City of Bay St Louis
Published drinking-water records and contacts for City of Bay St Louis. System MS0230001. Review sources and dates; not a real-time water assessment.
- System ID
- MS0230001
- State or territory
- MS
- Published population served
- 9284
- System type (source code)
- CWS
Published records and dates
- PFAS / lithium (EPA UCMR 5): 240 — 2024-02-28 – 2025-01-30
- Lead and copper monitoring summaries: 14 — 1992-07-01 – 2024-12-31
- Mississippi selected chemical sample panels: 73 — 2026-07-08 – 2026-09-14
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
| Substance | Published result | Reporting limit | Sample date | Sampling location |
|---|---|---|---|---|
| 11Cl-PF3OUdS | < 0.005 µg/L | 0.005 µg/L | 2025-01-30 | Easterbrook Street Well / SP0003 |
| 4:2 FTS | < 0.003 µg/L | 0.003 µg/L | 2025-01-30 | Easterbrook Street Well / SP0003 |
| 6:2 FTS | < 0.005 µg/L | 0.005 µg/L | 2025-01-30 | Easterbrook Street Well / SP0003 |
| 8:2 FTS | < 0.005 µg/L | 0.005 µg/L | 2025-01-30 | Easterbrook Street Well / SP0003 |
| 9Cl-PF3ONS | < 0.002 µg/L | 0.002 µg/L | 2025-01-30 | St. Charles Street Well / SP0001 |
| ADONA | < 0.003 µg/L | 0.003 µg/L | 2025-01-30 | St. Charles Street Well / SP0001 |
| HFPO-DA | < 0.005 µg/L | 0.005 µg/L | 2025-01-30 | St. Charles Street Well / SP0001 |
| NEtFOSAA | < 0.005 µg/L | 0.005 µg/L | 2025-01-15 | Easterbrook Street Well / SP0003 |
| NFDHA | < 0.02 µg/L | 0.02 µg/L | 2025-01-30 | Easterbrook Street Well / SP0003 |
| NMeFOSAA | < 0.006 µg/L | 0.006 µg/L | 2025-01-15 | St. Charles Street Well / SP0001 |
| PFBA | < 0.005 µg/L | 0.005 µg/L | 2025-01-30 | Easterbrook Street Well / SP0003 |
| PFBS | < 0.003 µg/L | 0.003 µg/L | 2025-01-30 | Easterbrook Street Well / SP0003 |
| PFDA | < 0.003 µg/L | 0.003 µg/L | 2025-01-30 | St. Charles Street Well / SP0001 |
| PFDoA | < 0.003 µg/L | 0.003 µg/L | 2025-01-30 | St. Charles Street Well / SP0001 |
| PFEESA | < 0.003 µg/L | 0.003 µg/L | 2025-01-30 | St. Charles Street Well / SP0001 |
| PFHpA | < 0.003 µg/L | 0.003 µg/L | 2025-01-30 | St. Charles Street Well / SP0001 |
| PFHpS | < 0.003 µg/L | 0.003 µg/L | 2025-01-30 | Easterbrook Street Well / SP0003 |
| PFHxA | < 0.003 µg/L | 0.003 µg/L | 2025-01-30 | St. Charles Street Well / SP0001 |
| PFHxS | < 0.003 µg/L | 0.003 µg/L | 2025-01-30 | St. Charles Street Well / SP0001 |
| PFMBA | < 0.003 µg/L | 0.003 µg/L | 2025-01-30 | St. Charles Street Well / SP0001 |
| PFMPA | < 0.004 µg/L | 0.004 µg/L | 2025-01-30 | St. Charles Street Well / SP0001 |
| PFNA | < 0.004 µg/L | 0.004 µg/L | 2025-01-30 | Easterbrook Street Well / SP0003 |
| PFOA | < 0.004 µg/L | 0.004 µg/L | 2025-01-30 | St. Charles Street Well / SP0001 |
| PFOS | < 0.004 µg/L | 0.004 µg/L | 2025-01-30 | Easterbrook Street Well / SP0003 |
| PFPeA | < 0.003 µg/L | 0.003 µg/L | 2025-01-30 | Easterbrook Street Well / SP0003 |
| PFPeS | < 0.004 µg/L | 0.004 µg/L | 2025-01-30 | Easterbrook Street Well / SP0003 |
| PFTA | < 0.008 µg/L | 0.008 µg/L | 2025-01-15 | St. Charles Street Well / SP0001 |
| PFTrDA | < 0.007 µg/L | 0.007 µg/L | 2025-01-15 | St. Charles Street Well / SP0001 |
| PFUnA | < 0.002 µg/L | 0.002 µg/L | 2025-01-30 | Easterbrook Street Well / SP0003 |
| lithium | 12.0 µg/L | 9 µg/L | 2025-01-15 | St. Charles Street Well / SP0001 |
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
| Substance | Published 90th percentile | Monitoring period | Source quarter |
|---|---|---|---|
| Lead (PB90) | 0.009 mg/L | 2022-01-01 – 2024-12-31 | 2026Q3 |
| Lead (PB90) | 0.0015 mg/L | 2019-01-01 – 2021-12-31 | 2026Q3 |
| Lead (PB90) | 0.0043 mg/L | 2016-01-01 – 2018-12-31 | 2026Q3 |
| Lead (PB90) | 0.0016 mg/L | 2014-01-01 – 2016-12-31 | 2026Q3 |
| Lead (PB90) | 0.0018 mg/L | 2011-01-01 – 2013-12-31 | 2026Q3 |
| Lead (PB90) | 0.0015 mg/L | 2008-01-01 – 2010-12-31 | 2026Q3 |
