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State profile · EPA SDWIS + UCMR5

Florida Drinking Water Quality

5,093 public water systems serve 22,381,282 people across Florida, with every Safe Drinking Water Act violation and UCMR5 PFAS result on record.

5,093
Water systems
184,355
Total violations
93.2%
Systems w/ a violation
54.2%
PFAS detection rate

The verdict

Across Florida, 4,749 of 5,093 water systems (93.2%) carry at least one EPA violation, and 218 of 402 UCMR5-tested systems show PFAS.

184,355
Total EPA violations on record
13%
Health-based (MCL / treatment)
93.2%
Systems with ≥1 violation
54.2%
UCMR5 PFAS detection rate
Water Systems
5,093
Total Violations
184,355
Violation Rate
93.2%
PFAS Detection
54.2%
218 of 402 tested

Violation Composition

How Florida's 184,355 violations break down by type, per EPA SDWIS classification.

Health-based (24,266) Monitoring/Reporting (160,089)
Metric Value Share
Public water systems5,093-
Population served22,381,282-
Total violations184,355100%
Health-based violations24,26613.2%
Systems with violations4,74993.2%
PFAS detection rate218 of 40254.2%

Health-based violations indicate the contaminant exceeded an EPA Maximum Contaminant Level (MCL) or treatment-technique requirement. Monitoring/reporting violations indicate procedural issues (missed tests, late reports) - not necessarily a contamination event.

Largest Water Systems

Most Violations

Counties in Florida

Miami-Dade
167 systems · 3,325,406 served · 3,677 violations
Broward
55 systems · 1,905,863 served · 4,156 violations
Hillsborough
724 systems · 1,701,663 served · 27,775 violations
Orange
114 systems · 1,615,975 served · 5,841 violations
Palm Beach
71 systems · 1,538,245 served · 3,569 violations
Pinellas
13 systems · 1,147,926 served · 410 violations
Duval
93 systems · 938,751 served · 3,651 violations
Brevard
82 systems · 738,073 served · 4,351 violations
Lee
79 systems · 730,128 served · 1,575 violations
Polk
402 systems · 672,690 served · 16,587 violations
Volusia
135 systems · 554,868 served · 4,719 violations
Seminole
60 systems · 510,279 served · 3,348 violations
Sarasota
82 systems · 486,996 served · 992 violations
Manatee
52 systems · 435,178 served · 781 violations
Lake
272 systems · 425,924 served · 9,501 violations
Pasco
210 systems · 413,604 served · 6,345 violations
Collier
44 systems · 382,648 served · 1,949 violations
Escambia
16 systems · 348,012 served · 370 violations
St. Lucie
45 systems · 330,048 served · 3,747 violations
Osceola
64 systems · 328,370 served · 3,645 violations
Marion
491 systems · 291,422 served · 12,979 violations
Okaloosa
35 systems · 283,043 served · 575 violations
Charlotte
29 systems · 248,550 served · 1,094 violations
Leon
41 systems · 236,457 served · 1,017 violations
Alachua
64 systems · 226,130 served · 2,317 violations
St. Johns
56 systems · 221,945 served · 1,953 violations
Santa Rosa
23 systems · 221,076 served · 463 violations
Clay
79 systems · 215,697 served · 1,593 violations
Bay
36 systems · 208,775 served · 660 violations
Hernando
113 systems · 178,191 served · 3,264 violations

Showing top 30 of 67 counties.

Drinking Water Guides

Frequently Asked Questions

How many water systems are in Florida?
Florida has 5,093 public water systems serving approximately 22,381,282 people. These include community water systems, non-transient non-community systems, and transient non-community systems regulated under the Safe Drinking Water Act.
How many drinking water violations are in Florida?
Florida has 184,355 total drinking water violations on record, with 24,266 classified as health-based violations. 93.2% of water systems in the state have at least one violation.
Has PFAS been found in Florida drinking water?
Of 402 water systems tested for PFAS in Florida, 218 had PFAS detected, a 54.2% detection rate. PFAS are persistent "forever chemicals" that do not break down in the environment.
What is the violation rate for Florida water systems?
Florida's violation rate is 93.2%. This measures the percentage of public water systems that have at least one recorded violation in the EPA SDWIS database, including both health-based and monitoring/reporting violations.
Where does this Florida water data come from?
All drinking water data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS is the federal database that tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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.

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.