What was found in Smyrna's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 7708.18 µg/L 77% of the EPA limit 10000 µg/L Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019 | 5/7 | SYR4 |
| Nitrate | 7704.09 µg/L 77% of the EPA limit 10000 µg/L Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019 | 5/7 | SYR4 |
| Fluoride | 322 µg/L 8.1% of the EPA limit 4000 µg/L Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019
Highest in the city: 1539.86 µg/L — SMYRNA WATER DEPARTMENT · 11,813 people · 2019 | 5/7 | SYR4 |
| Copper | 73.435 µg/L 5.6% of the EPA limit 1300 µg/L Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019
Highest in the city: 1265 µg/L — EVERGREEN POST ACUTE · 256 people · 2019 | 7/7 | SYR4 |
| Barium | 110.3 µg/L 5.5% of the EPA limit 2000 µg/L Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019
Highest in the city: 148.825 µg/L — EVERGREEN POST ACUTE · 256 people · 2016 | 5/7 | SYR4 |
| Lead | 5.96 µg/L 40% of the EPA limit 15 µg/L Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019
Highest in the city: 71.6 µg/L — EVERGREEN POST ACUTE · 256 people · 2019 | 7/7 | SYR4 |
| Nitrite | 50 µg/L 5% of the EPA limit 1000 µg/L Highest in the city: DELAWARE CORRECTIONAL CENTER · 2,000 people · 2019 | 1/7 | SYR4 |
| TTHM | 27.485 µg/L 34% of the EPA limit 80 µg/L Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019
Highest in the city: 35.276 µg/L — SMYRNA WATER DEPARTMENT · 11,813 people · 2019 | 5/7 | SYR4 |
| Chloroform | 18.5985 µg/L No EPA limit set Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019 | 5/7 | SYR4 |
| Lithium | 16.6 µg/L No EPA limit set Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2025 | 1/7 | UCMR-5 |
| Dibromochloromethane | 3.23 µg/L No EPA limit set Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019
Highest in the city: 9.293 µg/L — SMYRNA WATER DEPARTMENT · 11,813 people · 2019 | 5/7 | SYR4 |
| Bromodichloromethane | 5.15 µg/L No EPA limit set Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019
Highest in the city: 8.88 µg/L — SMYRNA WATER DEPARTMENT · 11,813 people · 2019 | 5/7 | SYR4 |
| Total Haloacetic Acids (HAA5) | 8.7432 µg/L 15% of the EPA limit 60 µg/L Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019 | 5/7 | SYR4 |
| Combined Radium (-226 And -228) | 1.43 pCi/L 29% of the EPA limit 5 pCi/L Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019
Highest in the city: 6.58 pCi/L — EVERGREEN POST ACUTE · 256 people · 2019 | 7/7 | SYR4 |
| Chromium | 6.21 µg/L 6.2% of the EPA limit 100 µg/L Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019 | 5/7 | SYR4 |
| Xylenes, Total | 6.178 µg/L 0.1% of the EPA limit 10000 µg/L Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019 | 2/7 | SYR4 |
| Arsenic | 5.876 µg/L 59% of the EPA limit 10 µg/L Highest in the city: HOLLY HILL ESTATES · 831 people · 2019 | 4/7 | SYR4 |
| Bromoform | 0.9100 µg/L No EPA limit set Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019
Highest in the city: 5.636 µg/L — SMYRNA WATER DEPARTMENT · 11,813 people · 2019 | 3/7 | SYR4 |
| Dichloroacetic Acid | 4.53765 µg/L No EPA limit set Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019 | 5/7 | SYR4 |
| Trichloroacetic Acid | 4.2224 µg/L No EPA limit set Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019 | 5/7 | SYR4 |
| Toxaphene | 2.5 µg/L 83% of the EPA limit 3 µg/L Highest in the city: DELAWARE CORRECTIONAL CENTER · 2,000 people · 2019 | 1/7 | SYR4 |
