Union Water Quality
Missouri
According to EPA SDWIS, Union, Missouri is served by 10 community water systems covering about 13,431 people. The same extract lists 14 health-based violation records, most recently coded 0700 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Union, Missouri is delivered through 10 EPA-regulated community water systems serving an estimated 13,431 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 14 violation records across the 10 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 3 distinct EPA contaminant codes: Groundwater Rule, Revised Total Coliform Rule, Stage 1 Disinfectants and Disinfection Byproducts Rule. 4 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Missouri drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| UNION PWS | 12,348 | 0 | Clean |
| ARGYLE ESTATES WATER SUPPLY | 380 | 6 | Health |
| SPRING MEADOWS MHP | 135 | 2 | Health |
| BOURBEUSE MHP | 125 | 0 | Clean |
| HOLTGREWE FARMS SUBDIVISION | 110 | 0 | Clean |
| TWMP LLC | 100 | 0 | Clean |
| WEBER HILL MHP | 80 | 5 | Health |
| SUNSET MHP | 75 | 0 | Clean |
| SHADY LANE TRAILER PARK | 48 | 1 | Health |
| PRAIRIE DELL MHP | 30 | 0 | Clean |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| WEBER HILL MHP | Groundwater Rule | 2025-09-27 |
| ARGYLE ESTATES WATER SUPPLY | Revised Total Coliform Rule | 2023-08-28 |
| ARGYLE ESTATES WATER SUPPLY | Revised Total Coliform Rule | 2023-08-28 |
| WEBER HILL MHP | Groundwater Rule | 2023-01-10 |
| WEBER HILL MHP | Groundwater Rule | 2023-01-10 |
| WEBER HILL MHP | Groundwater Rule | 2023-01-10 |
| ARGYLE ESTATES WATER SUPPLY | Groundwater Rule | 2021-08-27 |
| ARGYLE ESTATES WATER SUPPLY | Groundwater Rule | 2021-08-27 |
| ARGYLE ESTATES WATER SUPPLY | Revised Total Coliform Rule | 2019-09-06 |
| ARGYLE ESTATES WATER SUPPLY | Revised Total Coliform Rule | 2019-09-06 |
| SPRING MEADOWS MHP | Revised Total Coliform Rule | 2019-08-01 |
| WEBER HILL MHP | Revised Total Coliform Rule | 2017-06-02 |
| SPRING MEADOWS MHP | Stage 1 Disinfectants and Disinfection Byproducts Rule | 2011-11-01 |
| SHADY LANE TRAILER PARK | Groundwater Rule | 2011-05-05 |
What are Union's health-based records for?
Union's health-based violation records carry 3 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Groundwater Rule | 7 | 3 |
| Revised Total Coliform Rule | 6 | 3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | 1 | 1 |
TRI Facilities in Union
| Facility | Total Releases |
|---|---|
| Pharma Tech Industries | 10.6K lbs |
| Heat & Control Inc. | 30 lbs |
| Gateway Extrusions Ltd. | 0 lbs |
| Siesco Valley Screw Products | 0 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Union, Missouri? ▼
How many water violations does Union have in this EPA extract? ▼
What contaminants were found in Union water? ▼
How many water systems serve Union? ▼
Where does Union get its drinking water? ▼
Are there pollution sources near Union? ▼
How does Union compare in Missouri?
Of the 676 Missouri places with at least one community water system on file, Union ranks #16 by number of systems (10).
Either side of it: Shell Knob (11), Sullivan (10), Pacific (9), Reeds Spring (9)
About This Data
Figures here are the current EPA SDWIS extract joined to the 10 community water systems whose service area lists Union, ranked against the 676 Missouri places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.