An independent public resourceEnglish Español
PublicWater Watch

Union PWS

Published drinking-water records and contacts for Union PWS. System MO6010801. Review sources and dates; not a real-time water assessment.

System ID
MO6010801
State or territory
MO
Published population served
12348
System type (source code)
CWS

Published records and dates

Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.

Published testing results

Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.

“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example

EPA UCMR 5 — most recent imported sample per substance
SubstancePublished resultReporting limitSample dateSampling location
11Cl-PF3OUdS< 0.005 µg/L0.005 µg/L2024-12-18UNION PWS / WL14312
4:2 FTS< 0.003 µg/L0.003 µg/L2024-12-18UNION PWS / WL18410
6:2 FTS< 0.005 µg/L0.005 µg/L2024-12-18UNION PWS / TP18827
8:2 FTS< 0.005 µg/L0.005 µg/L2024-12-18UNION PWS / WL14360
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2024-12-18UNION PWS / WL14312
ADONA< 0.003 µg/L0.003 µg/L2024-12-18UNION PWS / WL14369
HFPO-DA< 0.005 µg/L0.005 µg/L2024-12-18UNION PWS / WL14360
NEtFOSAA< 0.005 µg/L0.005 µg/L2024-12-18UNION PWS / WL14369
NFDHA< 0.02 µg/L0.02 µg/L2024-12-18UNION PWS / WL14360
NMeFOSAA< 0.006 µg/L0.006 µg/L2024-12-18UNION PWS / WL14312
PFBA< 0.005 µg/L0.005 µg/L2024-12-18UNION PWS / TP12742
PFBS< 0.003 µg/L0.003 µg/L2024-12-18UNION PWS / WL14360
PFDA< 0.003 µg/L0.003 µg/L2024-12-18UNION PWS / WL14360
PFDoA< 0.003 µg/L0.003 µg/L2024-12-18UNION PWS / TP18827
PFEESA< 0.003 µg/L0.003 µg/L2024-12-18UNION PWS / WL18410
PFHpA< 0.003 µg/L0.003 µg/L2024-12-18UNION PWS / WL14312
PFHpS< 0.003 µg/L0.003 µg/L2024-12-18UNION PWS / WL14360
PFHxA< 0.003 µg/L0.003 µg/L2024-12-18UNION PWS / WL18410
PFHxS< 0.003 µg/L0.003 µg/L2024-12-18UNION PWS / WL14312
PFMBA< 0.003 µg/L0.003 µg/L2024-12-18UNION PWS / WL14312
PFMPA< 0.004 µg/L0.004 µg/L2024-12-18UNION PWS / WL14369
PFNA< 0.004 µg/L0.004 µg/L2024-12-18UNION PWS / TP18827
PFOA< 0.004 µg/L0.004 µg/L2024-12-18UNION PWS / WL14312
PFOS< 0.004 µg/L0.004 µg/L2024-12-18UNION PWS / WL18410
PFPeA< 0.003 µg/L0.003 µg/L2024-12-18UNION PWS / WL14369
PFPeS< 0.004 µg/L0.004 µg/L2024-12-18UNION PWS / WL14360
PFTA< 0.008 µg/L0.008 µg/L2024-12-18UNION PWS / TP12742
PFTrDA< 0.007 µg/L0.007 µg/L2024-12-18UNION PWS / TP18827
PFUnA< 0.002 µg/L0.002 µg/L2024-12-18UNION PWS / WL18410
lithium< 9 µg/L9 µg/L2024-12-18UNION PWS / TP18827

Download all EPA UCMR 5 records (CSV)

Lead and copper: 90th-percentile summaries

These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile

Eight most recent imported monitoring summaries
SubstancePublished 90th percentileMonitoring periodSource quarter
Lead (PB90) 0.00248 mg/L2022-01-01 – 2024-12-312026Q3
Lead (PB90) 0.00227 mg/L2019-01-01 – 2021-12-312026Q3
Lead (PB90) 0.00227 mg/L2019-01-01 – 2021-12-312026Q3
Lead (PB90) 0.00269 mg/L2017-01-01 – 2019-12-312026Q3
Lead (PB90) 0.00269 mg/L2016-01-01 – 2018-12-312026Q3
Lead (PB90) 0.00246 mg/L2014-01-01 – 2016-12-312026Q3
Lead (PB90) 0.00246 mg/L2013-01-01 – 2015-12-312026Q3
Lead (PB90) 0.00313 mg/L2011-01-01 – 2013-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
ADONA< 3 NG/L2024-12-18WELL # 6 4032 HWY A / Missouri DNR PFAS samples — non-UCMR classes
PERFLUORO PFEESA< 3 NG/L2024-12-18WELL # 1 715 CLEARVIEW DR / Missouri DNR PFAS samples — non-UCMR classes
PERFLUOROTRIDECANOIC ACID (PFTRDA)< 7 NG/L2024-12-18WELL # 6 4032 HWY A / Missouri DNR PFAS samples — non-UCMR classes
HFPO-DA< 5 NG/L2024-12-18WELL # 1 715 CLEARVIEW DR / Missouri DNR PFAS samples — non-UCMR classes
PERFLUORO PFEESA< 3 NG/L2024-12-18WELL #7 1163 OLD HWY 50 / Missouri DNR PFAS samples — non-UCMR classes
PERFLUORODODECANOIC ACID (PFDOA)< 3 NG/L2024-12-18WELL # 1 715 CLEARVIEW DR / Missouri DNR PFAS samples — non-UCMR classes
PERFLUORODODECANOIC ACID (PFDOA)< 3 NG/L2024-12-18WELL # 2 600 W PARK RD / Missouri DNR PFAS samples — non-UCMR classes
PERFLUOROPENTANOIC ACID (PFPEA)< 3 NG/L2024-12-18WELL # 3 720 E STATE ST / Missouri DNR PFAS samples — non-UCMR classes
PERFLUOROPENTANOIC ACID (PFPEA)< 3 NG/L2024-12-18WELL #5 IND PARK 1551 PRAIRIE DELL RD / Missouri DNR PFAS samples — non-UCMR classes
PERFLUOROBUTANE SULFONIC ACID (PFBS)< 2.9 NG/L2024-12-18WELL # 1 715 CLEARVIEW DR / Missouri DNR PFAS samples — non-UCMR classes
PERFLUOROHEXANE SULFONIC ACID 4:2 FTS< 3 NG/L2024-12-18WELL # 2 600 W PARK RD / Missouri DNR PFAS samples — non-UCMR classes
PERFLUOROPENTANESULFONIC ACID (PFPES)< 4 NG/L2024-12-18WELL #5 IND PARK 1551 PRAIRIE DELL RD / Missouri DNR PFAS samples — non-UCMR classes

State sampling points can include untreated water. Publisher qualifiers and units are retained; consult the full source notes before interpreting a record.

Download state records with source notes (CSV)

Published compliance history

3 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.

Twenty most recent imported compliance records
Rule / recordPeriodRecorded statusHealth-based (EPA classification)Source quarter
Lead and Copper Rule Revisions / Notification, Known or Potential LSL2025-07-02 – —ResolvedNo2026Q3
Revised Total Coliform Rule / Monitoring, Routine (RTCR)2025-02-01 – 2025-02-28ResolvedNo2026Q3
Consumer Confidence Rule / Consumer Confidence Report Inadequate Reporting2021-07-01 – —ResolvedNo2026Q3

Source dates and refresh checks

A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.

Administrative contact (EPA filing)

Zimmermann, Jonathan: 636-583-1805

An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.

Official state resources · How to read these records