| Dibromoacetic Acid | 1.114 µg/L No EPA limit set Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019
Highest in the city: 2.4534 µg/L — SMYRNA WATER DEPARTMENT · 11,813 people · 2019 | 3/7 | SYR4 |
| Selenium | 1.55 µg/L 3.1% of the EPA limit 50 µg/L Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019
Highest in the city: 1.56 µg/L — SMYRNA WATER DEPARTMENT · 11,813 people · 2019 | 2/7 | SYR4 |
| Monochloroacetic Acid | 1.3548 µg/L No EPA limit set Highest in the city: SMYRNA WATER DEPARTMENT · 11,813 people · 2019 | 1/7 | SYR4 |
| Cadmium | 0.6000 µg/L 12% of the EPA limit 5 µg/L Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2019
Highest in the city: 1.2 µg/L — HEDGEROW HOLLOW · 147 people · 2019 | 2/7 | SYR4 |
| Chlordane | 1 µg/L 50% of the EPA limit 2 µg/L Highest in the city: DELAWARE CORRECTIONAL CENTER · 2,000 people · 2019 | 2/7 | SYR4 |
| Pentachlorophenol | 0.5600 µg/L 56% of the EPA limit 1 µg/L Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2018 | 1/7 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.2890 µg/L 4.8% of the EPA limit 6 µg/L Highest in the city: SMYRNA WATER DEPARTMENT · 11,813 people · 2019 | 2/7 | SYR4 |
| Lasso | 0.0360 µg/L 1.8% of the EPA limit 2 µg/L Highest in the city: SMYRNA WATER DEPARTMENT · 11,813 people · 2019 | 1/7 | SYR4 |
| Mercury | 0.0338 µg/L 1.7% of the EPA limit 2 µg/L Highest in the city: DELAWARE CORRECTIONAL CENTER · 2,000 people · 2019 | 1/7 | SYR4 |
| Di(2-ethylhexyl) Adipate | 0.0300 µg/L 0% of the EPA limit 400 µg/L Highest in the city: DELAWARE CORRECTIONAL CENTER · 2,000 people · 2019 | 1/7 | SYR4 |
| PFOA | 0.0098 µg/L No EPA limit set Highest in the city: SMYRNA WATER DEPARTMENT · 11,813 people · 2024 | 1/7 | UCMR-5 |
| Heptachlor Epoxide | 0.0095 µg/L 4.8% of the EPA limit 0.2000 µg/L Highest in the city: SMYRNA WATER DEPARTMENT · 11,813 people · 2019 | 1/7 | SYR4 |
| PFBS | 0.0069 µg/L No EPA limit set Highest in the city: SMYRNA WATER DEPARTMENT · 11,813 people · 2024 | 1/7 | UCMR-5 |
| PFOS | 0.0067 µg/L No EPA limit set Highest in the city: SMYRNA WATER DEPARTMENT · 11,813 people · 2024 | 1/7 | UCMR-5 |
| Pfpea | 0.0047 µg/L No EPA limit set Highest in the city: SMYRNA WATER DEPARTMENT · 11,813 people · 2024 | 1/7 | UCMR-5 |
| Pfhxa | 0.0045 µg/L No EPA limit set Highest in the city: SMYRNA WATER DEPARTMENT · 11,813 people · 2024 | 1/7 | UCMR-5 |
| Lead | 0.00062 mg/L 4.1% of the EPA limit 0.0150 mg/L Main supplier: GARRISON LAKE PUMP DISTRICT · 17,148 people · 2026 | 7/7 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Smyrna
| Supplier | Population served |
|---|---|
| GARRISON LAKE PUMP DISTRICT | 17,148 |
| SMYRNA WATER DEPARTMENT | 11,813 |
| DELAWARE CORRECTIONAL CENTER | 2,000 |
| HOLLY HILL ESTATES | 831 |
| EVERGREEN POST ACUTE | 256 |
| HEDGEROW HOLLOW | 147 |
| WOODLAND TRAILER COURT | 41 |
Frequently asked questions about Smyrna tap water
Is Smyrna tap water safe to drink?
EPA testing detected 38 contaminants in the water serving Smyrna. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Smyrna?
7 public water suppliers report drinking-water monitoring for Smyrna, Delaware to the EPA. Each is listed above with its population served.
What contaminants are in Smyrna's water?
The contaminants EPA monitoring detected in Smyrna include Nitrate-Nitrite, Nitrate, Fluoride, Copper, Barium. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.