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 |
|---|---|---|---|---|
| Fluoride | 1001 µg/L 25% of the EPA limit 4000 µg/L
worst single sample: 1100 µg/L | 60/60 | SYR4 | 2012–2019 |
| Bromodichloromethane | 12.63 µg/L No EPA limit set
worst single sample: 13.9 µg/L | 35/35 | SYR4 | 2012–2013 |
| Chloroform | 30.62 µg/L No EPA limit set
worst single sample: 34.4 µg/L | 35/35 | SYR4 | 2012–2013 |
| Dibromochloromethane | 5.385 µg/L No EPA limit set
worst single sample: 5.59 µg/L | 35/35 | SYR4 | 2012–2013 |
| Dichloroacetic Acid | 14.3 µg/L No EPA limit set
worst single sample: 16 µg/L | 35/35 | SYR4 | 2012–2013 |
| TTHM | 48.72 µg/L 61% of the EPA limit 80 µg/L
worst single sample: 54.4 µg/L | 35/35 | SYR4 | 2012–2013 |
| Trichloroacetic Acid | 11 µg/L No EPA limit set
worst single sample: 12 µg/L | 35/35 | SYR4 | 2012–2013 |
| Total Haloacetic Acids (HAA5) | 27.7 µg/L 46% of the EPA limit 60 µg/L
worst single sample: 29 µg/L | 34/35 | SYR4 | 2012–2013 |
| Dibromoacetic Acid | 1.12 µg/L No EPA limit set
worst single sample: 1.2 µg/L | 17/35 | SYR4 | 2012–2013 |
| Lead | 0.0060 mg/L 40% of the EPA limit 0.0150 mg/L | 15/15 | LCR | 2023 |
| Monochloroacetic Acid | 9 µg/L No EPA limit set
worst single sample: 12.8 µg/L | 11/35 | SYR4 | 2012–2013 |
| Monobromoacetic Acid | 0.9255 µg/L No EPA limit set
worst single sample: 0.9300 µg/L | 10/35 | SYR4 | 2012–2013 |
| Barium | 21.365 µg/L 1.1% of the EPA limit 2000 µg/L
worst single sample: 21.4 µg/L | 8/8 | SYR4 | 2012–2019 |
| Nitrate | 200 µg/L 2% of the EPA limit 10000 µg/L | 8/10 | SYR4 | 2012–2016 |
| Arsenic | 0.8900 µg/L 8.9% of the EPA limit 10 µg/L
worst single sample: 0.9000 µg/L | 3/8 | SYR4 | 2012–2019 |
| Bromoform | 0.5290 µg/L No EPA limit set
worst single sample: 0.5300 µg/L | 2/35 | SYR4 | 2012–2013 |
| Nitrate-Nitrite | 194.39 µg/L 1.9% of the EPA limit 10000 µg/L
worst single sample: 200 µg/L | 2/5 | SYR4 | 2014–2019 |
| Combined Radium (-226 And -228) | 0.1200 pCi/L 2.4% of the EPA limit 5 pCi/L | 1/1 | SYR4 | 2014 |
| Combined Uranium | 0.0360 µg/L 0.1% of the EPA limit 30 µg/L | 1/1 | SYR4 | 2014 |
55 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
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Frequently asked questions about Niagara County Water District
Is Niagara County Water District tap water safe to drink?
EPA monitoring detected 19 contaminants in Niagara County Water District'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 Niagara County Water District's water?
EPA monitoring detected Fluoride, Bromodichloromethane, Chloroform, Dibromochloromethane, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.
How many people does Niagara County Water District serve?
Niagara County Water District reports serving 0 people in New York, per its EPA record.
Has Niagara County Water District had any water quality violations?
The EPA has no formal drinking-water violations on file for Niagara County Water District.
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.