| Lead (PB90) | 0.0031 mg/L | 2005-01-01 – 2007-12-31 | 2026Q3 |
| Lead (PB90) | 0.003 mg/L | 2002-01-01 – 2004-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| NITRATE-NITRITE | < .05 mg/L | 2026-09-14 | TF101 / Mississippi selected chemical sample panels |
| NITRATE | < .05 mg/L | 2026-09-14 | TF101 / Mississippi selected chemical sample panels |
| NITRITE | < .05 mg/L | 2026-09-14 | TF101 / Mississippi selected chemical sample panels |
| 1,2,4-TRICHLOROBENZENE | < .5 µg/L | 2026-09-14 | TF101 / Mississippi selected chemical sample panels |
| CIS-1,2-DICHLOROETHYLENE | < .5 µg/L | 2026-09-14 | TF101 / Mississippi selected chemical sample panels |
| XYLENES, TOTAL | < 1 µg/L | 2026-09-14 | TF101 / Mississippi selected chemical sample panels |
| DICHLOROMETHANE | < 1 µg/L | 2026-09-14 | TF101 / Mississippi selected chemical sample panels |
| O-DICHLOROBENZENE | < .5 µg/L | 2026-09-14 | TF101 / Mississippi selected chemical sample panels |
| P-DICHLOROBENZENE | < .5 µg/L | 2026-09-14 | TF101 / Mississippi selected chemical sample panels |
| VINYL CHLORIDE | < .5 µg/L | 2026-09-14 | TF101 / Mississippi selected chemical sample panels |
| 1,1-DICHLOROETHYLENE | < .5 µg/L | 2026-09-14 | TF101 / Mississippi selected chemical sample panels |
| TRANS-1,2-DICHLOROETHYLENE | < .5 µg/L | 2026-09-14 | TF101 / Mississippi selected chemical sample panels |
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
14 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.
| Rule / record | Period | Recorded status | Health-based (EPA classification) | Source quarter |
|---|---|---|---|---|
| Public Notice Rule and Revised PN Rule / Public Notification Violation for NPDWR Violation | 2024-12-07 – — | Resolved | No | 2026Q3 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Maximum Contaminant Level Violation, Average | 2024-10-01 – 2024-12-31 | Resolved | Yes | 2026Q3 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Maximum Contaminant Level Violation, Average | 2024-07-01 – 2024-09-30 | Resolved | Yes | 2026Q3 |
| Public Notice Rule and Revised PN Rule / Public Notification Violation for NPDWR Violation | 2024-05-27 – — | Resolved | No | 2026Q3 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Maximum Contaminant Level Violation, Average | 2024-04-01 – 2024-06-30 | Resolved | Yes | 2026Q3 |
| Consumer Confidence Rule / Consumer Confidence Report Inadequate Reporting | 2023-07-01 – — | Resolved | No | 2026Q3 |
| Public Notice Rule and Revised PN Rule / Public Notification Violation for NPDWR Violation | 2023-06-04 – — | Resolved | No | 2026Q3 |
| Public Notice Rule and Revised PN Rule / Public Notification Violation for NPDWR Violation | 2023-03-10 – — | Resolved | No | 2026Q3 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Maximum Contaminant Level Violation, Average | 2023-01-01 – 2023-03-31 | Resolved | Yes | 2026Q3 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Maximum Contaminant Level Violation, Average | 2022-10-01 – 2022-12-31 | Resolved | Yes | 2026Q3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2018-10-01 – 2018-12-31 | Resolved | No | 2026Q3 |
| Total Coliform Rule / Maximum Contaminant Level Violation, Monthly (TCR) | 1993-11-01 – 1993-11-30 | Archived | Yes | 2026Q3 |
| Total Coliform Rule / Maximum Contaminant Level Violation, Monthly (TCR) | 1993-02-01 – 1993-02-28 | Archived | Yes | 2026Q3 |
| Total Coliform Rule / Maximum Contaminant Level Violation, Monthly (TCR) | 1992-03-01 – 1992-03-31 | Archived | Yes | 2026Q3 |
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
- Mississippi selected chemical sample panels — last successful check: 2026-10-17
Administrative contact (EPA filing)
Favre, Mike: 228-467-5505
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.