Compliance record
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 |
|---|---|---|---|---|
| Bromodichloromethane | 16 µg/L No EPA limit set
worst single sample: 18 µg/L | 103/103 | SYR4 | 2012–2019 |
| Chloroform | 43.9 µg/L No EPA limit set
worst single sample: 54 µg/L | 103/103 | SYR4 | 2012–2019 |
| Dibromochloromethane | 6.3 µg/L No EPA limit set
worst single sample: 7.3 µg/L | 103/103 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 13.94 µg/L No EPA limit set
worst single sample: 16.5 µg/L | 103/103 | SYR4 | 2012–2019 |
| TTHM | 65.9 µg/L 82% of the EPA limit 80 µg/L
worst single sample: 78 µg/L | 103/103 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 27 µg/L 45% of the EPA limit 60 µg/L
worst single sample: 34.7 µg/L | 103/103 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 13 µg/L No EPA limit set
worst single sample: 17 µg/L | 103/103 | SYR4 | 2012–2019 |
| Fluoride | 900 µg/L 23% of the EPA limit 4000 µg/L | 68/68 | SYR4 | 2012–2018 |
| Dibromoacetic Acid | 1.2575 µg/L No EPA limit set
worst single sample: 1.54 µg/L | 46/103 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 1.3815 µg/L No EPA limit set
worst single sample: 1.44 µg/L | 38/103 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 3.02 µg/L No EPA limit set
worst single sample: 3.5 µg/L | 35/103 | SYR4 | 2012–2019 |
| Lead | 0.0057 mg/L 38% of the EPA limit 0.0150 mg/L | 12/12 | LCR | 2023 |
| Nitrate | 413 µg/L 4.1% of the EPA limit 10000 µg/L | 10/10 | SYR4 | 2012–2016 |
| Bromoform | 0.5460 µg/L No EPA limit set
worst single sample: 0.5500 µg/L | 9/103 | SYR4 | 2012–2019 |
| Barium | 23.61 µg/L 1.2% of the EPA limit 2000 µg/L
worst single sample: 24.3 µg/L | 7/7 | SYR4 | 2012–2018 |
| Nitrate-Nitrite | 397.7 µg/L 4% of the EPA limit 10000 µg/L
worst single sample: 413 µg/L | 3/5 | SYR4 | 2014–2018 |
| Arsenic | 0.6000 µg/L 6% of the EPA limit 10 µg/L | 2/7 | SYR4 | 2012–2018 |
| Hexachlorocyclopentadiene | 0.0950 µg/L 0.2% of the EPA limit 50 µg/L | 1/6 | SYR4 | 2012–2018 |
| Selenium | 3.1 µg/L 6.2% of the EPA limit 50 µg/L | 1/7 | SYR4 | 2012–2018 |
82 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
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Frequently asked questions about North Tonawanda City
Is North Tonawanda City tap water safe to drink?
EPA monitoring detected 19 contaminants in North Tonawanda City'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 North Tonawanda City's water?
EPA monitoring detected Bromodichloromethane, Chloroform, Dibromochloromethane, Dichloroacetic Acid, TTHM, and others. The full list with the level and data source for each is above.
How many people does North Tonawanda City serve?
North Tonawanda City reports serving 31,568 people in New York, per its EPA record.
Has North Tonawanda City had any water quality violations?
The EPA has no formal drinking-water violations on file for North Tonawanda City.
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.