Long Neck, DE Water Quality Guide
Mapped public-water systems, PWS IDs, CCR availability, and private-well context for Long Neck, Delaware.
About Long Neck, DE Water
About Long Neck, DE Water
Long Neck is a named Delaware community associated with Sussex County. It may include public-water service, private wells, subdivisions, or noncommunity systems. The anchor location used for this page is a discovery aid, not an address-level boundary. The associated municipality or nearby anchor is Millsboro / Lewes / Rehoboth Beach.
Local Delaware water context for Long Neck
Sussex's coastal and inland groundwater systems include Columbia, Columbia-Pocomoke, Pocomoke, Manokin, and related aquifers monitored by DNREC. Coastal properties from Lewes through Fenwick Island may need chloride/salinity attention, while agricultural and shallow-well properties should discuss nitrate/nitrite testing.
If the property is on public water, confirm the PWSID and CCR. If it is on a private well, start with the Delaware DPH bacteria/chemistry kits and add chloride/salinity or nitrate based on the site.
| Question | Useful local starting point |
|---|---|
| Public water | Confirm the exact PWS ID in Delaware Drinking Water Watch or on the current bill. |
| Service territory | Review the official Delaware PSC CPCN water-territory GIS layer as a utility-territory discovery tool; it is not an address-level guarantee. |
| Private well | Review the DNREC well permit/record and water-use/water-level data, then use a certified laboratory or Delaware DPH testing resources. |
| UD/DGS research context | For aquifer, groundwater, and regional research context, review DGS/UD saltwater-intrusion research and the DGS groundwater-quality dataset. These sources are not address-level tap-water results. |
| Data-source guide | Use the Delaware water data-source guide to interpret PWS, CCR, well, territory, and lab records. |
| Before treatment | Match the system to the actual CCR or test result; a municipality is not one water system. |
Water system providers for Long Neck, DE
Provider rows are based on EPA public-water service-area relationships and named-system records. Some boundaries are modeled estimates. Confirm your exact PWS ID through Delaware Drinking Water Watch, your utility, or your current bill.
| PWS ID | System | Provider | Contact | Mapping status | Official links |
|---|---|---|---|---|---|
DE0000625 | LONG NECK WATER COMPANY | Long Neck Water Company | 1-302-947-9600 | Named-system page anchored to listed municipality | Provider website Drinking Water Watch |
System details and report coverage
| System / PWS ID | System type | Sample year(s) | Report year(s) | Coverage status | Official record |
|---|---|---|---|---|---|
DE0000625DE0000625 | Public-water system | 2025, 2024, 2022 | 2025, 2024 | Extracted contaminant rows available | Official record/report source |
Reported contaminant data and report status for Long Neck, DE
| PWS ID | System | Data point | Reported level/status | Limit or context | Comparison | Sample year | Report year | Source PDF page | Source |
|---|---|---|---|---|---|---|---|---|---|
DE0000625 | DE0000625 | Nitrate | 3.5307 ppm | 10 | Below | 2025 | 2025 | Source | |
DE0000625 | DE0000625 | Chlorine residual, free | 1.17 ppm | 4 MRDL | Below | 2025 | 2025 | Source | |
DE0000625 | DE0000625 | Total trihalomethanes | 3.36 ppb | 80 | Below | 2025 | 2025 | Source | |
DE0000625 | DE0000625 | Chloride | 20.94 ppm | 250 secondary | Below | 2025 | 2025 | Source | |
DE0000625 | DE0000625 | Total hardness | 12.01 ppm | Secondary; no MCL | Reported | 2025 | 2025 | Source | |
DE0000625 | DE0000625 | Alkalinity, Total | 59.16 MG/L | Secondary standard; see Delaware DPH table | Reported | 2024 | 2024 | 223 | Source |
DE0000625 | DE0000625 | Chloride | 23.1329 MG/L | Secondary standard; see Delaware DPH table | Reported | 2024 | 2024 | 223 | Source |
DE0000625 | DE0000625 | Iron | 0 MG/L | Secondary standard; see Delaware DPH table | Reported | 2024 | 2024 | 223 | Source |
DE0000625 | DE0000625 | Sodium | 38.2574 MG/L | Secondary standard; see Delaware DPH table | Reported | 2024 | 2024 | 223 | Source |
DE0000625 | DE0000625 | Sulfate | 3.6589 MG/L | Secondary standard; see Delaware DPH table | Reported | 2024 | 2024 | 223 | Source |
DE0000625 | DE0000625 | Manganese | 0 MG/L | Secondary standard; see Delaware DPH table | Reported | 2024 | 2024 | 237 | Source |
DE0000625 | DE0000625 | Methyl Tert-Butyl Ether | 0 UG/L | Secondary standard; see Delaware DPH table | Reported | 2022 | 2024 | 237 | Source |
DE0000625 | DE0000625 | Nickel | 0 MG/L | Secondary standard; see Delaware DPH table | Reported | 2024 | 2024 | 238 | Source |
DE0000625 | DE0000625 | Chlorine residual, free | 1.17 ppm | 4 MRDL | Below | 2025 | 2025 | 3 | Source |
DE0000625 | DE0000625 | Total trihalomethanes | 3.36 ppb | 80 | Below | 2025 | 2025 | 3 | Source |
DE0000625 | DE0000625 | Barium | 0.0881 ppm | 2 | Below | 2025 | 2025 | 3 | Source |
DE0000625 | DE0000625 | Nitrate as nitrogen | 3.5307 ppm | 10 | Below | 2025 | 2025 | 3 | Source |
DE0000625 | DE0000625 | Chloride | 20.94 ppm average | 250 secondary | Reported | 2025 | 2025 | 3 | Source |
DE0000625 | DE0000625 | Total hardness | 12.01 ppm average | Secondary; no MCL | Reported | 2025 | 2025 | 3 | Source |
All available reports and official records
How to Read This Info for Long Neck, DE
Use the PWS ID to open the matching Delaware Drinking Water Watch record and current Consumer Confidence Report. The named-community relationship does not mean every nearby address uses that system.
Rows labeled “Local report status” identify report coverage and are not contaminant measurements. Private wells are not covered by public-water CCRs.
Frequently asked questions
Who is my water provider in Long Neck?
Review the mapped PWS/provider table above, then confirm the exact system through Drinking Water Watch or your bill.
Are contaminant levels available for Long Neck?
Where a current CCR row has been parsed it is shown above; otherwise the page shows the mapped report status and links to the live official record.
Data may be missing, modeled, dated, or limited. Do not interpret this page as an address-level service determination or a complete public-water inventory.
Last reviewed: July 21, 2026