Rio Grande Water Quality

Compiled by PlainEnviro · August 25, 2026

Puerto Rico

Health Violations

According to EPA SDWIS, Rio Grande, Puerto Rico is served by 3 community water systems covering about 69,370 people. The same extract lists 75 health-based violation records, most recently coded 0300 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.

Water Systems

69,370

Population Served

Health-Based Violation Records

Distinct Contaminant Codes

Drinking water in Rio Grande, Puerto Rico is delivered through 3 EPA-regulated community water systems serving an estimated 69,370 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.

PlainEnviro's health-based SDWIS extract shows 75 violation records across the 3 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 5 distinct EPA contaminant codes: Interim Enhanced Surface Water Treatment Rule, LEAD AND COPPER RULE REVISIONS, TTHM, Surface Water Treatment Rule, Lead and Copper Rule.

A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Puerto Rico drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.

Community Water Systems

System Name	Pop. Served	Source	Violations	Status
EL YUNQUE	68,114	Surface Water	46	Health
MOROVIS	996	Surface Water	26	Health
BARCELONA	260	Surface Water	3	Health

Does this city have health-based water violations?

These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.

Water system	Contaminant	Category	Begin Date	End Date	Enforcement
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2025-10-01	2025-10-31	8038080
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2025-05-01	2025-05-31	8038077
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2025-05-01	2025-05-31	-
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2025-05-01	2025-05-31	8038077
BARCELONA	LEAD AND COPPER RULE REVISIONS	TT	2024-10-17	Ongoing	10000007
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2024-06-01	2024-06-30	61
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2024-06-01	2024-06-30	61
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2023-01-01	2023-01-31	8038070
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2023-01-01	2023-01-31	8038070
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2023-01-01	2023-01-31	-
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2023-01-01	2023-01-31	8038070
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2023-01-01	2023-01-31	8038071
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2023-01-01	2023-01-31	8038071
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2023-01-01	2023-01-31	-
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2023-01-01	2023-01-31	8038071
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-10-01	2022-10-31	8038064
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-10-01	2022-10-31	8038064
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-10-01	2022-10-31	8038064
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-10-01	2022-10-31	8038065
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-10-01	2022-10-31	8038065
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-10-01	2022-10-31	8038065
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-09-01	2022-09-30	8038067
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-09-01	2022-09-30	8038067
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-09-01	2022-09-30	8038067
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-09-01	2022-09-30	8038069
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-09-01	2022-09-30	8038069
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-09-01	2022-09-30	8038069
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-08-01	2022-08-31	8038072
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-08-01	2022-08-31	8038072
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-08-01	2022-08-31	8038072
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-07-01	2022-07-31	8038073
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-07-01	2022-07-31	8038073
EL YUNQUE	Interim Enhanced Surface Water Treatment Rule	TT	2022-07-01	2022-07-31	8038073
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2022-07-01	2022-07-31	59
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2022-07-01	2022-07-31	59
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2022-07-01	2022-07-31	59
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2021-11-01	2021-11-30	54
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2021-11-01	2021-11-30	54
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2021-11-01	2021-11-30	52
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2021-11-01	2021-11-30	52
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2021-11-01	2021-11-30	52
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2021-11-01	2021-11-30	52
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2021-10-01	2021-10-31	-
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2021-10-01	2021-10-31	63
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2021-10-01	2021-10-31	64
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2021-10-01	2021-10-31	-
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2021-10-01	2021-10-31	53
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2021-10-01	2021-10-31	53
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2021-07-01	2021-07-31	49
MOROVIS	Interim Enhanced Surface Water Treatment Rule	TT	2021-07-01	2021-07-31	49

What are Rio Grande's health-based records for?

Rio Grande's health-based violation records carry 5 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.

Contaminant	Records	Systems	Most recent
Interim Enhanced Surface Water Treatment Rule	65	2	2025-10-01
Surface Water Treatment Rule	4	2	2019-01-01
Tthm	4	1	2019-10-01
Lead and Copper Rule	1	1	2012-11-09
Lead and Copper Rule Revisions	1	1	2024-10-17

Frequently Asked Questions

What does EPA SDWIS list for drinking water in Rio Grande, Puerto Rico? ▼

Rio Grande is listed with 3 EPA-regulated water systems covering approximately 69,370 people. 75 health-based violation records appear in the extract. A past registry row is not a current drinkability verdict; contact the local utility for current status.

How many water violations does Rio Grande have in this EPA extract? ▼

Rio Grande water systems have 75 health-based violation records in PlainEnviro's EPA SDWIS extract. This extract is filtered to EPA health-based records and does not include monitoring or reporting violations.

What contaminants were found in Rio Grande water? ▼

Health-based records for Rio Grande water systems carry the following EPA contaminant codes: Interim Enhanced Surface Water Treatment Rule, LEAD AND COPPER RULE REVISIONS, TTHM, Surface Water Treatment Rule, Lead and Copper Rule. This source edition does not include authoritative contaminant names. Source: EPA SDWIS.

How many water systems serve Rio Grande? ▼

3 EPA-regulated community water systems serve Rio Grande, Puerto Rico, collectively covering approximately 69,370 people. Data is from the EPA Safe Drinking Water Information System (SDWIS).

Where does Rio Grande get its drinking water? ▼

Rio Grande's water supply comes from 3 EPA-regulated community water systems. Source type data is not available for all systems. For detailed supply information, contact your local water utility. Source: EPA SDWIS.

How does Rio Grande compare in Puerto Rico?

Of the 69 Puerto Rico places with at least one community water system on file, Rio Grande ranks #44 by number of systems (3).

Either side of it: Mayaguez (3), Morovis (3), Carolina (2), Fajardo (2)

About This Data

Figures here are the current EPA SDWIS extract joined to the 3 community water systems whose service area lists Rio Grande, ranked against the 69 Puerto Rico places with at least one system on file. Data current as of 2026-08-25.

Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.

A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.

TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro