MO AMERICAN IRONTON
PWSID: MO4010402 · Chesterfield, MO · Serves 1,460 people
According to EPA Safe Drinking Water Information System (SDWIS), MO AMERICAN IRONTON (PWSID MO4010402) in Chesterfield, MO is listed as a CWS water system covering about 1,460 people. The same extract lists 32 health-based violation records spanning 2016-2025. Those 32 health-based rows for MO AMERICAN IRONTON cover contaminants such as TTHM, Total Haloacetic Acids (HAA5), Stage 1 Disinfectants and Disinfection Byproducts Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
MO AMERICAN IRONTON has 32 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 3 distinct EPA contaminant codes appear in this system's record, including TTHM, Total Haloacetic Acids (HAA5), Stage 1 Disinfectants and Disinfection Byproducts Rule. Recorded violations span 2016–2025. Day-to-day primacy enforcement for this system runs through the Missouri drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Missouri state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- MO4010402
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Chesterfield, MO
- Population Served
- 1,460
- Health Violations
- Yes (32)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| TTHM | 27 | 27 |
| Total Haloacetic Acids (HAA5) | 3 | 3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | 2 | 2 |
Violation History (32)
| Contaminant | Health | Date |
|---|---|---|
| TTHM | Yes | Oct 1, 2025 |
| TTHM | Yes | Jul 1, 2025 |
| TTHM | Yes | Jul 1, 2025 |
| TTHM | Yes | Jul 1, 2024 |
| TTHM | Yes | Jul 1, 2024 |
| TTHM | Yes | Jul 1, 2024 |
| TTHM | Yes | Jul 1, 2024 |
| TTHM | Yes | Apr 1, 2024 |
| TTHM | Yes | Apr 1, 2024 |
| TTHM | Yes | Apr 1, 2024 |
| TTHM | Yes | Apr 1, 2024 |
| TTHM | Yes | Apr 1, 2024 |
| TTHM | Yes | Jan 1, 2024 |
| TTHM | Yes | Jan 1, 2024 |
| TTHM | Yes | Jan 1, 2024 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2024 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2024 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2024 |
| TTHM | Yes | Oct 1, 2023 |
| TTHM | Yes | Oct 1, 2023 |
| TTHM | Yes | Oct 1, 2023 |
| TTHM | Yes | Oct 1, 2023 |
| TTHM | Yes | Oct 1, 2023 |
| TTHM | Yes | Jul 1, 2022 |
| TTHM | Yes | Jul 1, 2022 |
| TTHM | Yes | Jul 1, 2022 |
| TTHM | Yes | Apr 1, 2022 |
| TTHM | Yes | Apr 1, 2022 |
| TTHM | Yes | Apr 1, 2022 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | Feb 1, 2022 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | Feb 1, 2022 |
| TTHM | Yes | Apr 1, 2016 |
Frequently Asked Questions
What does EPA SDWIS list for MO AMERICAN IRONTON?
How many people does MO AMERICAN IRONTON serve?
What violations does MO AMERICAN IRONTON have?
What contaminants have been found in MO AMERICAN IRONTON water?
Compare beyond Missouri
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest MO AMERICAN IRONTON on cumulative violation count (32) and EPA-reported population served (1,460). Violation-count peers include CLARENDON WATERWORKS, WEST HELENA WATER WORKS, REYNOLDS. Population peers include OURAY CITY OF, CRAWFORD CO RWD 2, SEDGWICK CO RWD 2.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
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About This Data
MO AMERICAN IRONTON (MO4010402) is drawn from EPA SDWIS. Nearby county systems in this extract include MO AMERICAN ST LOUIS ST CHARLES COUNTIES; KIRKWOOD PWS; JEFFERSON COUNTY PWSD 2; MO AMERICAN MEXICO. Health-based rows (32 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.