Public water system · DE0000004
ActiveGarrison Lake Pump District
At a glance
Garrison Lake Pump District (PWSID DE0000004) is an active community water system in Kent County, Delaware. It reports serving 17,148 people through 5,719 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 6 violations for this system; 4 are health-based, and the most recent began in July 2002.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
17,148
Service connections
5,719
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Garrison Lake Pump District compare with other water systems in Kent County?
By EPA's size categories, Garrison Lake Pump District is a large system (10,001 to 100,000 people). Kent County has 136 active public water systems, and Garrison Lake Pump District is the 3rd-largest of them by population served. Its population served is about 14 times the county average of 1,201 people per system, and accounts for 10% of the 163,362 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 Garrison Lake Pump District is about 156% above 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 Garrison Lake Pump District?
EPA lists Garrison Lake Pump District 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. 118 of the 136 active systems in Kent County (87%) are also privately owned.
Does Garrison Lake Pump District have drinking water violations?
EPA's records list 6 violations for this system; 4 are health-based, and the most recent began in July 2002. The violations listed here began between December 1983 and July 2002. By type: 4 contaminant level above the legal limit, 1 public notice, recordkeeping or other and 1 monitoring and reporting. The contaminant or rule involved most often is Nitrate (4 of them). EPA lists 4 as resolved and 2 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2002-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2001-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1997-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitratecode 1040 | Yes | Resolved |
| 1997-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitratecode 1040 | Yes | Resolved |
| 1990-02-06 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitratecode 1040 | Yes | Archived |
| 1983-12-21 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitratecode 1040 | Yes | Archived |
All 6 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.
Garrison Lake Pump District: frequently asked questions
Who runs Garrison Lake Pump District?
Garrison Lake Pump District (PWSID DE0000004) is a community water system privately owned. It is regulated by the DE state drinking water program.
How many people does Garrison Lake Pump District serve?
Garrison Lake Pump District reports serving 17,148 people through 5,719 service connections in Kent County, Delaware.
Where does Garrison Lake Pump District 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 Garrison Lake Pump District have any drinking water violations?
EPA's records list 6 violations for this system; 4 are health-based, and the most recent began in July 2002. 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 Garrison Lake Pump District'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 6 violations for this system; 4 are health-based, and the most recent began in July 2002. For current results, consult the system's annual water quality report, EPA ECHO, or the DE state drinking water program.
Where can I find Garrison Lake Pump District's water quality report?
As a community water system, Garrison Lake Pump District 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 Kent County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Dover Water Department | Kent | 39,491 | Community | Groundwater |
| Camden Pump District | Kent | 17,208 | Community | Groundwater |
| Smyrna Water Department | Kent | 11,813 | Community | Groundwater |
| Dover Air Force Base | Kent | 11,000 | Community | Groundwater |
| Milford Water Department | Kent | 9,800 | Community | Groundwater |
| Church Creek (Awc) | Kent | 9,654 | 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, “Garrison Lake Pump District, PWSID DE0000004, Delaware”, https://aquacensus.com/water-systems/delaware/garrison-lake-pump-district-de0000004 (data as of October 1, 2026).