Public water system · MS0170022
ActiveCity of Horn Lake
At a glance
City of Horn Lake (PWSID MS0170022) is an active community water system in DeSoto County, Mississippi. It reports serving 13,649 people through 5,394 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2008.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
13,649
Service connections
5,394
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does City of Horn Lake compare with other water systems in DeSoto County?
By EPA's size categories, City of Horn Lake is a large system (10,001 to 100,000 people). DeSoto County has 22 active public water systems, and City of Horn Lake is the 4th-largest of them by population served. Its population served is about 48% above the county average of 9,207 people per system, and accounts for 6.7% of the 202,543 people reported by systems filed under the county. Across Mississippi, the 1,133 active systems average 2,832 people each. Nationally, the average active community water system reports serving 6,703 people, so City of Horn Lake is about twice that figure.
What does “community water system” mean?
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. Mississippi has 947 active community water systems, 84% of the state's 1,133 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,053 Mississippi systems (93%) list groundwater as their primary source.
Who owns and regulates City of Horn Lake?
EPA lists City of Horn Lake as owned by a local government. The MS state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 7 of the 22 active systems in DeSoto County (32%) are also owned by a local government.
Does City of Horn Lake have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2008. The violations listed here began between July 2008 and July 2008. By type: 12 monitoring and reporting. The contaminant or rule involved most often is Gross alpha (excluding radon and uranium) (4 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2008-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
The 12 most recent 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.
City of Horn Lake: frequently asked questions
Who runs City of Horn Lake?
City of Horn Lake (PWSID MS0170022) is a community water system owned by a local government. It is regulated by the MS state drinking water program.
How many people does City of Horn Lake serve?
City of Horn Lake reports serving 13,649 people through 5,394 service connections in DeSoto County, Mississippi.
Where does City of Horn Lake 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 City of Horn Lake have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2008. 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 City of Horn Lake'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2008. For current results, consult the system's annual water quality report, EPA ECHO, or the MS state drinking water program.
Where can I find City of Horn Lake's water quality report?
As a community water system, City of Horn Lake must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in DeSoto County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Southaven | DeSoto | 56,000 | Community | Groundwater |
| City of Olive Branch | DeSoto | 54,025 | Community | Groundwater |
| City of Hernando | DeSoto | 14,457 | Community | Groundwater |
| Horn Lake Water Association | DeSoto | 12,735 | Community | Groundwater |
| Lewisburg Water Association | DeSoto | 9,390 | Community | Groundwater |
| Walls Water Assn- Lake Forest | DeSoto | 9,298 | 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, “City of Horn Lake, PWSID MS0170022, Mississippi”, https://aquacensus.com/water-systems/mississippi/city-of-horn-lake-ms0170022 (data as of October 1, 2026).