San Lorenzo Water Quality
Puerto Rico
According to EPA SDWIS, San Lorenzo, Puerto Rico is served by 17 community water systems covering about 33,056 people. The same extract lists 70 health-based violation records, most recently coded 5200 in 2024. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in San Lorenzo, Puerto Rico is delivered through 17 EPA-regulated community water systems serving an estimated 33,056 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 70 violation records across the 17 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 6 distinct EPA contaminant codes: LEAD AND COPPER RULE REVISIONS, TTHM, Total Haloacetic Acids (HAA5), Revised Total Coliform Rule, Coliform (TCR) and 1 others. 1 TRI-reporting industrial facility is also located within the city limits.
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 | Violations | Status |
|---|---|---|---|
| SAN LORENZO URBANO | 26,470 | 14 | Health |
| JAGUAL | 4,021 | 4 | Health |
| ACUED.COMUNAL SECT. MANUEL DIAZ | 331 | 5 | Health |
| ASOC. PRO ACUEDUCTO HATO CUCHILLA INC. | 256 | 6 | Health |
| ACUEDUCTO SECTOR PACHIN INC. | 243 | 1 | Health |
| MACANEA / ESPINO | 224 | 3 | Health |
| ASOC. VECINOS SECT. LOS OQUENDO | 214 | 1 | Health |
| SECTOR LOS DIAZ | 197 | 15 | Health |
| EL CERRO CORP. | 192 | 7 | Health |
| QUEMADOS I SEC. LOS ORTIZ INC. | 187 | 3 | Health |
| SISTEMA ACUEDUCTO CARRASCO INC. | 161 | 1 | Health |
| COMUNIDAD SECTOR LOS GOMEZ | 144 | 1 | Health |
| ACUED. COMUNIDAD 18 | 120 | 2 | Health |
| ACUED. COMUNAL JUAN FLORES | 120 | 1 | Health |
| COMUNIDAD EMMANUELLI INC | 80 | 1 | Health |
| CORPORACION SECTOR CANTERA | 53 | 3 | Health |
| COMUNIDAD EDEM | 43 | 2 | 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 | Begin Date |
|---|---|---|
| ACUED. COMUNAL JUAN FLORES | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| ACUEDUCTO SECTOR PACHIN INC. | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| COMUNIDAD EMMANUELLI INC | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| COMUNIDAD EDEM | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| ACUED. COMUNIDAD 18 | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| EL CERRO CORP. | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| COMUNIDAD SECTOR LOS GOMEZ | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| CORPORACION SECTOR CANTERA | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SISTEMA ACUEDUCTO CARRASCO INC. | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| ACUED.COMUNAL SECT. MANUEL DIAZ | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| ASOC. PRO ACUEDUCTO HATO CUCHILLA INC. | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| QUEMADOS I SEC. LOS ORTIZ INC. | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SECTOR LOS DIAZ | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| MACANEA / ESPINO | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| ASOC. VECINOS SECT. LOS OQUENDO | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SAN LORENZO URBANO | TTHM | 2021-10-01 |
| SAN LORENZO URBANO | TTHM | 2021-10-01 |
| JAGUAL | TTHM | 2018-10-01 |
| JAGUAL | TTHM | 2018-10-01 |
| JAGUAL | TTHM | 2018-04-01 |
| JAGUAL | TTHM | 2018-04-01 |
| SAN LORENZO URBANO | Total Haloacetic Acids (HAA5) | 2016-07-01 |
| SAN LORENZO URBANO | Total Haloacetic Acids (HAA5) | 2016-07-01 |
| CORPORACION SECTOR CANTERA | Revised Total Coliform Rule | 2016-04-01 |
| CORPORACION SECTOR CANTERA | Revised Total Coliform Rule | 2016-04-01 |
| SAN LORENZO URBANO | Total Haloacetic Acids (HAA5) | 2016-04-01 |
| SAN LORENZO URBANO | Total Haloacetic Acids (HAA5) | 2016-04-01 |
| SAN LORENZO URBANO | Total Haloacetic Acids (HAA5) | 2016-01-01 |
| SAN LORENZO URBANO | Total Haloacetic Acids (HAA5) | 2016-01-01 |
| ACUED.COMUNAL SECT. MANUEL DIAZ | Coliform (TCR) | 2015-11-01 |
| ACUED.COMUNAL SECT. MANUEL DIAZ | Coliform (TCR) | 2015-11-01 |
| SECTOR LOS DIAZ | Coliform (TCR) | 2015-11-01 |
| SECTOR LOS DIAZ | Coliform (TCR) | 2015-11-01 |
| SAN LORENZO URBANO | Total Haloacetic Acids (HAA5) | 2015-10-01 |
| SAN LORENZO URBANO | Total Haloacetic Acids (HAA5) | 2015-10-01 |
| SAN LORENZO URBANO | Coliform (TCR) | 2015-08-01 |
| SAN LORENZO URBANO | Coliform (TCR) | 2015-08-01 |
| SAN LORENZO URBANO | Coliform (TCR) | 2015-08-01 |
| SAN LORENZO URBANO | Coliform (TCR) | 2015-08-01 |
| ASOC. PRO ACUEDUCTO HATO CUCHILLA INC. | Coliform (TCR) | 2015-04-01 |
| ASOC. PRO ACUEDUCTO HATO CUCHILLA INC. | Coliform (TCR) | 2014-10-01 |
| SECTOR LOS DIAZ | Coliform (TCR) | 2014-03-01 |
| SECTOR LOS DIAZ | Coliform (TCR) | 2014-03-01 |
| SECTOR LOS DIAZ | Coliform (TCR) | 2014-02-01 |
| SECTOR LOS DIAZ | Coliform (TCR) | 2014-02-01 |
| EL CERRO CORP. | Coliform (TCR) | 2014-01-01 |
| EL CERRO CORP. | Coliform (TCR) | 2014-01-01 |
| SECTOR LOS DIAZ | Coliform (TCR) | 2014-01-01 |
| SECTOR LOS DIAZ | Coliform (TCR) | 2014-01-01 |
| SECTOR LOS DIAZ | Coliform (TCR) | 2013-11-01 |
What are San Lorenzo's health-based records for?
San Lorenzo's health-based violation records carry 6 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 |
|---|---|---|
| Coliform (TCR) | 35 | 6 |
| Lead and Copper Rule Revisions | 15 | 15 |
| Total Haloacetic Acids (HAA5) | 8 | 1 |
| Tthm | 6 | 2 |
| Surface Water Treatment Rule | 4 | 3 |
| Revised Total Coliform Rule | 2 | 1 |
TRI Facilities in San Lorenzo
| Facility | Total Releases |
|---|---|
| Lanco Manufacturing Corp | 146.1K lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in San Lorenzo, Puerto Rico? ▼
How many water violations does San Lorenzo have in this EPA extract? ▼
What contaminants were found in San Lorenzo water? ▼
How many water systems serve San Lorenzo? ▼
Where does San Lorenzo get its drinking water? ▼
Are there pollution sources near San Lorenzo? ▼
How does San Lorenzo compare in Puerto Rico?
Of the 69 Puerto Rico places with at least one community water system on file, San Lorenzo ranks #4 by number of systems (17).
Either side of it: Ponce (19), Orocovis (17), Adjuntas (16), Utuado (16)
About This Data
Figures here are the current EPA SDWIS extract joined to the 17 community water systems whose service area lists San Lorenzo, 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.