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Community Water System · PWS PR0002812

Miraflores

Arecibo, Puerto Rico 00612 - drinking water served from surface water sources to 5,596 people, tracked in EPA SDWIS and UCMR5.

5,596
People served
80
EPA violations
12
Health-based
Untested
UCMR5 result

The verdict

EPA records 80 drinking-water violations at Miraflores, 15% of them health-based - below the Puerto Rico per-system average.

80
Total EPA violations on record
15%
Health-based (MCL / treatment failure)
5,596
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Miraflores

Miraflores is a local-owned community water system that delivers drinking water to 5,596 residents in Arecibo, Puerto Rico (Arecibo Municipio County) through 2,096 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 80 total violations for this system , of which 12 (15%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 64 monitoring and reporting violations are on file. The most recent violation on record dates to 2004.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 12 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Puerto Rico, EPA tracks 458 public water systems serving 3,328,141 people, with 164,144 cumulative violations and 34,657 health-based violations on record. About 100% of systems in the state carry at least one violation, and state-wide the average per system is 358.4 violations. Statewide, 40 of 99 UCMR5-tested systems have reported PFAS detections (40.4%).

Miraflores's 80 violations sit below the Puerto Rico average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
5,596
Total Violations
80
Health-Based Violations
12
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
2,096
County
Arecibo Municipio
School/Daycare
Yes
MCL Violations
12
Monitoring Violations
64
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 12 2004
Heptachlor MR 5 1998
1,2-DIBROMO-3-CHLOROPROPANE MR 2 1998
Hexachlorocyclopentadiene MR 2 1998
2,4-D MR 2 1998
Chlordane MR 2 1998
LASSO MR 2 1998
Endrin MR 2 1998
Carbofuran MR 2 1998
OXAMYL MR 2 1998
Glyphosate MR 2 1998
Heptachlor epoxide MR 2 1998
Di(2-ethylhexyl) phthalate MR 2 1998
Diquat MR 2 1998
Atrazine MR 2 1998
HEXACHLOROBENZENE MR 2 1998
Endothall MR 2 1998
Total Polychlorinated Biphenyls (PCB) MR 2 1998
ETHYLENE DIBROMIDE MR 2 1998
Picloram MR 2 1998
BHC-GAMMA MR 2 1998
Pentachlorophenol MR 2 1998
2,4,5-TP MR 2 1998
Dalapon MR 2 1998
Benzo(a)pyrene MR 2 1998
Methoxychlor MR 2 1998
Toxaphene MR 2 1998
Dinoseb MR 2 1998
Di(2-ethylhexyl) adipate MR 2 1998
Simazine MR 2 1998

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Miraflores.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID PR0002812 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Puerto Rico Drinking Water Authority

Puerto Rico's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find PR regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2004 Coliform (TCR) MCL 12 SDWIS / PR0002812 / 3100
1998 Heptachlor MR 5 SDWIS / PR0002812 / 2065
1998 1,2-DIBROMO-3-CHLOROPROPANE MR 2 SDWIS / PR0002812 / 2931
1998 Hexachlorocyclopentadiene MR 2 SDWIS / PR0002812 / 2042
1998 2,4-D MR 2 SDWIS / PR0002812 / 2105
1998 Chlordane MR 2 SDWIS / PR0002812 / 2959
1998 LASSO MR 2 SDWIS / PR0002812 / 2051
1998 Endrin MR 2 SDWIS / PR0002812 / 2005
1998 Carbofuran MR 2 SDWIS / PR0002812 / 2046
1998 OXAMYL MR 2 SDWIS / PR0002812 / 2036
1998 Glyphosate MR 2 SDWIS / PR0002812 / 2034
1998 Heptachlor epoxide MR 2 SDWIS / PR0002812 / 2067
1998 Di(2-ethylhexyl) phthalate MR 2 SDWIS / PR0002812 / 2039
1998 Diquat MR 2 SDWIS / PR0002812 / 2032
1998 Atrazine MR 2 SDWIS / PR0002812 / 2050

How Miraflores Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Miraflores Puerto Rico avg Federal benchmark
Total violations 80 358.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 12 75.7 Indicates a contaminant exceeded a federal MCL
PFAS detection None 40.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 5,596 7,267 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 458 regulated public water systems in Puerto Rico.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Miraflores water safe to drink? ▼
Miraflores (PWS ID: PR0002812) has 80 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 5,596 people using Surface Water sources.
How many people does Miraflores serve? ▼
Miraflores serves 5,596 people in Arecibo, Puerto Rico. It is a Local-owned system using Surface Water water sources with 2,096 service connections.
What type of violations does Miraflores have? ▼
Miraflores has 80 total violations: 12 health-based violations (MCL exceedances or treatment failures), 64 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Miraflores water? ▼
No PFAS testing data is available for Miraflores under the EPA's UCMR5 monitoring program.
What water source does Miraflores use? ▼
Miraflores uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

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 system's figures are rendered directly from 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.