Jefferson County Pwsd 12
Published drinking-water records and contacts for Jefferson County Pwsd 12. System MO6024304. Review sources and dates; not a real-time water assessment.
- System ID
- MO6024304
- State or territory
- MO
- Published population served
- 3300
- System type (source code)
- CWS
Published records and dates
- Lead and copper monitoring summaries: 20 — 1993-07-01 – 2026-12-31
- Missouri DNR PFAS samples — non-UCMR classes: 54 — 2022-05-02 – 2022-05-02
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
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
| Substance | Published 90th percentile | Monitoring period | Source quarter |
|---|---|---|---|
| Lead (PB90) | 0.00136 mg/L | 2024-01-01 – 2026-12-31 | 2026Q3 |
| Lead (PB90) | 0.00319 mg/L | 2021-01-01 – 2023-12-31 | 2026Q3 |
| Lead (PB90) | 0.00319 mg/L | 2021-01-01 – 2023-12-31 | 2026Q3 |
| Lead (PB90) | 0.00989 mg/L | 2020-01-01 – 2022-12-31 | 2026Q3 |
| Lead (PB90) | 0.00989 mg/L | 2018-01-01 – 2020-12-31 | 2026Q3 |
| Lead (PB90) | 0.00377 mg/L | 2017-01-01 – 2019-12-31 | 2026Q3 |
| Lead (PB90) | 0.00377 mg/L | 2015-01-01 – 2017-12-31 | 2026Q3 |
| Lead (PB90) | 0.00678 mg/L | 2014-01-01 – 2016-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| 11CL-PF3OUDS | < 1.9 NG/L | 2022-05-02 | WELL # 2 - 12301 HWY TT / Missouri DNR PFAS samples — non-UCMR classes |
| PERFLUOROCTANE SULFONIC ACID (PFOS) | < 1.9 NG/L | 2022-05-02 | WELL # 2 - 12301 HWY TT / Missouri DNR PFAS samples — non-UCMR classes |
| PERFLUOROTRIDECANOIC ACID (PFTRDA) | < 1.9 NG/L | 2022-05-02 | WELL # 4 TREATMENT / Missouri DNR PFAS samples — non-UCMR classes |
| PERFLUOROTETRADECANOIC ACID (PFTA) | < 1.9 NG/L | 2022-05-02 | WELL # 4 TREATMENT / Missouri DNR PFAS samples — non-UCMR classes |
| ADONA | < 1.9 NG/L | 2022-05-02 | WELL # 2 - 12301 HWY TT / Missouri DNR PFAS samples — non-UCMR classes |
| PERFLUOROHEXANOIC ACID (PFHXA) | < 1.9 NG/L | 2022-05-02 | WELL # 2 - 12301 HWY TT / Missouri DNR PFAS samples — non-UCMR classes |
| PERFLUOROCTANOIC ACID (PFOA) | < 1.9 NG/L | 2022-05-02 | TREATMENT WELL #3 / Missouri DNR PFAS samples — non-UCMR classes |
| PERFLUORONONANOIC ACID (PFNA) | < 1.9 NG/L | 2022-05-02 | WELL # 2 - 12301 HWY TT / Missouri DNR PFAS samples — non-UCMR classes |
| PERFLUOROUNDECANOIC ACID (PFUNA) | < 1.9 NG/L | 2022-05-02 | TREATMENT WELL #3 / Missouri DNR PFAS samples — non-UCMR classes |
| PERFLUOROTETRADECANOIC ACID (PFTA) | < 1.9 NG/L | 2022-05-02 | WELL # 2 - 12301 HWY TT / Missouri DNR PFAS samples — non-UCMR classes |
| NETFOSAA | < 1.9 NG/L | 2022-05-02 | WELL # 2 - 12301 HWY TT / Missouri DNR PFAS samples — non-UCMR classes |
| NETFOSAA | < 1.9 NG/L | 2022-05-02 | TREATMENT WELL #3 / 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
0 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.
Source dates and refresh checks
A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.
- EPA SDWIS lead/copper summaries and service areas — source period: — – —; last checked: 2026-10-17
- EPA SDWIS contacts and compliance records — source period: — – —; last checked: 2026-10-17
- EPA UCMR 5 sample results — source period: 2023-01-03 – 2026-06-17; last checked: 2026-10-17
- Missouri DNR PFAS samples — non-UCMR classes — last successful check: 2026-10-15
Administrative contact (EPA filing)
Bryant, Brad: 636-937-9697
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.