Mississippi · population 10,526
Lead pipes in Bay St. Louis, MS
No lead lines reported
Most of Bay St. Louis (population 10,526) gets its water from Hancock County Water & Sewer, which reported 1,673 service lines and no lead, galvanized or unknown lines.
0% of Hancock County Water & Sewer's service lines are lead or galvanized requiring replacement, lower than the Mississippi average (1.9%) and lower than the national average (3.1%).
- Lead 0%
- Galvanized (replace) 0%
- Unknown 0%
- Non-lead 100%
Latest lead test for Hancock County Water & Sewer (Jan 2023–Dec 2025): 6.3 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists no Lead and Copper Rule violations since 2015 for Hancock County Water & Sewer.
Water systems serving Bay St. Louis
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Hancock County Water & SewerMain system | 0 | 0 | 0 | 0% |
| City of Bay St LouisServes nearby areas | 0 | 0 | 2,171 | 0% |
Matched from EPA water system service area boundaries and the cities each system reports serving. Edges of the city may be served by a neighboring system; your water bill names your utility.
Check your address in Bay St. Louis
The counts above cover the whole water system. To see whether your line is lead, look up your address on Hancock County Water & Sewer's official inventory. Utilities had to make these public by October 16, 2024.
No map yet? Do the 2-minute scratch and magnet test.
Protect your drinking water
If your line is lead, galvanized or unknown, use a filter certified to NSF/ANSI 53 for lead for drinking, cooking and baby formula, and use only cold water.
Choosing a lead-certified filter · Testing your water · Replacement cost
Nearby cities
- Waveland2,171 unknown
- Diamondheadno lead reported
- Pass Christian220 lead + galv. lines
- Long Beach24 lead + galv. lines
- Biloxi752 lead + galv. lines
- D'Ibervilleno lead reported
- Ocean Springs3,198 unknown
- Poplarvilleno lead reported
Check another water system
Questions
Does Bay St. Louis, MS have lead pipes?
Hancock County Water & Sewer, which serves Bay St. Louis, reported no lead, galvanized or unknown service lines.
Who supplies water to Bay St. Louis?
EPA's service area maps place most of Bay St. Louis in Hancock County Water & Sewer's service area (PWSID MS0230065). City of Bay St Louis also serves parts of the city or nearby areas.
How do I check whether my Bay St. Louis home has a lead service line?
Search your address on Hancock County Water & Sewer's service line inventory map. You can also scratch the pipe where water enters your home: lead is soft, dull gray, scratches to shiny silver and doesn't attract a magnet.
When will lead pipes in Bay St. Louis be replaced?
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Hancock County Water & Sewer whether your street is scheduled and whether it covers the private side.