What was found in Middletown'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 |
|---|---|---|---|
| Fluoride | 910 µg/L 23% of the EPA limit 4000 µg/L Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2019 | 6/10 | SYR4 |
| Copper | 297.8 µg/L 23% of the EPA limit 1300 µg/L Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2018
Highest in the city: 648.45 µg/L — NORTH WEST PUMP DISTRICT · 4,149 people · 2019 | 6/10 | SYR4 |
| Barium | 104.75 µg/L 5.2% of the EPA limit 2000 µg/L Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2016
Highest in the city: 186.2 µg/L — MT PLEASANT MHP, LLC · 117 people · 2012 | 6/10 | SYR4 |
| Lead | 3.04 µg/L 20% of the EPA limit 15 µg/L Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2018
Highest in the city: 39.86 µg/L — SUMMIT POND PUMP DISTRICT · 177 people · 2017 | 5/10 | SYR4 |
| TTHM | 24.35 µg/L 30% of the EPA limit 80 µg/L Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2019 | 5/10 | SYR4 |
| Chloroform | 20.4 µg/L No EPA limit set Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2019 | 5/10 | SYR4 |
| Total Haloacetic Acids (HAA5) | 8.724 µg/L 15% of the EPA limit 60 µg/L Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2019 | 5/10 | SYR4 |
| Dichloroacetic Acid | 6.073 µg/L No EPA limit set Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2019 | 5/10 | SYR4 |
| Xylenes, Total | 4.84 µg/L 0% of the EPA limit 10000 µg/L Highest in the city: SUMMIT POND PUMP DISTRICT · 177 people · 2019 | 1/10 | SYR4 |
| Chromium | 0.6950 µg/L 0.7% of the EPA limit 100 µg/L Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2016
Highest in the city: 4.7 µg/L — SOUTH EAST PUMP DISTRICT · 936 people · 2013 | 5/10 | SYR4 |
| Dibromochloromethane | 4.498 µg/L No EPA limit set Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2019 | 5/10 | SYR4 |
| Bromodichloromethane | 2.523 µg/L No EPA limit set Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2019
Highest in the city: 3.765 µg/L — PONDS OF ODESSA (AWC) · 216 people · 2017 | 5/10 | SYR4 |
| Trichloroacetic Acid | 3.0385 µg/L No EPA limit set Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2019 | 2/10 | SYR4 |
| Combined Radium (-226 And -228) | 1.70585 pCi/L 34% of the EPA limit 5 pCi/L Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2018
Highest in the city: 2.773 pCi/L — SUMMIT POND PUMP DISTRICT · 177 people · 2016 | 6/10 | SYR4 |
| Monochloroacetic Acid | 2.632 µg/L No EPA limit set Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2019 | 1/10 | SYR4 |
| Dibromoacetic Acid | 2.59 µg/L No EPA limit set Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2019 | 1/10 | SYR4 |
| Arsenic | 2.2 µg/L 22% of the EPA limit 10 µg/L Highest in the city: PONDS OF ODESSA (AWC) · 216 people · 2019 | 1/10 | SYR4 |
| Mercury | 1.7 µg/L 85% of the EPA limit 2 µg/L Highest in the city: SUMMIT POND PUMP DISTRICT · 177 people · 2017 | 1/10 | SYR4 |
| Bromoform | 1.632 µg/L No EPA limit set Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2019 | 1/10 | SYR4 |
| Ethylbenzene | 0.8270 µg/L 0.1% of the EPA limit 700 µg/L Highest in the city: SUMMIT POND PUMP DISTRICT · 177 people · 2019 | 1/10 | SYR4 |
| Toluene | 0.5000 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the city: PONDS OF ODESSA (AWC) · 216 people · 2019 | 1/10 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: MIDDLETOWN WATER DEPARTMENT · 17,700 people · 2024
Highest in the city: 0.0109 mg/L — VILLAGEBROOK · 847 people · 2025 | 10/10 | 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 Middletown
| Supplier | Population served |
|---|---|
| MIDDLETOWN WATER DEPARTMENT | 17,700 |
| NORTH WEST PUMP DISTRICT | 4,149 |
| WILLOW GROVE MILL | 3,090 |
| PARKSIDE | 1,467 |
| SOUTH EAST PUMP DISTRICT | 936 |
| DOVE RUN | 909 |
| VILLAGEBROOK | 847 |
| PONDS OF ODESSA (AWC) | 216 |
| SUMMIT POND PUMP DISTRICT | 177 |
| MT PLEASANT MHP, LLC | 117 |
Frequently asked questions about Middletown tap water
Is Middletown tap water safe to drink?
EPA testing detected 22 contaminants in the water serving Middletown. 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 Middletown?
10 public water suppliers report drinking-water monitoring for Middletown, Delaware to the EPA. Each is listed above with its population served.
What contaminants are in Middletown's water?
The contaminants EPA monitoring detected in Middletown include Fluoride, Copper, Barium, Lead, TTHM. 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.