Missouri · population 3,189
Lead pipes in Byrnes Mill, MO
451 lines still unidentified
Most of Byrnes Mill (population 3,189) gets its water from Jefferson County PWSD 6. It reported no confirmed lead service lines, but 451 of 3,232 lines are still listed as unknown material, so lead hasn't been ruled out.
0% of Jefferson County PWSD 6's service lines are lead or galvanized requiring replacement, lower than the Missouri average (3.3%) and lower than the national average (3.1%).
- Lead 0%
- Galvanized (replace) 0%
- Unknown 14%
- Non-lead 86%
Latest lead test for Jefferson County PWSD 6 (Jan 2023–Dec 2025): 2.9 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 Jefferson County PWSD 6.
Water systems serving Byrnes Mill
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Jefferson County PWSD 6Main system | 0 | 0 | 451 | 0% |
| Liberty Utilities Warren Woods SubdServes nearby areas | 0 | 0 | 21 | 0% |
| Jefferson County PWSD 2Serves nearby areas | 0 | 3 | 197 | <0.1% |
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 Byrnes Mill
The counts above cover the whole water system. To see whether your line is lead, look up your address on Jefferson County PWSD 6'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
- Eureka10,669 lead + galv. lines
- Valley Park10,669 lead + galv. lines
- Fenton10,669 lead + galv. lines
- Pacific47 unknown
- Ellisville10,669 lead + galv. lines
- Manchester10,669 lead + galv. lines
- Winchester10,669 lead + galv. lines
- Wildwood10,669 lead + galv. lines
Check another water system
Questions
Does Byrnes Mill, MO have lead pipes?
None are confirmed, but Jefferson County PWSD 6 still lists 451 service lines as unknown material.
Who supplies water to Byrnes Mill?
EPA's service area maps place most of Byrnes Mill in Jefferson County PWSD 6's service area (PWSID MO6024298). Liberty Utilities Warren Woods Subd, Jefferson County PWSD 2 also serve parts of the city or nearby areas.
How do I check whether my Byrnes Mill home has a lead service line?
Search your address on Jefferson County PWSD 6'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 Byrnes Mill 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 Jefferson County PWSD 6 whether your street is scheduled and whether it covers the private side.