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Public water system record

Moon Twp Muni Auth

Serves an area of Allegheny County, PA that includes Carnot-Moon · 38,000 people served

Federal records show 1 health-based violation and 3 monitoring/reporting issues for Moon Twp Muni Auth in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • PA5020011
  • MOON TOWNSHIP
  • PA
  • 38,000 served

System profile

Source water Surface water
ZIP 15108
EPA system ID PA5020011

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
3

Key facts

  • Moon Twp Muni Auth draws water from 3 wells and 1 surface water intake.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit), 2025.
  • Most recent formal enforcement: consent decree or court judgment by Pennsylvania, September 2005.
  • Record on file since 1988, with 0 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 8,669 service lines.

Check whether Moon Twp Muni Auth serves your address

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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
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Apr 1, 2025 Resolved No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Public Notice
OTHER
 Aug 10, 2025 Resolved
Revised Total Coliform Rule
Monitoring violation
 Jun 1, 2025 Resolved
CARBON, TOTAL
Monitoring and reporting
 Jan 1, 2024 Resolved

Full record since 1988

EPA's records for Moon Twp Muni Auth go back to 1988. Before October 19, 2016 they list no health-based violations and 54 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 0 14
1990s 0 28
2000s 0 10
2010 to October 18, 2016 0 2
2020s 1 3

Enforcement actions

Pennsylvania regulators took 4 formal enforcement actions against Moon Twp Muni Auth between 2004 and 2005. The most recent was a consent decree or court judgment in September 2005.

Date By Action Violations covered
Sep 9, 2005 Pennsylvania Consent decree or court judgment 4 violations: Combined Uranium, Radium-226, Radium-228, Gross Alpha, Excl. Radon and U
Oct 15, 2004 Pennsylvania Consent decree or court judgment 1 violation: Consumer Confidence Rule
Mar 2, 2004 Pennsylvania Consent decree or court judgment 3 violations: CARBON, TOTAL, Chlorine
Feb 26, 2004 Pennsylvania Consent decree or court judgment 1 violation: Total Trihalomethanes (TTHMs)

What the violations mean

Total Trihalomethanes (TTHMs)

1 incident

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Where the water comes from

Moon Twp Muni Auth draws water from 3 wells and 1 surface water intake. It also buys water from Western Allegheny County Mun A, Creswell Heights JT Auth, Coraopolis Water & Sewer Auth and Robinson Twp Muni Auth. 2 other community water systems and 3 smaller public systems such as schools, businesses or campgrounds buy water from Moon Twp Muni Auth. 2 other public water systems have emergency connections to Moon Twp Muni Auth.

Buys water from

Community systems that buy water from it

Annual water quality report

Moon Twp Muni Auth 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 Pennsylvania.

Certified drinking water labs by state EPA guidance for private wells