KEOSAUQUA WATER WORKS
Iowa — Community Water System — PWSID: IA8938026
System Information
| PWSID | IA8938026 |
| System Name | KEOSAUQUA WATER WORKS |
| System Type | Community Water System |
| Water Source | Surface 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 | KEOSAUQUA |
| ZIP Code | 52565 |
| Address | ATTN JON THORNSBERRY WATER SUPT |
| Organization | KEOSAUQUA WATER WORKS |
| Phone | 319-293-3536 |
Population & Service
| Population Served | 961 |
| Service Connections | 583 |
Drinking Water Violations (31)
This water system has 31 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 1, 2023 | Apr 30, 2023 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Apr 30, 2023 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2023 | Apr 30, 2023 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Apr 30, 2023 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2023 | Apr 30, 2023 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Apr 30, 2023 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2023 | Apr 30, 2023 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Apr 30, 2023 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2023 | Apr 30, 2023 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Apr 30, 2023 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2023 | Apr 30, 2023 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Apr 30, 2023 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2023 | Apr 30, 2023 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Apr 30, 2023 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2023 | Apr 30, 2023 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Apr 30, 2023 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Mar 1, 2017 | Mar 31, 2017 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Mar 31, 2017 | Revised Total Coliform Rule |
| Mar 1, 2017 | Mar 31, 2017 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Mar 31, 2017 | Revised Total Coliform Rule |
| Mar 1, 2017 | Mar 31, 2017 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Mar 31, 2017 | Revised Total Coliform Rule |
| Mar 1, 2017 | Mar 31, 2017 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Mar 31, 2017 | Revised Total Coliform Rule |
| Feb 1, 1996 | Feb 29, 1996 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Feb 29, 1996 | Total Coliform Rule |
| Feb 1, 1996 | Feb 29, 1996 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Feb 29, 1996 | Total Coliform Rule |
| Feb 1, 1996 | Feb 29, 1996 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Feb 29, 1996 | Total Coliform Rule |
| Feb 1, 1996 | Feb 29, 1996 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Feb 29, 1996 | Total Coliform Rule |
| Dec 1, 1991 | Dec 31, 1991 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 1991 | Total Coliform Rule |
| Dec 1, 1991 | Dec 31, 1991 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 1991 | Total Coliform Rule |
| Dec 1, 1991 | Dec 31, 1991 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 1991 | Total Coliform Rule |
| Dec 1, 1991 | Dec 31, 1991 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 1991 | Total Coliform Rule |
| Oct 1, 1984 | Sep 30, 1985 | Fluoride | MCL | Yes | No | 2.3 | 4.0 mg/L | 2.2 | Archived | Sep 30, 1985 | Inorganic Chemicals |
| Oct 1, 1983 | Sep 30, 1984 | Fluoride | MCL | Yes | No | 2.5 | 4.0 mg/L | 2 | Archived | Sep 30, 1984 | Inorganic Chemicals |
| Dec 19, 1978 | Oct 18, 1980 | Fluoride | MCL | Yes | No | 2.4 | 4.0 mg/L | 2 | Archived | Oct 18, 1980 | Inorganic Chemicals |
| Oct 23, 1978 | Oct 22, 1979 | Fluoride | MCL | Yes | No | 2.4 | 4.0 mg/L | 2 | Archived | Oct 22, 1979 | Inorganic Chemicals |
| Oct 23, 1978 | Oct 22, 1979 | Fluoride | MCL | Yes | No | 2.4 | 4.0 mg/L | 141.11 | Archived | Oct 22, 1979 | Inorganic Chemicals |
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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.