Public water system · DE00A0169
ActiveMallard Lakes
At a glance
Mallard Lakes (PWSID DE00A0169) is an active community water system in Sussex County, Delaware. It reports serving 1,500 people through 479 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,500
Service connections
479
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Mallard Lakes compare with other water systems in Sussex County?
By EPA's size categories, Mallard Lakes is a small system (501 to 3,300 people). Sussex County has 246 active public water systems. Its population served is roughly in line with the county average of 1,556 people per system, and accounts for 0.4% of the 382,753 people reported by systems filed under the county. Across Delaware, the 494 active systems average 2,238 people each. Nationally, the average active community water system reports serving 6,703 people, so Mallard Lakes is well below 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. Delaware has 219 active community water systems, 44% of the state's 494 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 459 Delaware systems (93%) list groundwater as their primary source.
Who owns and regulates Mallard Lakes?
EPA lists Mallard Lakes as privately owned. The DE state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 215 of the 246 active systems in Sussex County (87%) are also privately owned.
Does Mallard Lakes have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Mallard Lakes. For the latest compliance status, check EPA ECHO for current compliance history.
Mallard Lakes: frequently asked questions
Who runs Mallard Lakes?
Mallard Lakes (PWSID DE00A0169) is a community water system privately owned. It is regulated by the DE state drinking water program.
How many people does Mallard Lakes serve?
Mallard Lakes reports serving 1,500 people through 479 service connections in Sussex County, Delaware.
Where does Mallard Lakes 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 Mallard Lakes have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Mallard Lakes' 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 Safe Drinking Water Act records list no violations for this system. For current results, consult the system's annual water quality report, EPA ECHO, or the DE state drinking water program.
Where can I find Mallard Lakes' water quality report?
As a community water system, Mallard Lakes 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 Sussex County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Rehoboth Pump District (Tui) | Sussex | 81,417 | Community | Groundwater |
| Bethany Bay Pump District | Sussex | 51,000 | Community | Groundwater |
| Dewey Beach Water Department | Sussex | 31,000 | Community | Purchased groundwater |
| Rehoboth Beach Water Department | Sussex | 25,000 | Community | Groundwater |
| Artesian Southern Sussex Regional | Sussex | 18,215 | Community | Groundwater |
| Sussex Shores Water Company | Sussex | 12,450 | 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, “Mallard Lakes, PWSID DE00A0169, Delaware”, https://aquacensus.com/water-systems/delaware/mallard-lakes-de00a0169 (data as of October 1, 2026).