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Counties → Puerto Rico

San Juan Municipio County, Puerto Rico

Water Systems
4
Population Served
1,077,982
Total Violations
1,811
784 health-based
PFAS Detected
1
of 2 tested

Violation Analysis

100.0%
Systems with Violations
452.8
Avg Violations per System
43.3%
Health-Based Violations

Water Source Types

SW
2 systems (50%)
GW
2 systems (50%)

PFAS Contamination

2
Systems Tested
1
PFAS Detected
50.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

San Juan Municipio Puerto Rico water systems by violation status, EPA SDWIS records.

No violations on record (0) One or more violations (4)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Metropolitano 1,077,332 1,673 Detected
Hato Rey Partners, LLC 375 69 -
Vaqueria Tres Monjitas 250 15 -
Superacueducto 25 54 Clean

Other Counties in Puerto Rico

Mayaguez Municipio County
3 systems · 162,876 served · 1,429 violations
Penuelas Municipio County
12 systems · 133,990 served · 7,659 violations
Rincon Municipio County
1 systems · 123,885 served · 1,566 violations
Arecibo Municipio County
12 systems · 118,557 served · 2,669 violations
Caguas Municipio County
23 systems · 86,609 served · 5,193 violations
Naguabo Municipio County
5 systems · 83,376 served · 2,551 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in San Juan Municipio County? ▼
San Juan Municipio County has 1,811 total drinking water violations across 4 water systems, of which 784 are health-based violations. 100.0% of systems have at least one violation.
How many people get water from San Juan Municipio County systems? ▼
Water systems in San Juan Municipio County serve approximately 1,077,982 people through 4 public water systems.
Has PFAS been detected in San Juan Municipio County water? ▼
Of 2 water systems tested for PFAS in San Juan Municipio County, 1 had PFAS detected (50.0% detection rate).
What types of water sources supply San Juan Municipio County? ▼
Water systems in San Juan Municipio County use SW (2 systems), GW (2 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 43.3% of San Juan Municipio County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

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

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.