AIBONITO, PR · Aibonito Municipio County
CUYON Water System
Consumer Confidence Report status
CUYON must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for CUYON.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Puerto Rico’s official records. Always confirm current status with Puerto Rico before making decisions based on this information.
System facts
- System ID (PWSID)
- PR0004555
- System type
- Community Water System
- Population served
- 521
- Service connections
- 195
- Ownership
- local government
- Water source
- groundwater (wells)
CUYON is one of 231 community water systems in Puerto Rico in the 501 to 3,300 people size category, serving 521 people from groundwater.
As of August 1, 2026, its federal record holds 54 entries between 1983 and 2022, all of which EPA lists as closed. Nothing has been added since 2022.
Of the 54, 50 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves synthetic organic chemicals, inorganic chemicals, and the Consumer Confidence Rule.
Violation history
Monitoring, Regular
—Chlordane
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Toxaphene
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Dalapon
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Diquat
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Endothall
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Glyphosate
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) adipate
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—OXAMYL
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Simazine
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) phthalate
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Picloram
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Dinoseb
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Hexachlorocyclopentadiene
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Carbofuran
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Atrazine
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—LASSO
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Heptachlor
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Heptachlor epoxide
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—2,4-D
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—2,4,5-TP
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—HEXACHLOROBENZENE
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Benzo(a)pyrene
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Pentachlorophenol
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Total Polychlorinated Biphenyls (PCB)
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—1,2-DIBROMO-3-CHLOROPROPANE
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—ETHYLENE DIBROMIDE
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Endrin
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—BHC-GAMMA
October 1, 2022 – December 31, 2022
ResolvedMonitoring, Regular
—Methoxychlor
October 1, 2022 – December 31, 2022
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2022 – July 4, 2022
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2020 – August 10, 2020
ResolvedConsumer Confidence Report Inadequate Reporting
—Consumer Confidence Rule
October 1, 2018 – August 13, 2019
ResolvedLead Consumer Notice
—Lead and Copper Rule
January 1, 2016 – December 31, 2018
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
October 1, 2015 – October 31, 2015
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2014 – September 25, 2014
ResolvedLead Consumer Notice
—Lead and Copper Rule
July 1, 2012 – December 31, 2018
ResolvedMonitoring, Regular
—Total Polychlorinated Biphenyls (PCB)
January 1, 2010 – March 31, 2010
ResolvedMonitoring, Regular
—Chlordane
January 1, 2010 – March 31, 2010
ResolvedMonitoring, Regular
—Endrin
January 1, 2010 – March 31, 2010
ResolvedMonitoring, Regular
—BHC-GAMMA
January 1, 2010 – March 31, 2010
ResolvedMonitoring, Regular
—Methoxychlor
January 1, 2010 – March 31, 2010
ResolvedMonitoring, Regular
—Toxaphene
January 1, 2010 – March 31, 2010
ResolvedMonitoring, Regular
—Heptachlor epoxide
January 1, 2010 – March 31, 2010
ResolvedMonitoring, Regular
—HEXACHLOROBENZENE
January 1, 2010 – March 31, 2010
ResolvedMonitoring, Regular
—Barium
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—1,2-DIBROMO-3-CHLOROPROPANE
July 1, 1998 – September 30, 1998
ArchivedMonitoring, Regular
—ETHYLENE DIBROMIDE
July 1, 1998 – September 30, 1998
ArchivedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
August 1, 1994 – August 31, 1994
ArchivedMonitoring, Regular
—Barium
September 30, 1983 – September 29, 1984
ArchivedMonitoring, Regular
—Chromium
September 30, 1983 – September 29, 1984
ArchivedMonitoring, Regular
—Fluoride
September 30, 1983 – September 29, 1984
ArchivedMonitoring, Regular
—Mercury
September 30, 1983 – September 29, 1984
ArchivedMonitoring, Regular
—Selenium
September 30, 1983 – September 29, 1984
ArchivedMonitoring, Regular
—Cadmium
September 30, 1983 – September 29, 1984
