Missouri · population 61,398
Lead pipes in St. Peters, MO
2,860 lines still unidentified
Most of St. Peters (population 61,398) gets its water from St Peters PWS. It reported no confirmed lead service lines, but 2,860 of 19,062 lines are still listed as unknown material, so lead hasn't been ruled out.
0% of St Peters 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%
- Unknown 15%
- Non-lead 85%
Latest lead test for St Peters PWS (Jan 2022–Dec 2024): 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 St Peters PWS.
Water systems serving St. Peters
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| St Peters PWSMain system | 0 | 0 | 2,860 | 0% |
| Mo American St Louis St Charles CountiesServes nearby areas | 9,422 | 1,247 | 191,341 | 2.7% |
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 St. Peters
The counts above cover the whole water system. To see whether your line is lead, look up your address on St Peters 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
- Cottleville10,669 lead + galv. lines
- St. Charles7 lead + galv. lines
- Weldon Spring10,669 lead + galv. lines
- O'Fallon4,452 unknown
- Dardenne Prairie4,452 unknown
- Maryland Heights10,669 lead + galv. lines
- Chesterfield10,669 lead + galv. lines
- St. Paulno lead reported
Check another water system
Questions
Does St. Peters, MO have lead pipes?
None are confirmed, but St Peters PWS still lists 2,860 service lines as unknown material.
Who supplies water to St. Peters?
EPA's service area maps place most of St. Peters in St Peters PWS's service area (PWSID MO6010719). Mo American St Louis St Charles Counties also serves parts of the city or nearby areas.
How do I check whether my St. Peters home has a lead service line?
Search your address on St Peters 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 St. Peters 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 St Peters PWS whether your street is scheduled and whether it covers the private side.