Public water system record
Las Marias
Serves an area of Las Marías Municipio and Añasco Municipio, PR that includes Las Marías · 7,166 people served
Federal records show 1 health-based violation and 31 monitoring/reporting issues for Las Marias in the last ten years. The most serious issue in this window was a resolved Interim Enhanced Surface Water Treatment Rule violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 31
Key facts
- Las Marias draws water from 1 surface water intake.
- Most recent formal enforcement: civil case filed in court by Puerto Rico, October 2014.
- Record on file since 1980, with 23 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 1,137 unknown out of 3,257 service lines.
Check whether Las Marias 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | May 1, 2023 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed 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 |
|
E. coli
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Cryptosporidium
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Turbidity
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
E. coli
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Cryptosporidium
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Turbidity
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
E. coli
Monitoring and reporting
|
Aug 1, 2017 | Resolved |
|
Cryptosporidium
Monitoring and reporting
|
Aug 1, 2017 | Resolved |
|
Turbidity
Monitoring and reporting
|
Aug 1, 2017 | Resolved |
|
E. coli
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Cryptosporidium
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Turbidity
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
E. coli
Monitoring and reporting
|
May 1, 2017 | Resolved |
|
Cryptosporidium
Monitoring and reporting
|
May 1, 2017 | Resolved |
|
Turbidity
Monitoring and reporting
|
May 1, 2017 | Resolved |
|
E. coli
Monitoring and reporting
|
Feb 1, 2017 | Resolved |
|
Cryptosporidium
Monitoring and reporting
|
Feb 1, 2017 | Resolved |
|
Turbidity
Monitoring and reporting
|
Feb 1, 2017 | Resolved |
|
E. coli
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Cryptosporidium
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Turbidity
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
E. coli
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Cryptosporidium
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Turbidity
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2011 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2009 | Resolved |
Full record since 1980
EPA's records for Las Marias go back to 1980. Before October 19, 2016 they list 23 health-based violations (9 resolved, 14 archived by EPA without a recorded fix) and 63 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 18 |
| 1990s | 7 | 3 |
| 2000s | 8 | 28 |
| 2010 to October 18, 2016 | 8 | 14 |
| October 19, 2016 to 2019 | 0 | 26 |
| 2020s | 1 | 1 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began July 2016, Resolved.
Show all 23 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jul 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Apr 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Jan 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Oct 1, 2014 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Jul 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 2013 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2013 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Apr 1, 2013 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2007 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Jul 1, 2004 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2002 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 2001 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 2001 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 2001 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 2000 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 2000 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 1994 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 1994 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1994 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1994 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1993 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1993 | Archived |
Enforcement actions
Puerto Rico regulators took 3 formal enforcement actions against Las Marias between 1994 and 2014. The most recent was a civil case filed in court in October 2014.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 27, 2014 | Puerto Rico | Civil case filed in court | 4 violations (4 health-based): Total Trihalomethanes (TTHMs) |
| Jun 24, 2008 | Puerto Rico | Civil case filed in court | 1 violation (1 health-based): Total Coliform |
| Mar 4, 1994 | Puerto Rico | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
What the violations mean
Interim Enhanced Surface Water Treatment Rule
1 incidentThe system did not meet a filtration or treatment requirement for surface water
Inadequate treatment of surface water can let pathogens such as Cryptosporidium and Giardia through
Where the water comes from
Las Marias draws water from 1 surface water intake.
Annual water quality report
Las Marias 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