 1993 | Jul 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Jul 31, 1993 | Total Coliform Rule |
| Jul 1, 1993 | Jul 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Jul 31, 1993 | Total Coliform Rule |
| Jul 1, 1993 | Jul 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Jul 31, 1993 | Total Coliform Rule |
| Nov 1, 1991 | Nov 30, 1991 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 1991 | Total Coliform Rule |
| Nov 1, 1991 | Nov 30, 1991 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 1991 | Total Coliform Rule |
| Nov 1, 1991 | Nov 30, 1991 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 1991 | Total Coliform Rule |
| — | — | — | No | No | — | — | — | — | — | — | |
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| — | — | — | 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.