Public water system record
Yauco
Serves an area of Yauco Municipio, PR that includes Yauco and Palomas · 35,618 people served
Federal records show 5 health-based violations and 51 monitoring/reporting issues for Yauco in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.
System profile
- Health-based violations, last 10 years
- 5
- Resolved
- 5
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 51
Key facts
- Yauco draws water from 3 wells and 3 surface water intakes.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.095 mg/L, federal limit 0.08 mg/L (1.2 times the limit), 2020.
- Most recent formal enforcement: civil case filed in court by Puerto Rico, February 2020.
- Record on file since 1980, with 19 health-based violations before October 20, 2016.
- Lead pipe inventory: 0 lead and 6,777 unknown out of 16,761 service lines.
Check whether Yauco 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 |
|---|---|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Apr 1, 2020 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.095 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jan 1, 2020 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.093 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Oct 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.094 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jul 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Apr 1, 2019 | Resolved | No |
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 |
|
Public Notice
OTHER
|
Oct 10, 2019 | Resolved |
|
E. coli
Monitoring and reporting
|
Aug 1, 2019 | Resolved |
|
Cryptosporidium
Monitoring and reporting
|
Aug 1, 2019 | Resolved |
|
Turbidity
Monitoring and reporting
|
Aug 1, 2019 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Chlordane
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
LASSO
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Endrin
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jan 1, 2019 | 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 |
|
E. coli
Monitoring and reporting
|
Feb 1, 2018 | Resolved |
|
Cryptosporidium
Monitoring and reporting
|
Feb 1, 2018 | Resolved |
|
Turbidity
Monitoring and reporting
|
Feb 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
|
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
|
Jun 1, 2017 | Resolved |
|
Cryptosporidium
Monitoring and reporting
|
Jun 1, 2017 | Resolved |
|
Turbidity
Monitoring and reporting
|
Jun 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, 2016 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2012 | Resolved |
Full record since 1980
EPA's records for Yauco go back to 1980. Before October 20, 2016 they list 19 health-based violations (2 resolved, 17 archived by EPA without a recorded fix) and 85 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 18 |
| 1990s | 9 | 2 |
| 2000s | 7 | 16 |
| 2010 to October 19, 2016 | 3 | 49 |
| October 20, 2016 to 2019 | 3 | 45 |
| 2020s | 2 | 1 |
Most recent health-based violation before October 20, 2016: Total Coliform, began October 2011, Archived.
Show all 19 health-based violations before October 20, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2011 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2011 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2006 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Nov 1, 2004 | Archived |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Oct 1, 2004 | Archived |
|
CARBON, TOTAL
Treatment technique failure
|
Apr 1, 2004 | Archived |
|
CARBON, TOTAL
Treatment technique failure
|
Jan 1, 2004 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 2001 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2001 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1999 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1998 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1998 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1994 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1993 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1993 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1992 | Archived |
Enforcement actions
Puerto Rico regulators took 3 formal enforcement actions against Yauco between 2008 and 2020. The most recent was a civil case filed in court in February 2020.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Feb 10, 2020 | Puerto Rico | Civil case filed in court | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Jul 23, 2019 | Puerto Rico | Civil case filed in court | 2 violations (2 health-based): Total Trihalomethanes (TTHMs) |
| Jun 24, 2008 | Puerto Rico | Civil case filed in court | 2 violations (2 health-based): Total Coliform |
What the violations mean
Total Trihalomethanes (TTHMs)
5 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Where the water comes from
Yauco draws water from 3 wells and 3 surface water intakes.
Annual water quality report
Yauco 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