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Chlordane | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Toxaphene | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Dalapon | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Diquat | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Endothall | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Glyphosate | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Di(2-ethylhexyl) adipate | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | OXAMYL | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Simazine | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Di(2-ethylhexyl) phthalate | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Picloram | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Dinoseb | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Hexachlorocyclopentadiene | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Carbofuran | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Atrazine | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | LASSO | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Heptachlor | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Heptachlor epoxide | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | 2,4-D | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | 2,4,5-TP | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | HEXACHLOROBENZENE | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Benzo(a)pyrene | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Pentachlorophenol | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Total Polychlorinated Biphenyls (PCB) | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | 1,2-DIBROMO-3-CHLOROPROPANE | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | ETHYLENE DIBROMIDE | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Endrin | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | BHC-GAMMA | — | Resolved |
| October 1, 2022 – December 31, 2022 | Monitoring, Regular | Methoxychlor | — | Resolved |
| July 1, 2022 – July 4, 2022 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| July 1, 2020 – August 10, 2020 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| October 1, 2018 – August 13, 2019 | Consumer Confidence Report Inadequate Reporting | Consumer Confidence Rule | — | Resolved |
| January 1, 2016 – December 31, 2018 | Lead Consumer Notice | Lead and Copper Rule | — | Resolved |
| October 1, 2015 – October 31, 2015 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| July 1, 2014 – September 25, 2014 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| July 1, 2012 – December 31, 2018 | Lead Consumer Notice | Lead and Copper Rule | — | Resolved |
| January 1, 2010 – March 31, 2010 | Monitoring, Regular | Total Polychlorinated Biphenyls (PCB) | — | Resolved |
| January 1, 2010 – March 31, 2010 | Monitoring, Regular | Chlordane | — | Resolved |
| January 1, 2010 – March 31, 2010 | Monitoring, Regular | Endrin | — | Resolved |
| January 1, 2010 – March 31, 2010 | Monitoring, Regular | BHC-GAMMA | — | Resolved |
| January 1, 2010 – March 31, 2010 | Monitoring, Regular | Methoxychlor | — | Resolved |
| January 1, 2010 – March 31, 2010 | Monitoring, Regular | Toxaphene | — | Resolved |
| January 1, 2010 – March 31, 2010 | Monitoring, Regular | Heptachlor epoxide | — | Resolved |
| January 1, 2010 – March 31, 2010 | Monitoring, Regular | HEXACHLOROBENZENE | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Barium | — | Resolved |
| July 1, 1998 – September 30, 1998 | Monitoring, Regular | 1,2-DIBROMO-3-CHLOROPROPANE | — | Archived |
| July 1, 1998 – September 30, 1998 | Monitoring, Regular | ETHYLENE DIBROMIDE | — | Archived |
| August 1, 1994 – August 31, 1994 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Archived |
| September 30, 1983 – September 29, 1984 | Monitoring, Regular | Barium | — | Archived |
| September 30, 1983 – September 29, 1984 | Monitoring, Regular | Chromium | — | Archived |
| September 30, 1983 – September 29, 1984 | Monitoring, Regular | Fluoride | — | Archived |
| September 30, 1983 – September 29, 1984 | Monitoring, Regular | Mercury | — | Archived |
| September 30, 1983 – September 29, 1984 | Monitoring, Regular | Selenium | — | Archived |
| September 30, 1983 – September 29, 1984 | Monitoring, Regular | Cadmium | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- March 31, 2023State Compliance achieved29 linked violations
- February 3, 2023State Formal Notice of Violation issued29 linked violations
- July 4, 2022State Compliance achieved1 linked violation
- August 10, 2020State Compliance achieved2 linked violations
- August 13, 2019State Compliance achieved1 linked violation
- July 10, 2019State Formal Notice of Violation issued1 linked violation
- December 31, 2018State Compliance achieved2 linked violations
- December 31, 2018State Compliance achieved2 linked violations
- February 19, 2016State Formal Notice of Violation issued1 linked violation
- December 3, 2015State Other1 linked violation
- December 31, 2010State Compliance achieved1 linked violation
- September 30, 2010State Compliance achieved9 linked violations
- May 3, 2010State Formal Notice of Violation issued16 linked violations
- June 1, 2003State Compliance achieved1 linked violation
- April 26, 2001State Violation/Reminder Notice1 linked violation
- November 6, 1998State Formal Notice of Violation issued2 linked violations
- October 28, 1994State Public Notification received1 linked violation
- October 30, 1992State Public Notification received1 linked violation
- February 28, 1991State Violation/Reminder Notice1 linked violation
- October 19, 1990State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
- July 22, 1990State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
Common questions
Is CUYON required to publish a Consumer Confidence Report?
- Yes. CUYON is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is CUYON’s next Consumer Confidence Report due?
- CUYON’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CUYON have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for CUYON.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
CUYON
787-620-2277
AIBONITO, PR 00653