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Review government records associated with New Castle, Delaware.
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Check your water bill for your utility name and confirm the reporting year. See EPA’s guide to finding your annual water quality report.
Public water-system records for New Castle, DE from EPA SDWIS.
Wilmington Water Department
PFAS above an official threshold detected in available EPA records.
Reviewed: active/open records as of Q1 2026
City-area ZIP code · Serves 107,976 people
Newark Water Department
PFAS above an official threshold detected in available EPA records.
Reviewed: active/open records as of Q1 2026
City-area ZIP code · Serves 40,000 people
Municipal Services Commission
PFAS detected below the official threshold used by this report.
Reviewed: active/open records as of Q1 2026
City listed in EPA records · Serves 5,549 people
Data from EPA SDWIS
PFAS screening separates EPA UCMR5 drinking-water monitoring from nearby DoD PFAS investigation-site records; EPA samples shown are from Feb 2023 to Jan 2024.
Drinking Water PFAS Monitoring
EPA UCMR5 samples public water systems. These results are separate from nearby PFAS cleanup or investigation-site records.
14 PFAS sample results above EPA limits
Sample period: Feb 2023 to Jan 2024
UCMR5 results are sampled by public water system, not every household. Confirm your water provider before treating these as tap-water results for a specific address.
| Chemical | Concentration (µg/L) | EPA Limit (µg/L) | Sample date | Over Limit |
|---|---|---|---|---|
| PFOA | 0.0099 | 0.0040 | 2024-01-31 | Yes |
| PFOA | 0.0091 | 0.0040 | 2023-11-07 | Yes |
| PFOA | 0.0085 | 0.0040 | 2023-11-07 | Yes |
| PFOA | 0.0068 | 0.0040 | 2023-08-09 | Yes |
| PFOA | 0.0067 | 0.0040 | 2023-08-09 | Yes |
| PFOA | 0.0052 | 0.0040 | 2023-02-08 | Yes |
| PFOA | 0.0052 | 0.0040 | 2023-02-08 | Yes |
| PFOA | 0.0050 | 0.0040 | 2024-01-31 | Yes |
| PFOA | 0.0253 | 0.0040 | 2023-07-07 | Yes |
| PFOA | 0.0200 | 0.0040 | 2023-10-27 | Yes |
| PFOS | 0.0075 | 0.0040 | 2023-07-07 | Yes |
| PFOS | 0.0073 | 0.0040 | 2023-10-27 | Yes |
| PFOA | 0.0048 | 0.0040 | 2023-09-14 | Yes |
| PFOA | 0.0041 | 0.0040 | 2023-03-14 | Yes |
PFAS detections below EPA limits.
Nearby PFAS Investigation Sites
DoD records are nearby site investigations, not New Castle drinking-water detections. Record names come from the source database and can be broad.
No DoD PFAS investigation records shown for this report.
EPA ATTAINS records identify assessed water bodies that do not meet water-quality standards for designated uses.
Broad Duke Canal-Delaware River
Reported: Nov 2026
Health-relevant causes: Dioxins, Pesticides, Polychlorinated Biphenyls (pcbs)
Affected uses: Fishconsumption
Data from EPA ATTAINS
NPDES permits regulate pollutant discharges into U.S. waterways. Facilities must report compliance quarterly.
No NPDES-permitted facility records with current violation flags surfaced for this city report.
Reviewed: active/open records as of Q4 2025
Data from EPA ECHO
To investigate water contamination, check the sampling locations, dates and results below. For tap water records, see Drinking water quality above.
Reviewed: source records as of 2026
Review historical EPA air pollution records, including monitoring and facility emissions where available. For current conditions, check local air quality on AirNow.
New Castle County
Assessment year: 2020
According to EPA, a cancer risk of 40-in-1-million means that for every 1 million people continuously exposed to these air toxics over a 70-year lifetime, an estimated 40 may develop cancer from that exposure. This is in addition to cancer risk from all other causes.
Top modeled source groups
Data from EPA AirToxScreen
EPA designates an area as nonattainment when air quality does not meet federal health-based standards (NAAQS) for a specific pollutant.
New Castle County, DE: Ozone
NonattainmentSerious8-Hour Ozone (2015 Standard)
Health effects (EPA): Respiratory inflammation, aggravation of asthma, reduced lung function (EPA)
Maintenance areas
Previously nonattainment; currently meeting the standard and monitored under an EPA maintenance plan.
Philadelphia-Wilmington
PM2.5 · PM-2.5 (1997 Standard)
Classification: Moderate
Original designation: Apr 2005
Current design value: 10.6 µg/m³ (2023-2025)
Historical designations under the revoked 1997 ozone standard
These records describe historical designations. EPA revoked the 1997 ozone standard on April 6, 2015.
Philadelphia-Wilmington-Atlantic City Area
Historical standard: 0.08 ppm (8-hour)
Historical designation: Nonattainment (NAAQS revoked) · Subpart 2/Moderate
Original designation: Jun 2004
Open data source: EPA final revocation ruleContinuing requirements have not been verified for this area.
Data from EPA Green Book
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
Annual mean: 0.042 Parts per million
EPA primary exceedance count: 2 (Ozone 8-hour 2015)
Observation year: 2025
Bellefonte River Road Park
Annual mean: 8.2 Micrograms/cubic meter (LC)
Observation year: 2025
Bellevue State Park, Field in Se Portion of Park
Annual mean: 0.5 Parts per billion
Observation year: 2025
Data from EPA AQS
Facilities regulated under the Clean Air Act. CAA HPV flags indicate serious noncompliance such as exceeding emission limits.
Air Violations
Last inspected: Dec 2025
Data from EPA ECHO
TRI releases are self-reported annual totals (calendar year 2024). Hover fugitive or stack for definitions.
