Public water system record

Leonards MHP

On record as serving Jefferson County, MO · Serves 48 people

Federal records show 1 health-based violation and 10 monitoring/reporting issues for Leonards MHP in the last ten years. The most serious issue in this window was a resolved Groundwater Rule violation.

  • MO6048100
  • ST. LOUIS
  • MO
  • 48 served

System profile

Source water Groundwater
ZIP 63103
EPA system ID MO6048100

Verify this system on EPA ECHO →

Health-based violations, last 10 years
1
Resolved
1
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
10

Key facts

  • Leonards MHP draws water from 1 well.
  • Most recent formal enforcement: consent decree or court judgment by Missouri, March 1996.
  • Record on file since 1996, with 1 health-based violation before October 20, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 16 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
Groundwater Rule
Treatment technique failure
140 Sep 25, 2014 Resolved No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Consumer Confidence Rule
OTHER
Jul 1, 2025 Active
LEAD AND COPPER RULE REVISIONS
RPT
Oct 17, 2024 Resolved
Consumer Confidence Rule
OTHER
Jul 1, 2023 Resolved
Consumer Confidence Rule
OTHER
Jul 1, 2022 Resolved
Consumer Confidence Rule
OTHER
Jul 1, 2021 Resolved
Revised Total Coliform Rule
Monitoring violation
Aug 1, 2020 Resolved
Revised Total Coliform Rule
Monitoring violation
Feb 1, 2019 Resolved
Consumer Confidence Rule
OTHER
Jul 1, 2016 Resolved
Public Notice
OTHER
Feb 10, 2015 Resolved
Lead and Copper Rule
Monitoring and reporting
Jan 1, 1996 Active
Enforcement action in place

Full record since 1996

EPA's records for Leonards MHP go back to 1996. Before October 20, 2016 they list 1 health-based violation (1 resolved) and 10 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 3
2000s 0 2
2010 to October 19, 2016 1 5
October 20, 2016 to 2019 0 1
2020s 0 6

Most recent health-based violation before October 20, 2016: Groundwater Rule, began September 2014, Resolved.

Show the health-based violation before October 20, 2016
Contaminant Start date Status
Groundwater Rule
Treatment technique failure
Sep 25, 2014 Resolved

Enforcement actions

Missouri regulators took 1 formal enforcement action against Leonards MHP in 1996. The most recent was a consent decree or court judgment in March 1996.

Date By Action Violations covered
Mar 17, 1996 Missouri Consent decree or court judgment 1 violation: Lead and Copper Rule

What the violations mean

Groundwater Rule

1 incident

The system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).

The utility had to notify customers about this violation.

Where the water comes from

Leonards MHP draws water from 1 well.

Annual water quality report

Leonards MHP 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 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Leonards MHP for a copy.

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.