Public water system · FL2450145
ActiveCallahan Intermediate School
At a glance
Callahan Intermediate School (PWSID FL2450145) is an active non-transient non-community water system in Nassau County, Florida. It reports serving 700 people through 7 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in July 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
700
Service connections
7
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Callahan Intermediate School compare with other water systems in Nassau County?
By EPA's size categories, Callahan Intermediate School is a small system (501 to 3,300 people). Nassau County has 53 active public water systems. Its population served is about 44% below the county average of 1,242 people per system, and accounts for 1.1% of the 65,831 people reported by systems filed under the county. Across Florida, the 5,197 active systems average 4,345 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Callahan Intermediate School is about 63% above that figure.
What does “non-transient non-community water system” mean?
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. Florida has 780 active non-transient non-community water systems, 15% of the state's 5,197 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 4,996 Florida systems (96%) list groundwater as their primary source.
Who owns and regulates Callahan Intermediate School?
EPA lists Callahan Intermediate School as owned by a local government. The FL state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 12 of the 53 active systems in Nassau County (23%) are also owned by a local government.
Does Callahan Intermediate School have drinking water violations?
EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in July 2021. The violations listed here began between January 2009 and July 2021. By type: 4 monitoring and reporting and 3 contaminant level above the legal limit. The contaminant or rule involved most often is Lead and Copper Rule (2 of them). EPA lists 7 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2021-07-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2015-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2015-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2014-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2009-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
All 7 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Callahan Intermediate School: frequently asked questions
Who runs Callahan Intermediate School?
Callahan Intermediate School (PWSID FL2450145) is a non-transient non-community water system owned by a local government. It is regulated by the FL state drinking water program.
How many people does Callahan Intermediate School serve?
Callahan Intermediate School reports serving 700 people through 7 service connections in Nassau County, Florida.
Where does Callahan Intermediate School get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Callahan Intermediate School have any drinking water violations?
EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in July 2021. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Callahan Intermediate School's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in July 2021. For current results, consult EPA ECHO, or the FL state drinking water program.
Where can I find Callahan Intermediate School's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Callahan Intermediate School is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Nassau County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Jea: Lofton Oaks Grid | Nassau | 24,318 | Community | Groundwater |
| Fernandina Beach WTP | Nassau | 21,925 | Community | Groundwater |
| Nassau-Amelia Utilities | Nassau | 9,750 | Community | Groundwater |
| Hilliard WTP | Nassau | 3,036 | Community | Groundwater |
| Callahan WTP | Nassau | 1,730 | Community | Groundwater |
| Fdot Welcome Center | Nassau | 1,001 | Transient non-community | Groundwater |
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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, “Callahan Intermediate School, PWSID FL2450145, Florida”, https://aquacensus.com/water-systems/florida/callahan-intermediate-school-fl2450145 (data as of October 1, 2026).