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.
12
health-based violations
376
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Resolved | 2023-07-01 → 2023-12-31 |
| TT | Health-based | Resolved | 2023-07-01 → 2023-12-31 |
| TT | Health-based | Resolved | 2023-07-01 → 2023-12-31 |
| MCL | Health-based | Resolved | 1999-02-01 → 1999-02-28 |
| MCL | Health-based | Resolved | 1999-02-01 → 1999-02-28 |
| MCL | Health-based | Resolved | 1997-12-01 → 1997-12-31 |
| MCL | Health-based | Resolved | 1997-12-01 → 1997-12-31 |
| MCL | Health-based | Resolved | 1993-07-01 → 1993-07-31 |
| MCL | Health-based | Resolved | 1993-04-01 → 1993-04-30 |
| MCL | Health-based | Resolved | 1993-04-01 → 1993-04-30 |
PFAS detected
PFAS are industrial “forever chemicals”. These are the EPA's latest
nationwide test results (2023–2025).
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 |
|---|---|---|---|---|
| Nitrate | 7510 µg/L 75% of the EPA limit 10000 µg/L
worst single sample: 12100 µg/L | 2286/2332 | SYR4 | 2012–2019 |
| Trichloroethylene | 13.2 µg/L 264% of the EPA limit, at the 95th percentile of samples — 5 µg/L
worst single sample: 19.7 µg/L | 780/2093 | SYR4 | 2012–2019 |
| 1,1-Dichloroethylene | 13.23 µg/L 189% of the EPA limit, at the 95th percentile of samples — 7 µg/L
worst single sample: 21.1 µg/L | 528/2153 | SYR4 | 2012–2019 |
| 1,1,1-Trichloroethane | 6.64 µg/L 3.3% of the EPA limit 200 µg/L
worst single sample: 8.8 µg/L | 493/2153 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 3.9 µg/L 78% of the EPA limit 5 µg/L
worst single sample: 6 µg/L | 433/2155 | SYR4 | 2012–2019 |
| cis-1,2-Dichloroethylene | 1.2 µg/L 1.7% of the EPA limit 70 µg/L
worst single sample: 2.9 µg/L | 316/2155 | SYR4 | 2012–2019 |
| Carbon Tetrachloride | 7.15 µg/L 143% of the EPA limit, at the 95th percentile of samples — 5 µg/L
worst single sample: 9.1 µg/L | 311/2152 | SYR4 | 2012–2019 |
| Barium | 14.965 µg/L 0.7% of the EPA limit 2000 µg/L
worst single sample: 50 µg/L | 282/302 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 6256 µg/L 63% of the EPA limit 10000 µg/L
worst single sample: 9910 µg/L | 265/279 | SYR4 | 2012–2019 |
| 1,2-Dichloropropane | 3.5 µg/L 70% of the EPA limit 5 µg/L
worst single sample: 4.5 µg/L | 187/2156 | SYR4 | 2012–2019 |
| Copper | 225.55 µg/L 17% of the EPA limit 1300 µg/L
worst single sample: 420 µg/L | 138/304 | SYR4 | 2012–2019 |
| Simazine | 2.174 µg/L 54% of the EPA limit 4 µg/L
worst single sample: 3 µg/L | 77/216 | SYR4 | 2012–2019 |
| Lead | 7.47 µg/L 50% of the EPA limit 15 µg/L
worst single sample: 9.1 µg/L | 38/301 | SYR4 | 2012–2019 |
| Combined Uranium | 0.7170 µg/L 2.4% of the EPA limit 30 µg/L
worst single sample: 0.8200 µg/L | 24/76 | SYR4 | 2012–2016 |
| Atrazine | 0.5808 µg/L 19% of the EPA limit 3 µg/L
worst single sample: 0.5960 µg/L | 20/160 | SYR4 | 2012–2019 |
| 1,2-Dichloroethane | 1.3 µg/L 26% of the EPA limit 5 µg/L | 16/2156 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 15/15 | LCR | 2025 |
| Combined Radium (-226 And -228) | 1.83 pCi/L 37% of the EPA limit 5 pCi/L
