Public water system record
Herculaneum PWS
Serves Herculaneum and Crystal City, Jefferson County, MO · 4,227 people served
Federal records show no health-based violations and no monitoring or reporting issues for Herculaneum PWS in the last ten years.
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 0
Key facts
- Herculaneum PWS buys its water from Jefferson County Water Authority.
- Record on file since 1998, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 535 unknown out of 1,937 service lines.
Check whether Herculaneum 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, and no monitoring or reporting violations either.
Full record since 1998
EPA's records for Herculaneum PWS go back to 1998. Before October 19, 2016 they list 1 health-based violation (1 archived by EPA without a recorded fix) and 4 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 0 |
| 2000s | 0 | 4 |
Most recent health-based violation before October 19, 2016: Total Coliform, began December 1998, Archived.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1998 | Archived |
Where the water comes from
Herculaneum PWS buys its water from Jefferson County Water Authority. EPA also lists 2 wells, all for emergency, seasonal or other part-time use. It also has emergency connections to Festus PWS, Crystal City PWS and Pevely PWS. 1 other public water system has an emergency connection to Herculaneum PWS.
Buys water from
- Jefferson County Water Authority Festus, MO
Emergency or part-time connections to
- Festus PWS Festus, MO
- Crystal City PWS Crystal City, MO
- Pevely PWS Pevely, MO
Annual water quality report
Herculaneum 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.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
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