How many water violations are in Lake County?

Lake County has 9,501 total drinking water violations across 272 water systems, of which 691 are health-based violations. 97.1% of systems have at least one violation.

How many people get water from Lake County systems?

Water systems in Lake County serve approximately 425,924 people through 272 public water systems.

Has PFAS been detected in Lake County water?

Under EPA UCMR5, 12 of 18 tested systems in Lake County had at least one PFAS detection (66.7% of the UCMR5-tested subset - not of all 272 SDWIS systems).

What types of water sources supply Lake County?

Water systems in Lake County use GW (272 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. 7.3% of Lake County's violations are health-based. Among counties with any SDWIS violations, this extract puts Lake County in the lower health-based share band. Not all violations indicate immediate health risk, but they require corrective action.

Where does Lake County sit among U.S. counties for water-system population?

According to EPA SDWIS county population served used on /counties, Lake County ranks #167 of 3,254 counties by people served, and #15 of 67 counties in Florida. Ordinals use the same total_population DESC sort as the counties directory. See /methodology#corpus-placement.

Counties → Florida

Lake County, Florida

Compiled by PlainWater · May 15, 2026

SDWIS compliance plate

Sheet FL069 · Lake County 272 sys · 9,501 viol · #167/3254

VIOL-SEVERE · HEALTH-LOW · RANK-TOP · PHOTO-FINISH · PFAS-HIGH · SRC-GW · SYS-LARGE · BOOK-FULL

VIOL-SEVERE 97.1% flagged
HEALTH-LOW 7.3% health
RANK-TOP #167/3254
PHOTO-FINISH ±0.1 pp
PFAS-HIGH 66.7% detect
SRC-GW GW lead 100%
SYS-LARGE 272 systems
BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Palm Beach County (+ 0.1 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Lake County ranks #167 of 3,254 counties by people served, and #15 of 67 counties in Florida. See methodology · corpus placement.

Lake County standing, mid-flagged corpus third

Flagged-system rate 97.1% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 7.3% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 66.7% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #167 of 3,254 · #15 of 67 in Florida.

Water Systems

System Name	Population	Violations	PFAS
Leesburg, City Of	43,148	79	Detected
Eustis, City of (4 Wtps)	39,721	91	Detected
Clermont East Water System (2 Wps)	39,279	40	Detected
Mount Dora, City of (2Wps)	39,120	67	Detected
Lake Utility Services Inc North (8 Wps)	24,798	101	Detected
Groveland Water Department	23,628	51	-
Tavares Water Department (4 Wps)	22,007	103	Clean
Minneola Water Department (2 Wps)	21,521	66	Detected
Villages of Lake-Sumter - Wtps 1, 3, ; 5	18,675	95	Detected
Lake Utility Services Inc South	13,198	36	Clean
Mascotte Water Department	12,250	117	Clean
Clermont, City of (2 Wps)	10,048	51	Clean
Southlake Utilities	9,950	16	Detected
City of Leesburg / East	9,716	24	Detected
Lady Lake Central - Wps 1,2,3	7,090	85	Detected
Leesburg/The Plantation	5,141	36	Clean
Fruitland Park, City of (3 Wps)	5,127	52	Detected
Umatilla Water Works (2 Wps)	3,948	51	Clean
Sugarloaf Water Treatment Plant	3,885	15	-
Eustis Eastern WTP	3,301	3	-
Leesburg/Royal Highlands	3,254	13	-
Clerbrook RV Resorts (2 Wps)	3,142	53	-
Mid-Florida Lakes Yacht Club	3,065	117	-
St. John's River Utility Inc	2,498	67	-
Pennbrooke	2,488	28	-
Leesburg/Highland Lakes	2,444	25	-
Silver Lake Estates	2,355	27	-
Howey in the Hills (2 Wps)	2,027	67	-
Hawthorne at Leesburg	1,883	74	-
Holiday RV Village	1,725	19	-
Lake Correctional Institution	1,500	65	-
Water Oak Country Club Estates	1,465	30	-
Harbor Hills - 2 Wtps	1,219	28	Detected
Lake Griffin Isles MHP (2 Wtps)	1,212	40	-
Round Lake Charter Scho	1,200	32	-
Montverde Water Department (2Wps)	1,198	38	-
Heathrow Country Estates (Red Tail)	1,057	12	-
Oak Springs Mobile Home Park	993	47	-
Wedgewood Subdivision	980	40	-
Western Shores Subdivision	963	38	-
Astatula Elementary School	900	20	-
Seminole Springs Elementary	900	29	-
Montverde Mobile Home SD	800	36	-
Summit Chase Villas	770	34	-
Sunlake Estates	751	43	-
Valencia Terrace Subdivision	750	39	-
King's Cove Subdivision	732	31	-
Fairways at Mount Plymouth	660	9	-
Spring Creek Charter School	640	26	-
Black Bear Reserve	625	11	-

Compare beyond Florida

Mid-flagged peers for Lake County

Cross-state counties nearest Lake County on flagged-system share (97.1%) and cumulative violation count (9,501). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers

Read our methodology · Check your water system - 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

Compiled by PlainWater, Drinking Water Quality Editorial Process · May 15, 2026

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.