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.
115
health-based violations
205
violations on file
1
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Resolved | 2024-10-17 |
| TT | Health-based | Resolved | 2024-10-17 |
| TT | Health-based | Resolved | 2024-10-17 |
| TT | Health-based | Resolved | 2024-10-17 |
| MCL | Health-based | Resolved | 2023-07-01 → 2023-09-30 |
| MCL | Health-based | Resolved | 2023-07-01 → 2023-09-30 |
| MCL | Health-based | Resolved | 2023-07-01 → 2023-09-30 |
| MCL | Health-based | Resolved | 2023-07-01 → 2023-09-30 |
| MCL | Health-based | Resolved | 2013-01-01 → 2013-03-31 |
| MCL | Health-based | Resolved | 2013-01-01 → 2013-03-31 |
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 | 7110 µg/L 71% of the EPA limit 10000 µg/L
worst single sample: 8760 µg/L | 92/92 | SYR4 | 2012–2019 |
| Arsenic | 12.835 µg/L 128% of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 14.5 µg/L | 32/32 | SYR4 | 2012–2019 |
| Copper | 91.5 µg/L 7% of the EPA limit 1300 µg/L
worst single sample: 110 µg/L | 27/29 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 6971 µg/L 70% of the EPA limit 10000 µg/L
worst single sample: 7630 µg/L | 22/22 | SYR4 | 2012–2015 |
| Gross Beta Particle Activity | 14.1 pCi/L No EPA limit set | 17/17 | SYR4 | 2012–2019 |
| Combined Uranium | 17 µg/L 57% of the EPA limit 30 µg/L
worst single sample: 20.6 µg/L | 16/16 | SYR4 | 2013–2019 |
| Gross Alpha, Excl. Radon And U | 18.25 pCi/L 122% of the EPA limit, at the 95th percentile of samples — 15 pCi/L
worst single sample: 19 pCi/L | 16/16 | SYR4 | 2013–2019 |
| Bromoform | 12.18 µg/L No EPA limit set
worst single sample: 12.4 µg/L | 12/12 | SYR4 | 2013–2019 |
| Dibromochloromethane | 2.9045 µg/L No EPA limit set
worst single sample: 2.91 µg/L | 12/12 | SYR4 | 2013–2019 |
| Fluoride | 3508.5 µg/L 88% of the EPA limit 4000 µg/L
worst single sample: 3610 µg/L | 8/8 | SYR4 | 2012–2019 |
| Lead | 6.924 µg/L 46% of the EPA limit 15 µg/L
worst single sample: 9.36 µg/L | 8/29 | SYR4 | 2012–2019 |
| Lithium | 124 µg/L No EPA limit set | 8/8 | UCMR-5 | 2024 |
| Dibromoacetic Acid | 5.25 µg/L No EPA limit set
worst single sample: 5.4 µg/L | 7/7 | SYR4 | 2013–2019 |
| TTHM | 14.84 µg/L 19% of the EPA limit 80 µg/L
worst single sample: 14.9 µg/L | 7/7 | SYR4 | 2013–2019 |
| Total Haloacetic Acids (HAA5) | 19.72 µg/L 33% of the EPA limit 60 µg/L
worst single sample: 24.7 µg/L | 7/7 | SYR4 | 2013–2019 |
| Barium | 70.25 µg/L 3.5% of the EPA limit 2000 µg/L
worst single sample: 71 µg/L | 6/6 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 6/6 | LCR | 2025 |
| Selenium | 15.775 µg/L 32% of the EPA limit 50 µg/L
worst single sample: 18 µg/L | 6/6 | SYR4 | 2012–2019 |
| Chromium | 2.89 µg/L 2.9% of the EPA limit 100 µg/L
worst single sample: 3 µg/L | 3/6 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 18.27 µg/L No EPA limit set
worst single sample: 19.8 µg/L | 3/7 | SYR4 | 2013–2019 |
| Combined Radium (-226 And -228) | 2.1035 pCi/L 42% of the EPA limit 5 pCi/L
worst single sample: 2.14 pCi/L | 2/17 | SYR4 | 2012–2019 |
| Cyanide | 14.9 µg/L 7.5% of the EPA limit 200 µg/L | 1/4 | SYR4 | 2014–2019 |
| Ethylbenzene | 0.5800 µg/L 0.1% of the EPA limit 700 µg/L | 1/5 | SYR4 | 2015–2019 |
| Xylenes, Total | 4.58 µg/L 0% of the EPA limit 10000 µg/L | 1/5 | SYR4 | 2015–2019 |
82 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebEthylene DibromideEndrinHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Airline Crossing
Is Airline Crossing tap water safe to drink?
EPA monitoring detected 27 contaminants in Airline Crossing'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 Airline Crossing's water?
EPA monitoring detected Nitrate, Arsenic, Copper, Nitrate-Nitrite, Gross Beta Particle Activity, and others. The full list with the level and data source for each is above.
How many people does Airline Crossing serve?
Airline Crossing reports serving 1,973 people in California, per its EPA record.
Has Airline Crossing had any water quality violations?
The EPA has 205 violations on file for Airline Crossing, of which 115 are health-based (a contaminant limit or required treatment was breached) and 1 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.