01The verdict: is Slaughter Beach water safe?
Based on EPA testing data, Slaughter Beach's tap water is generally safe to drink. The water system earned a grade of A+ (96.9/100), meeting federal drinking water standards across key contaminant categories. The city's 1 water system serves approximately 846 residents using groundwater (wells).
Nothing over a legal limit
Every contaminant measured in Slaughter Beach's water is within its EPA limit, and no violations are unresolved.
See the testing ↓Lead is well under the limit
90th-percentile lead is 1.0 ppb — beneath the 15 ppb federal action level and under the 5 ppb watch threshold.
See the trend ↓A flood-prone service area
9 federal disaster declarations on record. After severe weather, watch for boil-water advisories.
See the risk factors ↓Slaughter Beach's drinking water received a grade of A+ (96.9 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 846 residents using groundwater.
Lead levels were measured at 1.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program. The system has 1 violation on record, including 1 health-based violation. All violations have been resolved.
Slaughter Beach ranks #2 out of 40 cities in Delaware for water quality, placing it one of the best in the state. Slaughter Beach relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff. As a small community water system, Slaughter Beach may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
02What's in Slaughter Beach's water
Every contaminant flagged in Slaughter Beach, on one shared scale: distance to its own legal limit. The red line is the limit — anything past it is out of compliance, and the closer a bar gets, the less headroom the system has.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 1.0 | 15 | ppb | Inorganic | Safe |
Cities ranked by 90th-percentile lead PF PFAS in Delaware
Cities ranked by compounds detected Cu Copper in Delaware
Cities ranked by 90th-percentile copper
03Slaughter Beach's ten-year track record
Each box is one year. A green check means no EPA violations; a numbered badge counts that year's violations — red if any were health-based, amber if they were monitoring or paperwork issues. The system has 1 violation on record, including 1 health-based violation. All violations have been resolved.
All ten of the last ten years were clean — no EPA violations recorded for Slaughter Beach.
▼ Down 0.25 ppb since 2012. Latest reading: 1 ppb (2023) — 7% of the action level. Sampled at higher-risk homes (90th percentile).
04Where Slaughter Beach's water comes from
Slaughter Beach's drinking water is drawn from underground aquifers through wells.
Groundwater
Underground aquifers reached by wells — naturally filtered, but can carry minerals like arsenic and nitrate.
Local treatment
Groundwater generally needs less treatment — typically disinfection and, where needed, mineral removal.
1 system
1 water system, operated under private ownership.
846 people
Residents served across Slaughter Beach's service area.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals. Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds. The system is operated by private ownership and serves approximately 846 people through 1 water system.
| System name | PWSID | Population | Source |
|---|---|---|---|
| SLAUGHTER BEACH PWS | DE0002618 | 846 | Groundwater |
Water bodies near Slaughter Beach
These water bodies shape the regional watershed and can indirectly affect groundwater quality.
05Pressure on Slaughter Beach's watershed
Outside forces that shape what reaches the treatment plant. None of these is a verdict on the tap by itself — but each adds pressure worth knowing about.
Industrial discharge
3 facilities within 10 miles reported 0 lb released to surface water in the latest EPA Toxics Release Inventory. Proximity doesn't equal tap contamination — treatment and hydrology decide — but it's pressure on the watershed.
Flood & storm history
9 federal disaster declarations on record for New Castle County. Flooding and severe storms can overwhelm treatment plants, cause sewage overflows, and push runoff into supplies.
Drought
Sussex County is in D3 (extreme drought) per the U.S. Drought Monitor (week of Jul 2026). Drought can raise disinfection-byproduct levels and taste/odor issues as utilities draw from lower reservoirs.
06How Slaughter Beach compares
Scores for nearby Delaware cities on one line, with the average marked.
dashed line = Delaware average (75/100)
Slaughter Beach scores 96.9/100 — above the Delaware average of 75/100. It outscores 10 of 10 nearby cities. Full Delaware rankings →
80.5 / 100BWilmington, DE
79.5 / 100BMillville, DE
76.4 / 100CNewark, DE
56.5 / 100BDover, DE
75.3 / 100CDewey Beach, DE
66.8 / 100
Compare all cities in the county — grades, violations, and contaminant data side by side.→
07What to do at home
Steps matched to what testing actually found in Slaughter Beach's water — not generic advice.
A basic carbon filter still helps
Slaughter Beach's water meets federal standards, but a simple carbon filter improves taste and adds a margin of safety against short-term issues.
Compare tested filters →Read your utility's annual report
Every utility must publish a yearly Consumer Confidence Report with its own testing results. It pairs well with the independent data on this page.
How to read a CCR →Watch for Slaughter Beach alerts
This area has a history of flood declarations — after severe weather, watch for boil-water advisories from the utility, and check the live alerts on this page.
All water alerts →Frequently asked questions
Is Slaughter Beach, DE tap water safe to drink?
Slaughter Beach's water quality earned a grade of A+ (96.9/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #2 out of 40 cities tested in Delaware.
What contaminants are in Slaughter Beach's water?
Lead was measured at 1.0 ppb (90th percentile). 1 violation is on record.
How is Slaughter Beach's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Slaughter Beach?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Slaughter Beach's water come from?
Slaughter Beach's water is sourced from Groundwater. The city has 1 water system serving approximately 846 residents.
What health violations has Slaughter Beach's water system had?
Slaughter Beach has 1 health-based violation on record. The most recent violation was recorded in December 2012. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. All health violations have been resolved.
Is Slaughter Beach's groundwater at risk of contamination?
Slaughter Beach uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 1 violation on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Slaughter Beach's water compare to other cities?
Slaughter Beach ranks #2 out of 40 cities in Delaware (better than 95% of state cities) and #130 out of 15382 cities nationally (99th percentile). The grade of A+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Slaughter Beach's small water system affect quality?
Slaughter Beach's system serves approximately 846 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 1 violation on record.