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OPA LOCKA, CITY OF

PWS ID: FL4131001 · OPALOCKA, Florida 33054

OPA LOCKA, CITY OF serves 16,479 people in OPALOCKA, Florida using Groundwater water sources. It has 67 recorded EPA violations, including 2 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (6 compounds found).

Water Quality Snapshot: OPA LOCKA, CITY OF

OPA LOCKA, CITY OF is a local-owned community water system that delivers drinking water to 16,479 residents in OPALOCKA, Florida (Miami-Dade County) through 4,800 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 67 total violations for this system , of which 2 (3%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 41 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Revised Total Coliform Rule, recorded in 13 violations (MON). Under EPA's UCMR5 PFAS monitoring program, 6 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 0.011 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across Florida, EPA tracks 5,093 public water systems serving 22,381,282 people, with 184,355 cumulative violations and 24,266 health-based violations on record. About 93% of systems in the state carry at least one violation, and state-wide the average per system is 36.2 violations. OPA LOCKA, CITY OF's 67 violations sit above the Florida average. Statewide, 218 of 402 UCMR5-tested systems have reported PFAS detections (54.2%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

6 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
16,479
Total Violations
67
Health-Based Violations
2
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
4,800
County
Miami-Dade
School/Daycare
No
MCL Violations
2
Monitoring Violations
41
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule MON 13 2025
Lead and Copper Rule MR 9 2017
Consumer Confidence Rule Other 7 2007
Coliform (TCR) MR 6 2013
Total Haloacetic Acids (HAA5) MR 5 2023
TTHM MR 5 2023
Stage 2 Disinfectants and Disinfection Byproducts Rule MR 3 2009
Coliform (TCR) MCL 2 2015

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 10 of 60 samples detected PFAS.

Contaminant Date Result MRL Status
PFDoA 6/30/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 6/30/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 6/30/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 6/30/2023 0.0110 µg/L 0.004 µg/L Detected
PFNA 6/30/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 6/30/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 6/30/2023 0.0031 µg/L 0.003 µg/L Detected
PFHxA 6/30/2023 0.0045 µg/L 0.003 µg/L Detected
PFBS 6/30/2023 0.0038 µg/L 0.003 µg/L Detected
NFDHA 6/30/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 6/30/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 6/30/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 6/30/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFMBA 6/30/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 6/30/2023 0.0061 µg/L 0.003 µg/L Detected
9Cl-PF3ONS 6/30/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFHpS 6/30/2023 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 6/30/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 6/30/2023 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 6/30/2023 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 6/30/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 6/30/2023 0.0085 µg/L 0.005 µg/L Detected
6:2 FTS 6/30/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 6/30/2023 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 6/30/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 4/13/2023 <0.008 µg/L 0.008 µg/L Not Detected
lithium 4/13/2023 <9 µg/L 9 µg/L Not Detected
NMeFOSAA 4/13/2023 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 4/13/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 4/13/2023 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 10/25/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFDoA 10/25/2023 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 10/25/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFBS 10/25/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 10/25/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 10/25/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 10/25/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 10/25/2023 0.0097 µg/L 0.004 µg/L Detected
PFOA 10/25/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 10/25/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 10/25/2023 <0.007 µg/L 0.007 µg/L Not Detected
NFDHA 10/25/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFTA 10/25/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFHxA 10/25/2023 0.0042 µg/L 0.003 µg/L Detected
lithium 10/25/2023 <9 µg/L 9 µg/L Not Detected
PFPeS 10/25/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 10/25/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 10/25/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 10/25/2023 0.0058 µg/L 0.003 µg/L Detected
PFMPA 10/25/2023 <0.004 µg/L 0.004 µg/L Not Detected

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 OPA LOCKA, CITY OF.

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 FL4131001 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Florida Drinking Water Authority

Florida Department of Environmental Protection — Drinking Water Program is the primacy agency that licenses and inspects OPA LOCKA, CITY OF under EPA-delegated authority.

Open FL regulator portal

Source: Florida Department of Environmental Protection — Drinking Water Program

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
2025 Revised Total Coliform Rule MON 13 SDWIS / FL4131001 / 8000
2023 Total Haloacetic Acids (HAA5) MR 5 SDWIS / FL4131001 / 2456
2023 TTHM MR 5 SDWIS / FL4131001 / 2950
2017 Lead and Copper Rule MR 9 SDWIS / FL4131001 / 5000
2015 Coliform (TCR) MCL 2 SDWIS / FL4131001 / 3100
2013 Coliform (TCR) MR 6 SDWIS / FL4131001 / 3100
2009 Stage 2 Disinfectants and Disinfection Byproducts Rule MR 3 SDWIS / FL4131001 / 0600
2007 Consumer Confidence Rule Other 7 SDWIS / FL4131001 / 7000

How OPA LOCKA, CITY OF Compares

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

Metric OPA LOCKA, CITY OF Florida avg Federal benchmark
Total violations 67 36.2 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 2 4.8 Indicates a contaminant exceeded a federal MCL
PFAS detection 6 compounds 54.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 16,479 4,395 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 5,093 regulated public water systems in Florida.

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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is OPA LOCKA, CITY OF water safe to drink? ▼
OPA LOCKA, CITY OF (PWS ID: FL4131001) has 67 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 6 PFAS compounds found. This system serves 16,479 people using Groundwater sources.
How many people does OPA LOCKA, CITY OF serve? ▼
OPA LOCKA, CITY OF serves 16,479 people in OPALOCKA, Florida. It is a Local-owned system using Groundwater water sources with 4,800 service connections.
What type of violations does OPA LOCKA, CITY OF have? ▼
OPA LOCKA, CITY OF has 67 total violations: 2 health-based violations (MCL exceedances or treatment failures), 41 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in OPA LOCKA, CITY OF water? ▼
Yes. UCMR5 testing detected 6 PFAS compounds in OPA LOCKA, CITY OF's water supply: PFOS, PFHpA, PFHxA, PFBS, PFPeA, and others. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does OPA LOCKA, CITY OF use? ▼
OPA LOCKA, CITY OF uses Groundwater 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.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

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

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial