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Nassau County, Florida — public water systems

At a glance

53 active public water systems are filed under Nassau County, Florida in EPA's SDWIS records, together reporting 65,831 people served. The largest is Jea: Lofton Oaks Grid, which reports serving 24,318 people. 11 are community water systems serving people where they live; the other 42 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

53

Population served

65.8K

Community systems

11

Groundwater share

100%

How does Nassau County compare with other Florida counties?

Nassau County has the 29th-most active public water systems among the 138 counties listed for active Florida systems in EPA records; among the 71 with 3 or more systems, the median has 41. Its systems report 65,831 people served in total, the 38th-largest county figure in the state and 0.3% of the statewide total. The average system here reports serving 1,242 people, well below the Florida average of 4,345. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does Nassau County's drinking water come from?

By primary water source, Nassau County's active systems draw on groundwater (53, 100%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 98% and 2.1% across Florida. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Jea: Lofton Oaks Grid, draws primarily on groundwater.

What kinds of water systems operate in Nassau County?

Nassau County's active systems break down as 11 community systems (21%), 5 non-transient non-community systems (9.4%) and 37 transient non-community systems (70%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as private (70%), local government (23%) and state government (7.5%).

The 50 largest water systems in Nassau County

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Active public water systems in Nassau County, Florida
#Water systemCountyPopulation servedTypeSource
1Jea: Lofton Oaks GridNassau24,318CommunityGroundwater
2Fernandina Beach WTPNassau21,925CommunityGroundwater
3Nassau-Amelia UtilitiesNassau9,750CommunityGroundwater
4Hilliard WTPNassau3,036CommunityGroundwater
5Callahan WTPNassau1,730CommunityGroundwater
6Fdot Welcome CenterNassau1,001Transient non-communityGroundwater
7Yulee Primary SchoolNassau860Non-transient non-communityGroundwater
8Callahan Intermediate SchoolNassau700Non-transient non-communityGroundwater
9Marsh Cove CondosNassau350CommunityGroundwater
10Bryceville Elementary SchoolNassau249Non-transient non-communityGroundwater
11White Oak ConservationNassau225Non-transient non-communityGroundwater
12Down Under RestaurantNassau200Transient non-communityGroundwater
13Dayspring VillageNassau121CommunityGroundwater
14Ship Inn MotelNassau100Transient non-communityGroundwater
15St. Mary'S River Fish CampNassau100Transient non-communityGroundwater
16Teakwood MHPNassau80CommunityGroundwater
17Dayspring Senior LivingNassau64CommunityGroundwater
18Amelia Pines (Aka Duck Pond)Nassau60CommunityGroundwater
19Bow ; Arrow CampgroundNassau60Transient non-communityGroundwater
20Starting Point Behavioral HealthNassau57Transient non-communityGroundwater
21Horne Lake Rv ParkNassau34Transient non-communityGroundwater
22OremcNassau30Transient non-communityGroundwater
23Sandpiper MHPNassau30CommunityGroundwater
24Set Free ChurchNassau26Transient non-communityGroundwater
25Dot I-95 Northbound Weigh-in-MotionNassau25Transient non-communityGroundwater
26Dot I-95 Southbound Weigh-in-MotionNassau25Transient non-communityGroundwater
27G ; A Food StoreNassau25Transient non-communityGroundwater
28Dollar General #18284Nassau25Transient non-communityGroundwater
29Dollar General #19601Nassau25Transient non-communityGroundwater
30Hilliard Public Works (Road ; Bridge)Nassau25Transient non-communityGroundwater
31O'Neal Memorial Baptist ChurchNassau25Transient non-communityGroundwater
32Yulee County BuildingNassau25Transient non-communityGroundwater
33Callahan Sports ComplexNassau25Transient non-communityGroundwater
34Bryceville Community CenterNassau25Transient non-communityGroundwater
35Kangaroo ExpressNassau25Transient non-communityGroundwater
36Circle K #6056Nassau25Transient non-communityGroundwater
37Circle K #6284Nassau25Transient non-communityGroundwater
38Yulee Ball ParkNassau25Transient non-communityGroundwater
39New Life Baptist ChurchNassau25Transient non-communityGroundwater
40Shuckers Oyster BarNassau25Transient non-communityGroundwater
41Circle K #6109Nassau25Transient non-communityGroundwater
42Kelly'S Countryside Rv ParkNassau25Transient non-communityGroundwater
43Tropic Motel (Hedges Meat Market)Nassau25Transient non-communityGroundwater
44Amelia Island MarinaNassau25Transient non-communityGroundwater
45Yulee Community Education CenterNassau25Non-transient non-communityGroundwater
46Oak Hill Rv ResortNassau25Transient non-communityGroundwater
47Dollar General #20355Nassau25Transient non-communityGroundwater
48Ncso Training CenterNassau25Transient non-communityGroundwater
49Sunshine Food Mart #315Nassau25Transient non-communityGroundwater
50American Beach VillasNassau25Transient non-communityGroundwater

All other water systems in Nassau County (3)

The remaining active systems filed under Nassau County, largest first, with the population each reports serving.

Nassau County water systems: frequently asked questions

How many public water systems are in Nassau County, Florida?

EPA's SDWIS records file 53 active public water systems under Nassau County, Florida: 11 community systems (21%), 5 non-transient non-community systems (9.4%) and 37 transient non-community systems (70%).

Who supplies drinking water in Nassau County, FL?

The largest community water systems filed under Nassau County are Jea: Lofton Oaks Grid (24,318 people served), Fernandina Beach WTP (21,925 people served) and Nassau-Amelia Utilities (9,750 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.

Does Nassau County's drinking water come from groundwater or surface water?

Of the 53 active public water systems in Nassau County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Jea: Lofton Oaks Grid, uses groundwater.

Where can I find a water quality report for Nassau County?

Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 11 community systems are filed under Nassau County, so the report to look for is the one from the system that supplies your address.

How can I check violations for a water system in Nassau County?

Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.

More Florida water systems

About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Public water systems in Nassau County, Florida”, https://aquacensus.com/water-systems/florida/nassau (data as of October 1, 2026).