Public water system · DE0000614

Active

Middletown Water Department

At a glance

Middletown Water Department (PWSID DE0000614) is an active community water system in New Castle County, Delaware. It reports serving 17,700 people through 8,336 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 8 violations for this system; 4 are health-based, and the most recent began in July 2020.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

17,700

Service connections

8,336

Primary source

SWP

Purchased surface water

System type

CWS

Community water system

System record

PWSIDDE0000614

System typeCommunity water system

Activity statusActive

Population served17,700

Service connections8,336

Primary water sourcePurchased surface water

Owner typeLocal government

Primacy agencyDE state drinking water program

City servedMiddletown

StateDelaware

ZIP—

CountyNew Castle County

How does Middletown Water Department compare with other water systems in New Castle County?

By EPA's size categories, Middletown Water Department is a large system (10,001 to 100,000 people). New Castle County has 76 active public water systems, and Middletown Water Department is the 5th-largest of them by population served. Its population served is about 149% above the county average of 7,119 people per system, and accounts for 3.3% of the 541,043 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 Middletown Water Department is about 164% 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 6 Delaware systems (1.2%) list purchased surface water as their primary source.

Who owns and regulates Middletown Water Department?

EPA lists Middletown Water Department as owned by a local government. 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. 12 of the 76 active systems in New Castle County (16%) are also owned by a local government.

Does Middletown Water Department have drinking water violations?

EPA's records list 8 violations for this system; 4 are health-based, and the most recent began in July 2020. The violations listed here began between October 2002 and July 2020. By type: 4 contaminant level above the legal limit, 3 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 8 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
2020-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved
2010-08-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2009-02-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2008-09-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2008-08-01	Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26	Total coliform bacteria (TCR)code 3100	No	Resolved
2008-03-01	Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24	Total coliform bacteria (TCR)code 3100	No	Resolved
2007-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2002-10-01	Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51	Lead and Copper Rulecode 5000	No	Resolved

All 8 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.

Middletown Water Department: frequently asked questions

Who runs Middletown Water Department?

Middletown Water Department (PWSID DE0000614) is a community water system owned by a local government. It is regulated by the DE state drinking water program.

How many people does Middletown Water Department serve?

Middletown Water Department reports serving 17,700 people through 8,336 service connections in New Castle County, Delaware.

Where does Middletown Water Department get its water?

EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.

Does Middletown Water Department have any drinking water violations?

EPA's records list 8 violations for this system; 4 are health-based, and the most recent began in July 2020. 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 Middletown Water Department'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 8 violations for this system; 4 are health-based, and the most recent began in July 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the DE state drinking water program.

Where can I find Middletown Water Department's water quality report?

As a community water system, Middletown Water Department 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 New Castle County

Water system	County	Population served	Type	Source
Artesian Water Company	New Castle	231,114	Community	Purchased surface water
Wilmington Water Department	New Castle	107,976	Community	Surface water
Veolia Water Delaware, Inc.	New Castle	100,495	Community	Surface water
Newark Water Department	New Castle	40,000	Community	Surface water
Municipal Services Commission	New Castle	5,549	Community	Groundwater
East Ncc District	New Castle	5,538	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, “Middletown Water Department, PWSID DE0000614, Delaware”, https://aquacensus.com/water-systems/delaware/middletown-water-department-de0000614 (data as of October 1, 2026).