Croda Inc
Reported: 2024
EPA records for current, proposed and formerly listed Superfund sites on the National Priorities List (NPL).
Open data source: Search EPA ECHOEPA FRS Registry ID 110071100731
Reported: Jun 2023
EPA FRS Registry ID 110009273909
Reported: Nov 2021
EPA FRS Registry ID 110009328628
Reported: Nov 2021
Brownfield sites are properties where redevelopment is complicated by the presence of hazardous substances.
Open data source: Search EPA ECHO1 site with active cleanup or investigation status
427 West 7th Street, New Castle
Reported: Feb 2026
Facilities with hazardous-waste handler records under RCRA in the reviewed 5-mile city-center search area. Active handler status is separate from air, water, or other ECHO compliance violations, which are shown in their own sections.
Active RCRA handler records in the reviewed city search area
No release reports shown in this group.
Reviewed: active/open records as of 2018
Data from EPA UST Finder
Reviewed: reporting year 2024
No MSHA mine or extraction site records shown for this report.
New Castle County, DE
EPA Radon Zone Map (June 2024 release)
New Castle County is EPA Radon Zone 2 (moderate potential). EPA defines Zone 2 counties as having predicted average indoor screening levels between 2 pCi/L and 4 pCi/L.
Radon levels can vary from home to home, so EPA recommends testing the property to know its indoor level.
FEMA flood zones describe mapped flood hazards. Look up a specific address with FEMA.
Minimal flood hazard — outside the 1% and 0.2% annual chance floodplains.
Results use an earlier stored RMP inventory. Current EPA ECHO location coverage is unverified.
EPA ECHO lists facilities linked to the Risk Management Program. Results include facilities with locations that can be matched. Records may be historical. Current operations, chemical inventories, and recent accident history are unverified.
PHMSA tracks incidents involving natural gas and hazardous liquid pipelines. Incidents include leaks, ruptures, and explosions.
No records dated within the last 5 years surfaced for this city report.
Reviewed: last 5 years
Data from PHMSA
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
New Castle County, DelawarePop. 575,494
County Health Rankings edition: 2024
Premature Death
Poor or Fair Health
Poor Physical Health Days
Poor Mental Health Days
Adult Smoking
Adult Obesity
Air Pollution - Particulate Matter
Drinking water violation indicator
Diabetes Prevalence
Life Expectancy
| Indicator | County | State | National |
|---|---|---|---|
| Premature Death | 8,386 | 8,590 | 7,972 |
| Poor or Fair Health | 13.4% | 14.0% | 14.2% |
| Poor Physical Health Days | 3.1 | 3.3 | 3.3 |
| Poor Mental Health Days | 4.7 | 4.4 | 4.8 |
| Adult Smoking | 13.8% | 14.3% | 15.0% |
| Adult Obesity | 34.6% | 33.8% | 34.0% |
| Air Pollution - Particulate Matter | 8.6 | 7.6 | 7.3 |
| Drinking water violation indicator | No | N/A | N/A |
| Diabetes Prevalence | 10.1% | 9.9% | 9.6% |
| Life Expectancy | 77.4 | 77.4 | 77.6 |
EPA testing found PFAS in water samples from Wilmington Water Department. Results dated Feb 8, 2023 to Jan 31, 2024 include PFPeA at 0.0038 to 0.0322 micrograms per liter and PFHxA at 0.0041 to 0.0211 micrograms per liter.
EPA testing found PFAS in water samples from Newark Water Department. Results dated Mar 14, 2023 to Dec 6, 2023 include PFOA at 0.004 to 0.0253 micrograms per liter and PFHxA at 0.0031 to 0.0132 micrograms per liter.
EPA testing found PFAS in water samples from Municipal Services Commission. Results dated Mar 8, 2023 include PFBA at 0.1472 micrograms per liter and PFPeA at 0.1229 micrograms per liter.
Check with the utility that serves your address for its testing results.
EPA drinking water records on this page list 1 violation for Wilmington Water Department.
The EPA drinking water records available here list no violations for Newark Water Department.
The EPA drinking water records available here list no violations for Municipal Services Commission.
Check your water bill to identify the utility serving your address. Ask that utility about current drinking water advisories.
Nearby EPA monitoring stations provide annual air quality measurements for New Castle.
The monitoring station at Bcsp recorded an annual average of 0.042 Parts per million for ozone in 2025.
The monitoring station at Bellefonte River Road Park recorded an annual average of 8.2 Micrograms/cubic meter (LC) for fine particles (PM2.5) in 2025.
The monitoring station at Bellevue State Park, Field in Se Portion of Park recorded an annual average of 0.5 Parts per billion for sulfur dioxide in 2025.
Download 2025 EPA annual monitor dataCurrent air quality on AirNow
The radon data for New Castle covers New Castle County. EPA places this area in Zone 2, with a predicted average indoor radon screening level of 2 to 4 picocuries per liter.
This city report shows 3 Superfund sites: East Basin Road Groundwater; Army Creek Landfill/Llangollen Landfill; Delaware Sand & Gravel Landfill.
This city report shows 1 brownfield site: 427 West 7th Street.
View on EPA ECHOView on EPA ECHOView on EPA ECHOView on EPA ECHO
The county data for New Castle reports a life expectancy of 77.4 years in New Castle County, Delaware.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for New Castle reports 8,386 years of life lost to deaths before age 75 per 100,000 residents in New Castle County, Delaware. This measure adds up the years lost to early deaths and adjusts for differences in population age.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for New Castle lists fine-particle pollution (PM2.5) at 8.6 micrograms per cubic meter in New Castle County, Delaware.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
Federal pipeline records list an incident involving South Jersey Gas Co near New Castle on Sep 15, 2015. The reported release was natural gas.