County · Delaware

New Castle County, Delaware: drinking water records

Name: Drinking water records for New Castle County, Delaware
Creator: U.S. Environmental Protection Agency
License: https://www.usa.gov/government-works

Explore EPA records for 31 community water systems across 29 ZIP codes in New Castle County, then find water-testing resources and available recent monitoring-station readings.

In focus31Community water systems

Public records. Clearer context.

Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages

Drinking-water records

EPA survey and compliance records are historical reports. UCMR 5 results are available for 8 of the 31 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.

systems in EPA's PFAS survey

systems where PFAS was found

systems at or above the PFOA or PFOS limit, on the yearly-average basis EPA uses

systems that have reached the lead action level

systems with a health-based violation since 2016

System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.

Water systems in this county

All 31 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.

Water system	People served	PFAS survey results	PFAS found	Health-based violations	Lead, 9 in 10 homes at or below
Wilmington Water Department DE0000663	107,976	240	6	1	0 ppbbelow the action level
Artesian Water Company DE0000552	231,114	1,355	8	0	1 ppbbelow the action level
Veolia Water Delaware, INC DE0000564	100,495	240	9	0	2 ppbbelow the action level
Newark Water Department DE0000630	40,000	180	8	0	1 ppbbelow the action level
Middletown Water Department DE0000614	17,700	120	0	0	0 ppbbelow the action level
Municipal Services Commission DE0000634	5,549	60	2	0	0 ppbbelow the action level
East Ncc District DE00A0334	5,538	120	0	0	0 ppbbelow the action level
North West Pump District DE00A0347	4,149	180	0	0	0.8 ppbbelow the action level
Willow Grove Mill DE0020122	3,090	0	0	0	0 ppbbelow the action level
Delaware City Water Department (Awc) DE0000566	2,610	0	0	0	1 ppbbelow the action level
Delaware Correctional Center DE0000011	2,000	0	0	0	0 ppbbelow the action level
Parkside DE0020123	1,467	0	0	0	0 ppbbelow the action level
South East Pump District DE00A0376	936	0	0	0	0 ppbbelow the action level
Dove Run DE0020124	909	0	0	0	0 ppbbelow the action level
Villagebrook DE0020141	847	0	0	0	10.9 ppbbelow the action level
Winterthur DE0000503	687	0	0	0	12 ppbbelow the action level
Hunters Run DE0020139	683	0	0	0	7 ppbbelow the action level
Kingsmill DE0020140	381	0	0	0	0 ppbbelow the action level
St Andrews Apartments DE0020144	360	0	0	0	0 ppbbelow the action level
Ascot Landing Subdivision DE0020148	338	0	0	0	0 ppbbelow the action level
St Andrews Apartment New Addition DE0020137	272	0	0	0	0 ppbbelow the action level
Glasgow Pines II DE0020138	235	0	0	0	5.3 ppbbelow the action level
Ponds of Odessa (Awc) DE0020088	216	0	0	0	0 ppbbelow the action level
Bayview Improvement Company (Awc) DE0000553	214	0	0	0	1 ppbbelow the action level
Frederick Lodge Pump District DE0000007	204	0	0	0	1.2 ppbbelow the action level
Drawyers Creek Pump District DE00A0353	192	0	0	0	0.6 ppbbelow the action level
Summit Pond Pump District DE0000140	177	0	0	0	1.5 ppbbelow the action level
St Andrews Single Family Homes DE0020143	120	0	0	0	0 ppbbelow the action level
Mt Pleasant MHP, LLC DE0000008	117	0	0	0	0 ppbbelow the action level
Carpenters Row DE0000399	60	0	0	0	7 ppbbelow the action level
Meridian Crossing Apartments DE0020149	220	0	0	0	not reported

USGS · Monitoring stations

The water, more recently.

Available station readings in New Castle County, Delaware. Each measurement keeps its time, unit and original source.

These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.

Recent observations load when this section comes into view.

How these readings update

We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.

Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.

Your next step

Water testing, reports & local help.

Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.

Official national directories

Water testing

Find your state’s private-well program

EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-05

Water testing

Find a certified drinking-water laboratory

Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-11

Public records

Find your utility’s Consumer Confidence Report

EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-09-09

Public records

Explore USGS water observations

Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.

U.S. Geological Survey
Source reviewed 2026-09-15

A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.

Understand water testing and laboratory reports

Resource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction

Explore your area

Local coverage in New Castle County

29ZIP areas in this overview

Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.

Towns and communities

Arden
Bear
Brookside
Claymont
Delaware City
Glasgow
Greenville
Hockessin
Middletown
New Castle
Newark
Newport
Odessa
Pike Creek
Port Penn
St. Georges
Townsend
Wilmington

Explore water-system records Find water-testing resources

View ZIP areas and understand coverage

19701Bear
19702Glasgow
19703Claymont
19706Delaware City
19707Hockessin
19709Middletown
19710
19711Newark
19713Brookside
19716Newark
19717Newark
19720New Castle
19730Odessa
19731Port Penn
19732
19733St. Georges
19734Townsend
19735
19736Hockessin
19801Wilmington
19802Wilmington
19803Wilmington
19804Newport
19805Wilmington
19806Wilmington
19807Greenville
19808Pike Creek
19809Wilmington
19810Arden

These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.

Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.

Beyond this county page

Keep reading. Compare nearby.

PFASChoosing a PFAS filterPFAS was found in 5 of the 8 systems EPA surveyed here. See how to check a filter’s certified PFAS reduction.LeadChoosing a lead filter3 systems here have reached the lead action level. See how to check a filter’s lead-reduction certification.Your utilityFind your annual water reportConfirm the supplier on your bill, then read its Consumer Confidence Report for local results.

Counties near New Castle County

All Delaware counties

Sources and scope

EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.

Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.

Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.