Public water system record
Caguas Sur
On record as serving Caguas, Caguas Municipio, PR · Serves 33,231 people
Federal records show 2 health-based violations and 23 monitoring/reporting issues for Caguas Sur 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
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 23
Key facts
- Caguas Sur 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, October 2016.
- Record on file since 1980, with 67 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 5,929 unknown out of 14,720 service lines.
Check whether Caguas Sur 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 |
|
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 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Monitoring and reporting
|
Sep 1, 2025 |
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, 2025 | Resolved |
|
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.
|
|
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 Caguas Sur go back to 1980. Before October 19, 2016 they list 67 health-based violations (16 resolved, 51 archived by EPA without a recorded fix) and 71 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 18 |
| 1990s | 40 | 6 |
| 2000s | 13 | 30 |
| 2010 to October 18, 2016 | 14 | 17 |
| October 19, 2016 to 2019 | 0 | 14 |
| 2020s | 1 | 3 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began October 2016, Resolved.
Show all 67 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 0.093 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
Jul 1, 2016 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.068 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
Apr 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.093 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
Apr 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)
|
Jan 1, 2016 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.061 mg/L, federal limit 0.06 mg/L (at or just above the limit)
|
Jan 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Oct 1, 2015 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2011 | Archived |
|
CARBON, TOTAL
Treatment technique failure
|
Jan 1, 2011 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Oct 1, 2010 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Sep 1, 2010 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jul 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2009 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.065 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
Jan 1, 2007 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Nov 1, 2004 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 2001 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 2000 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 2000 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 2000 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 2000 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 2000 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2000 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 2000 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 2000 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 2000 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1997 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 1996 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 1996 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 1996 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1995 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1995 | Archived |
17 older violations are not listed here. EPA ECHO has the complete list.
Enforcement actions
Puerto Rico regulators and EPA took 8 formal enforcement actions against Caguas Sur between 1994 and 2016. The most recent was a civil case filed in court in October 2016.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 26, 2016 | Puerto Rico | Civil case filed in court | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Apr 14, 2016 | Puerto Rico | Civil case filed in court | 1 violation (1 health-based): Haloacetic Acids (HAA5) |
| Apr 10, 2016 | Puerto Rico | Civil case filed in court | 1 violation (1 health-based): Haloacetic Acids (HAA5) |
| Feb 9, 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 |
| Jul 2, 1997 | EPA | Compliance order (no penalty) | 2 violations (2 health-based): Surface Water Treatment Rule, Lead and Copper Rule |
| Feb 5, 1996 | Puerto Rico | Compliance order (no penalty) | 2 violations (2 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
Total Trihalomethanes (TTHMs)
1 incidentDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Where the water comes from
Caguas Sur draws water from 2 surface water intakes.
Annual water quality report
Caguas Sur 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 Puerto Rico.
Certified drinking water labs by state EPA guidance for private wells