What was found in Doylestown'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 | 5200 µg/L 52% of the EPA limit 10000 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2019 | 2/3 | SYR4 |
| Copper | 1346 µg/L 104% of the EPA limit, at the 95th percentile of samples — 1300 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2019 | 3/3 | SYR4 |
| Barium | 718.4 µg/L 36% of the EPA limit 2000 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2018 | 2/3 | SYR4 |
| Fluoride | 224 µg/L 5.6% of the EPA limit 4000 µg/L Highest in the city: DTMA MAIN SYSTEM · 8,655 people · 2018 | 1/3 | SYR4 |
| TTHM | 9.204 µg/L 12% of the EPA limit 80 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2019
Highest in the city: 33.92 µg/L — DTMA CEDAR CREST FARMS · 300 people · 2019 | 3/3 | SYR4 |
| Chloroform | 1.5 µg/L No EPA limit set Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2019
Highest in the city: 25.215 µg/L — DTMA CEDAR CREST FARMS · 300 people · 2019 | 3/3 | SYR4 |
| Lead | 2.84 µg/L 19% of the EPA limit 15 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2019
Highest in the city: 23 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2019 | 2/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 3 µg/L 5% of the EPA limit 60 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2019
Highest in the city: 16.595 µg/L — DTMA CEDAR CREST FARMS · 300 people · 2019 | 3/3 | SYR4 |
| Lithium | 15.1 µg/L No EPA limit set Highest in the city: DTMA MAIN SYSTEM · 8,655 people · 2025 | 1/3 | UCMR-5 |
| Dichloroacetic Acid | 7.7 µg/L No EPA limit set Highest in the city: DTMA CEDAR CREST FARMS · 300 people · 2019 | 2/3 | SYR4 |
| Arsenic | 2.25 µg/L 23% of the EPA limit 10 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2018
Highest in the city: 7.025 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2018 | 2/3 | SYR4 |
| Bromodichloromethane | 2.29 µg/L No EPA limit set Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2019
Highest in the city: 7 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2019 | 3/3 | SYR4 |
| Selenium | 3.24 µg/L 6.5% of the EPA limit 50 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2018
Highest in the city: 6.9 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2018 | 2/3 | SYR4 |
| Combined Uranium | 4.00005 µg/L 13% of the EPA limit 30 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2017
Highest in the city: 6.16473 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2017 | 2/3 | SYR4 |
| Bromoform | 0.6900 µg/L No EPA limit set Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2019
Highest in the city: 5.994 µg/L — DTMA CEDAR CREST FARMS · 300 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 1.766 µg/L No EPA limit set Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2019
Highest in the city: 5.59 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2019 | 3/3 | SYR4 |
| Chromium | 4.7 µg/L 4.7% of the EPA limit 100 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2018
Highest in the city: 5.55 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2018 | 2/3 | SYR4 |
| 1,1-Dichloroethylene | 4.18 µg/L 60% of the EPA limit 7 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2019 | 2/3 | SYR4 |
| Xylenes, Total | 4.155 µg/L 0% of the EPA limit 10000 µg/L Highest in the city: DTMA MAIN SYSTEM · 8,655 people · 2019 | 1/3 | SYR4 |
| Trichloroacetic Acid | 3.7 µg/L No EPA limit set Highest in the city: DTMA CEDAR CREST FARMS · 300 people · 2019 | 2/3 | SYR4 |
| Tetrachloroethylene | 1.1 µg/L 22% of the EPA limit 5 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2019
Highest in the city: 3.025 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2019 | 2/3 | SYR4 |
| Carbon Tetrachloride | 1.88 µg/L 38% of the EPA limit 5 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2019 | 1/3 | SYR4 |
| Dibromoacetic Acid | 1.585 µg/L No EPA limit set Highest in the city: DTMA MAIN SYSTEM · 8,655 people · 2019 | 1/3 | SYR4 |
| Ethylbenzene | 1.09 µg/L 0.2% of the EPA limit 700 µg/L Highest in the city: DTMA MAIN SYSTEM · 8,655 people · 2019 | 1/3 | SYR4 |
| 1,1,1-Trichloroethane | 0.8620 µg/L 0.4% of the EPA limit 200 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2019 | 1/3 | SYR4 |
| Styrene | 0.7800 µg/L 0.8% of the EPA limit 100 µg/L Highest in the city: DTMA MAIN SYSTEM · 8,655 people · 2019 | 1/3 | SYR4 |
| Trichloroethylene | 0.6860 µg/L 14% of the EPA limit 5 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2019 | 1/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.6000 µg/L 10% of the EPA limit 6 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2019 | 1/3 | SYR4 |
| cis-1,2-Dichloroethylene | 0.1500 µg/L 0.2% of the EPA limit 70 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2019 | 1/3 | SYR4 |
| Beryllium, Total | 0.0700 µg/L 1.8% of the EPA limit 4 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2018 | 1/3 | SYR4 |
| Mercury | 0.0320 µg/L 1.6% of the EPA limit 2 µg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2018 | 1/3 | SYR4 |
| PFOA | 0.0146 µg/L No EPA limit set Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2025 | 2/3 | UCMR-5 |
| PFOS | 0.0113 µg/L No EPA limit set Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2025
Highest in the city: 0.0134 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2025 | 2/3 | UCMR-5 |
| Pfpea | 0.0085 µg/L No EPA limit set Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2025
Highest in the city: 0.0104 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2025 | 2/3 | UCMR-5 |
| PFBS | 0.0075 µg/L No EPA limit set Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2025
Highest in the city: 0.0098 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2025 | 2/3 | UCMR-5 |
| Pfhxa | 0.0086 µg/L No EPA limit set Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2025 | 2/3 | UCMR-5 |
| PFNA | 0.0052 µg/L No EPA limit set Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2025
Highest in the city: 0.0074 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2025 | 2/3 | UCMR-5 |
| Pfhpa | 0.0052 µg/L No EPA limit set Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2025
Highest in the city: 0.0072 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2025 | 2/3 | UCMR-5 |
| PFHXS | 0.0064 µg/L No EPA limit set Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2025 | 1/3 | UCMR-5 |
| Pfba | 0.0057 µg/L No EPA limit set Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2025
Highest in the city: 0.0063 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2025 | 2/3 | UCMR-5 |
| Pfuna | 0.0030 µg/L No EPA limit set Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2025 | 1/3 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: DOYLESTOWN BORO WATER DEPT · 8,700 people · 2025 | 2/3 | 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 Doylestown
| Supplier | Population served |
|---|---|
| DOYLESTOWN BORO WATER DEPT | 8,700 |
| DTMA MAIN SYSTEM | 8,655 |
| DTMA CEDAR CREST FARMS | 300 |
Frequently asked questions about Doylestown tap water
Is Doylestown tap water safe to drink?
EPA testing detected 42 contaminants in the water serving Doylestown. 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 Doylestown?
3 public water suppliers report drinking-water monitoring for Doylestown, Pennsylvania to the EPA. Each is listed above with its population served.
What contaminants are in Doylestown's water?
The contaminants EPA monitoring detected in Doylestown include Nitrate, Copper, Barium, Fluoride, 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.