No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting April 2024.
Serves about 206 people (98 connections) with surface water bought from Pike County PWSD 1.
From EPA's record for MO6010902. PurityMap is independent of Silex PWS.
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24 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From April 2024 | Combined radium-226/228 | 6.58 pCi/L | 5 pCi/L | Resolved |
| From January 2024 | Combined radium-226/228 | 6.2 pCi/L | 5 pCi/L | Resolved |
| From October 2023 | Combined radium-226/228 | 6.2 pCi/L | 5 pCi/L | Resolved |
| From July 2023 | Combined radium-226/228 | 5.5 pCi/L | 5 pCi/L | Resolved |
| From April 2023 | Combined radium-226/228 | 5.8 pCi/L | 5 pCi/L | Resolved |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From January 2023 | Combined radium-226/228 | 5.55 pCi/L | 5 pCi/L | Resolved |
| From October 2022 | Combined radium-226/228 | 5.6 pCi/L | 5 pCi/L | Resolved |
| From July 2022 | Combined radium-226/228 | 5.75 pCi/L | 5 pCi/L | Resolved |
| From April 2022 | Stage 1 Disinfectants and Disinfection Byproducts Rule | – | – | Resolved |
| From April 2022 | Combined radium-226/228 | 5.87 pCi/L | 5 pCi/L | Resolved |
| From January 2022 | Combined radium-226/228 | 6.2 pCi/L | 5 pCi/L | Resolved |
| From October 2021 | Combined radium-226/228 | 5.93 pCi/L | 5 pCi/L | Resolved |
| From July 2021 | Combined radium-226/228 | 5.63 pCi/L | 5 pCi/L | Resolved |
| From April 2021 | Combined radium-226/228 | 5.5 pCi/L | 5 pCi/L | Resolved |
| From February 2021 | Groundwater Rule | – | – | Resolved |
| From February 2020 | Stage 1 Disinfectants and Disinfection Byproducts Rule | – | – | Resolved |
| From July 2018 | Combined radium-226/228 | 5.83 pCi/L | 5 pCi/L | Resolved |
| From April 2018 | Combined radium-226/228 | 5.85 pCi/L | 5 pCi/L | Resolved |
| From January 2018 | Combined radium-226/228 | 5.6 pCi/L | 5 pCi/L | Resolved |
| From October 2017 | Combined radium-226/228 | 5.85 pCi/L | 5 pCi/L | Resolved |
| From August 2017 | Groundwater Rule | – | – | Resolved |
| From April 2017 | Combined radium-226/228 | 5.58 pCi/L | 5 pCi/L | Resolved |
| From January 2017 | Combined radium-226/228 | 5.78 pCi/L | 5 pCi/L | Resolved |
| From October 2016 | Combined radium-226/228 | 5.63 pCi/L | 5 pCi/L | Resolved |
No lab results for other contaminants (like PFAS) are on file for this system. EPA required that testing from systems serving more than 3,300 people, plus a sample of smaller ones.
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →Silex PWS's phone number on EPA record is 636-278-0622. Its mailing address is 14 N 1ST ST, PO BOX 191, SILEX, MO 63377-0000.
According to EPA's record, Silex PWS uses surface water bought from Pike County PWSD 1.
EPA's record shows 24 health-based violations for Silex PWS in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The latest legal-limit breach on record was in the period starting April 2024. EPA also lists 17 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Silex PWS's latest lead and copper round, which ended in June 2026, was 2.09 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Silex PWS. Its phone number on EPA record is 636-278-0622. Its mailing address on EPA record is 14 N 1ST ST, PO BOX 191, SILEX, MO 63377-0000. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.