worst single sample: 2.13 pCi/L | 13/72 | SYR4 | 2012–2019 |
| Selenium | 2.84 µg/L 5.7% of the EPA limit 50 µg/L
worst single sample: 2.9 µg/L | 13/302 | SYR4 | 2012–2019 |
| Arsenic | 10.65 µg/L 107% of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 11 µg/L | 8/381 | SYR4 | 2012–2019 |
| Bromoform | 2.5 µg/L No EPA limit set
worst single sample: 2.6 µg/L | 6/529 | SYR4 | 2012–2019 |
| Dibromochloromethane | 1.214 µg/L No EPA limit set
worst single sample: 1.3 µg/L | 5/530 | SYR4 | 2012–2019 |
| TTHM | 3.98 µg/L 5% of the EPA limit 80 µg/L
worst single sample: 4.1 µg/L | 5/505 | SYR4 | 2012–2019 |
| Nitrite | 52.65 µg/L 5.3% of the EPA limit 1000 µg/L
worst single sample: 60 µg/L | 4/279 | SYR4 | 2012–2019 |
| Antimony, Total | 1.731 µg/L 29% of the EPA limit 6 µg/L
worst single sample: 1.77 µg/L | 3/303 | SYR4 | 2012–2019 |
| Chloroform | 0.7810 µg/L No EPA limit set
worst single sample: 0.8000 µg/L | 3/531 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 1.372 pCi/L No EPA limit set
worst single sample: 1.41 pCi/L | 3/4 | SYR4 | 2012–2019 |
| 1,1,2-Trichloroethane | 4.353 µg/L 87% of the EPA limit 5 µg/L
worst single sample: 4.44 µg/L | 2/2156 | SYR4 | 2012–2019 |
| Fluoride | 139 µg/L 3.5% of the EPA limit 4000 µg/L
worst single sample: 140 µg/L | 2/281 | SYR4 | 2012–2019 |
| Pentachlorophenol | 0.0563 µg/L 5.6% of the EPA limit 1 µg/L
worst single sample: 0.0570 µg/L | 2/146 | SYR4 | 2012–2019 |
| Thallium, Total | 0.7710 µg/L 39% of the EPA limit 2 µg/L
worst single sample: 0.7900 µg/L | 2/308 | SYR4 | 2012–2019 |
| Toluene | 1.09 µg/L 0.1% of the EPA limit 1000 µg/L
worst single sample: 1.1 µg/L | 2/2156 | SYR4 | 2012–2019 |
| Beryllium, Total | 0.3400 µg/L 8.5% of the EPA limit 4 µg/L | 1/297 | SYR4 | 2012–2019 |
| Bromodichloromethane | 0.5800 µg/L No EPA limit set | 1/529 | SYR4 | 2012–2019 |
| Chromium | 16 µg/L 16% of the EPA limit 100 µg/L | 1/305 | SYR4 | 2012–2019 |
| Ethylbenzene | 0.6000 µg/L 0.1% of the EPA limit 700 µg/L | 1/2156 | SYR4 | 2012–2019 |
65 contaminants tested, none detected
1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts8:2 Fts9Cl-PF3ONSAdonaBhc-GammaBenzeneBenzo(A)PyreneChlorobenzeneCyanideCadmiumCarbofuranChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPFBSPfdaPfdoaPfeesaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPicloramStyreneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl ChlorideLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Jericho Wd
Is Jericho Wd tap water safe to drink?
EPA monitoring detected 41 contaminants in Jericho Wd'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 Jericho Wd's water?
EPA monitoring detected Nitrate, Trichloroethylene, 1,1-Dichloroethylene, 1,1,1-Trichloroethane, Tetrachloroethylene, and others. The full list with the level and data source for each is above.
How many people does Jericho Wd serve?
Jericho Wd reports serving 58,000 people in New York, per its EPA record.
Has Jericho Wd had any water quality violations?
The EPA has 376 violations on file for Jericho Wd, of which 12 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.