Missouri · population 5,321
Lead pipes in Herculaneum, MO
18 lead or galvanized lines to replace
Most of Herculaneum (population 5,321) gets its water from Herculaneum PWS. That system reported 0 lead and 18 galvanized-requiring-replacement service lines out of 1,937, with 535 more of unknown material.
0.9% of Herculaneum PWS'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) 0.9%
- Unknown 28%
- Non-lead 71%
Latest lead test for Herculaneum PWS (Jan 2024–Dec 2026): not detected 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 Herculaneum PWS.
Water systems serving Herculaneum
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Herculaneum PWSMain system | 0 | 18 | 535 | 0.9% |
| Jefferson County PWSD 7Serves nearby areas | 0 | 0 | 2,894 | 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 Herculaneum
The counts above cover the whole water system. To see whether your line is lead, look up your address on Herculaneum PWS'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
- Pevelyno lead reported
- Crystal7 lead + galv. lines
- Festus2 lead + galv. lines
- Arnoldno lead reported
- De Sotono lead reported
- Byrnes Mill451 unknown
- Green Park10,669 lead + galv. lines
- Sunset Hills10,669 lead + galv. lines
Check another water system
Questions
Does Herculaneum, MO have lead pipes?
Yes. Herculaneum PWS, which serves Herculaneum, reported 0 lead and 18 galvanized-requiring-replacement service lines, plus 535 of unknown material.
Who supplies water to Herculaneum?
EPA's service area maps place most of Herculaneum in Herculaneum PWS's service area (PWSID MO6010359). Jefferson County PWSD 7 also serves parts of the city or nearby areas.
How do I check whether my Herculaneum home has a lead service line?
Search your address on Herculaneum PWS'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 Herculaneum 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 Herculaneum PWS whether your street is scheduled and whether it covers the private side.