Hancock County, Mississippi — public water systems
At a glance
16 active public water systems are filed under Hancock County, Mississippi in EPA's SDWIS records, together reporting 49,251 people served. The largest is Diamondhead Utilities-North, which reports serving 12,577 people. 9 are community water systems serving people where they live; the other 7 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
16
Population served
49.3K
Community systems
9
Groundwater share
100%
How does Hancock County compare with other Mississippi counties?
Hancock County has the 20th-most active public water systems among the 98 counties listed for active Mississippi systems in EPA records; among the 82 with 3 or more systems, the median has 12. Its systems report 49,251 people served in total, the 17th-largest county figure in the state and 1.5% of the statewide total. The average system here reports serving 3,078 people, roughly in line with the Mississippi average of 2,832. 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 Hancock County's drinking water come from?
By primary water source, Hancock County's active systems draw on groundwater (13, 81%) and purchased groundwater (3, 19%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 99% and 1.2% across Mississippi. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Diamondhead Utilities-North, draws primarily on groundwater.
What kinds of water systems operate in Hancock County?
Hancock County's active systems break down as 9 community systems (56%), 2 non-transient non-community systems (13%) and 5 transient non-community systems (31%). 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 (44%), local government (38%), public/private partnership (13%) and federal government (6.3%).
Water systems in Hancock County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Diamondhead Utilities-North | Hancock | 12,577 | Community | Groundwater |
| 2 | City of Bay St Louis | Hancock | 9,284 | Community | Groundwater |
| 3 | City of Waveland | Hancock | 6,400 | Community | Groundwater |
| 4 | Standard Dedeaux Water Association | Hancock | 5,386 | Community | Groundwater |
| 5 | Stennis Space Center | Hancock | 4,700 | Community | Groundwater |
| 6 | Silver Slipper Casino & Hotel | Hancock | 3,285 | Non-transient non-community | Groundwater |
| 7 | Hancock County Water & Sewer | Hancock | 3,254 | Community | Purchased groundwater |
| 8 | Hancock County Water & Sewer- Bayside | Hancock | 2,458 | Community | Purchased groundwater |
| 9 | Pearlington Water and Sewer District | Hancock | 1,412 | Community | Purchased groundwater |
| 10 | Coffee Culture | Hancock | 150 | Transient non-community | Groundwater |
| 11 | Lafrance Fishing Camp | Hancock | 100 | Transient non-community | Groundwater |
| 12 | Port Bienville Ind Park | Hancock | 95 | Non-transient non-community | Groundwater |
| 13 | Kapalama Well | Hancock | 50 | Transient non-community | Groundwater |
| 14 | Bay Hide Away Rv Park & Campground | Hancock | 50 | Transient non-community | Groundwater |
| 15 | Infinity Science Center | Hancock | 25 | Transient non-community | Groundwater |
| 16 | Sunrise Mobile Home Park | Hancock | 25 | Community | Groundwater |
Hancock County water systems: frequently asked questions
How many public water systems are in Hancock County, Mississippi?
EPA's SDWIS records file 16 active public water systems under Hancock County, Mississippi: 9 community systems (56%), 2 non-transient non-community systems (13%) and 5 transient non-community systems (31%).
Who supplies drinking water in Hancock County, MS?
The largest community water systems filed under Hancock County are Diamondhead Utilities-North (12,577 people served), City of Bay St Louis (9,284 people served) and City of Waveland (6,400 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 Hancock County's drinking water come from groundwater or surface water?
Of the 16 active public water systems in Hancock County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Diamondhead Utilities-North, uses groundwater.
Where can I find a water quality report for Hancock 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. 9 community systems are filed under Hancock 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 Hancock 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 Mississippi water systems
- All Mississippi public water systems· 1,133 active
- Yazoo County· 18 systems
- Copiah County· 17 systems
- Madison County· 17 systems
- Montgomery County· 17 systems
- Jasper County· 16 systems
- Pike County· 16 systems
- How to find out who supplies your drinking water
- How to find and read your annual water quality report
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 Hancock County, Mississippi”, https://aquacensus.com/water-systems/mississippi/hancock (data as of October 1, 2026).