Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
25
health-based violations
32
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2006-05-01 → 2006-05-31 |
| MCL | Health-based | Resolved | 2006-05-01 → 2006-05-31 |
| MCL | Health-based | Resolved | 2006-05-01 → 2006-05-31 |
| MCL | Health-based | Resolved | 2006-05-01 → 2006-05-31 |
| MCL | Health-based | Resolved | 2001-10-01 → 2001-10-31 |
| MCL | Health-based | Resolved | 2001-10-01 → 2001-10-31 |
| MCL | Health-based | Archived | 2001-09-01 → 2001-09-30 |
| MCL | Health-based | Archived | 2000-12-01 → 2000-12-31 |
| MCL | Health-based | Resolved | 1999-12-01 → 1999-12-31 |
| MCL | Health-based | Resolved | 1999-12-01 → 1999-12-31 |
Other contaminants detected
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 this
system's samples — over 100% is worth reading, but is not by itself a
violation. Where a single sample came in higher than that percentile, it
is noted under the bar. Formal violations are listed separately.
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Fluoride | 1070 µg/L 27% of the EPA limit 4000 µg/L
worst single sample: 1510 µg/L | 814/816 | SYR4 | 2012–2019 |
| Chloroform | 32.235 µg/L No EPA limit set
worst single sample: 44 µg/L | 178/212 | SYR4 | 2012–2019 |
| Nitrate | 5255 µg/L 53% of the EPA limit 10000 µg/L
worst single sample: 7800 µg/L | 150/1628 | SYR4 | 2012–2019 |
| Bromodichloromethane | 9.69 µg/L No EPA limit set
worst single sample: 15 µg/L | 126/212 | SYR4 | 2012–2019 |
| TTHM | 48.35 µg/L 60% of the EPA limit 80 µg/L
worst single sample: 65 µg/L | 116/116 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 6.339 µg/L No EPA limit set
worst single sample: 9.1 µg/L | 115/116 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 14.815 µg/L 25% of the EPA limit 60 µg/L
worst single sample: 20 µg/L | 115/116 | SYR4 | 2012–2019 |
| Dibromochloromethane | 5.325 µg/L No EPA limit set
worst single sample: 22 µg/L | 114/212 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 9.9145 µg/L No EPA limit set
worst single sample: 14.6 µg/L | 110/116 | SYR4 | 2012–2019 |
| Copper | 179.2 µg/L 14% of the EPA limit 1300 µg/L
worst single sample: 286 µg/L | 108/135 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 5190 µg/L 52% of the EPA limit 10000 µg/L
worst single sample: 7800 µg/L | 82/813 | SYR4 | 2012–2019 |
| Lead | 7.7 µg/L 51% of the EPA limit 15 µg/L
worst single sample: 12.4 µg/L | 31/135 | SYR4 | 2012–2019 |
| Lithium | 37.2 µg/L No EPA limit set | 30/32 | UCMR-5 | 2025 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L | 25/25 | LCR | 2026 |
| Combined Radium (-226 And -228) | 2.058 pCi/L 41% of the EPA limit 5 pCi/L
worst single sample: 3.3 pCi/L | 19/19 | SYR4 | 2013–2019 |
| Bromoform | 2.4575 µg/L No EPA limit set
worst single sample: 2.5 µg/L | 18/212 | SYR4 | 2012–2019 |
| Arsenic | 3.783 µg/L 38% of the EPA limit 10 µg/L
worst single sample: 3.79 µg/L | 15/44 | SYR4 | 2012–2019 |
| Chromium | 10 µg/L 10% of the EPA limit 100 µg/L
worst single sample: 11.3 µg/L | 14/44 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 2.4465 µg/L No EPA limit set
worst single sample: 2.61 µg/L | 7/116 | SYR4 | 2012–2019 |
| Nitrite | 200 µg/L 20% of the EPA limit 1000 µg/L | 7/815 | SYR4 | 2012–2019 |
| Barium | 67.709 µg/L 3.4% of the EPA limit 2000 µg/L
worst single sample: 68.5 µg/L | 3/44 | SYR4 | 2012–2019 |
| Xylenes, Total | 3.105 µg/L 0% of the EPA limit 10000 µg/L
worst single sample: 3.18 µg/L | 3/109 | SYR4 | 2012–2019 |
| Selenium | 1.182 µg/L 2.4% of the EPA limit 50 µg/L
worst single sample: 1.19 µg/L | 2/44 | SYR4 | 2012–2019 |
| 1,2-Dichloroethane | 0.7200 µg/L 14% of the EPA limit 5 µg/L | 1/110 | SYR4 | 2012–2019 |
| Bromate | 6 µg/L 60% of the EPA limit 10 µg/L | 1/73 | SYR4 | 2012–2019 |
| Ethylbenzene | 0.5100 µg/L 0.1% of the EPA limit 700 µg/L | 1/110 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 5.21 µg/L 104% of the EPA limit, at the 95th percentile of samples — 5 µg/L | 1/110 | SYR4 | 2012–2019 |
| Toluene | 1.14 µg/L 0.1% of the EPA limit 1000 µg/L | 1/110 | SYR4 | 2012–2019 |
78 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneThallium, TotalToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Dover Water Department
Is Dover Water Department tap water safe to drink?
EPA monitoring detected 28 contaminants in Dover Water Department's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in Dover Water Department's water?
EPA monitoring detected Fluoride, Chloroform, Nitrate, Bromodichloromethane, TTHM, and others. The full list with the level and data source for each is above.
How many people does Dover Water Department serve?
Dover Water Department reports serving 39,491 people in Delaware, per its EPA record.
Has Dover Water Department had any water quality violations?
The EPA has 32 violations on file for Dover Water Department, of which 25 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.
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.