Public water system record
St Charles PWS
Serves St. Charles, St. Charles County, MO · 73,040 people served
Federal records show no health-based violations and 1 monitoring/reporting issue for St Charles PWS in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 1
Key facts
- St Charles PWS draws water from 7 wells (4 of them for emergency, seasonal or other part-time use).
- Record on file since 2003, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 7 lead and 365 unknown out of 28,600 service lines.
Check whether St Charles PWS serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
Full record since 2003
EPA's records for St Charles PWS go back to 2003. Before October 19, 2016 they list no health-based violations and 3 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 0 | 2 |
| 2010 to October 18, 2016 | 0 | 1 |
| 2020s | 0 | 1 |
Where the water comes from
St Charles PWS draws water from 7 wells (4 of them for emergency, seasonal or other part-time use). It also buys water from St Louis City PWS.
Buys water from
- St Louis City PWS St Louis, MO
Annual water quality report
St Charles PWS must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Missouri.
Certified drinking water labs by state EPA guidance for private wells