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Public water system record

Maricao

Serves an area of Maricao Municipio, PR that includes Maricao · 3,474 people served

Federal records show 1 health-based violation and 9 monitoring/reporting issues for Maricao in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • PR0003353
  • MARICAO
  • PR
  • 3,474 served

System profile

Source water Surface water
ZIP 00606
EPA system ID PR0003353

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
9

Key facts

  • Maricao draws water from 2 surface water intakes.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit), 2016.
  • Most recent formal enforcement: civil case filed in court by Puerto Rico, August 2016.
  • Record on file since 1980, with 19 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 509 unknown out of 1,615 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
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Oct 1, 2016 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, 2020 Resolved
Consumer Confidence Rule
OTHER
 Oct 1, 2018 Resolved
Surface Water Treatment Rule
Monitoring and reporting
 May 1, 2018 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Surface Water Treatment Rule
Monitoring and reporting
 Apr 1, 2018 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
E. coli
Monitoring and reporting
 Jan 1, 2018 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Jan 1, 2018 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jan 1, 2018 Resolved
Lead and Copper Rule
Monitoring and reporting
 Jan 1, 2016 Resolved
Lead and Copper Rule
Monitoring and reporting
 Jul 1, 2012 Resolved

Full record since 1980

EPA's records for Maricao go back to 1980. Before October 19, 2016 they list 19 health-based violations (7 resolved, 12 archived by EPA without a recorded fix) and 49 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 0 18
1990s 2 1
2000s 13 24
2010 to October 18, 2016 4 6
October 19, 2016 to 2019 0 6
2020s 0 1

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began October 2016, Resolved.

Show all 19 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Oct 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.092 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Jul 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.089 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Apr 1, 2016 Resolved
Total Coliform
Contaminant limit exceeded
 Dec 1, 2013 Resolved
Total Coliform
Contaminant limit exceeded
 Oct 1, 2008 Resolved
Total Coliform (acute)
Contaminant limit exceeded
 Oct 1, 2008 Resolved
CARBON, TOTAL
Treatment technique failure
 Oct 1, 2005 Resolved
CARBON, TOTAL
Treatment technique failure
 Jul 1, 2005 Archived
CARBON, TOTAL
Treatment technique failure
 Apr 1, 2005 Archived
CARBON, TOTAL
Treatment technique failure
 Jan 1, 2005 Archived
Surface Water Treatment Rule
Treatment technique failure
 Dec 1, 2004 Archived
Surface Water Treatment Rule
Treatment technique failure
 Nov 1, 2004 Archived
Surface Water Treatment Rule
Treatment technique failure
 Oct 1, 2004 Archived
Surface Water Treatment Rule
Treatment technique failure
 Jul 1, 2004 Archived
Surface Water Treatment Rule
Treatment technique failure
 Dec 1, 2003 Archived
Surface Water Treatment Rule
Treatment technique failure
 Nov 1, 2003 Archived
Surface Water Treatment Rule
Treatment technique failure
 Sep 1, 2003 Archived
Total Coliform
Contaminant limit exceeded
 Sep 1, 1996 Archived
Surface Water Treatment Rule
Treatment technique failure
 Aug 1, 1994 Archived

Enforcement actions

Puerto Rico regulators took 2 formal enforcement actions against Maricao between 2008 and 2016. The most recent was a civil case filed in court in August 2016.

Date By Action Violations covered
Aug 15, 2016 Puerto Rico Civil case filed in court 3 violations (3 health-based): Total Trihalomethanes (TTHMs)
Jun 24, 2008 Puerto Rico Civil case filed in court 1 violation (1 health-based): Total Coliform

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

Maricao draws water from 2 surface water intakes.

Annual water quality report

Maricao 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 Puerto Rico.

Certified drinking water labs by state EPA guidance for private wells