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.
46
health-based violations
114
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2010-01-01 → 2010-03-31 |
| MCL | Health-based | Resolved | 2010-01-01 → 2010-03-31 |
| MCL | Health-based | Resolved | 2010-01-01 → 2010-03-31 |
| MCL | Health-based | Resolved | 2010-01-01 → 2010-03-31 |
| MCL | Health-based | Resolved | 2009-10-01 → 2009-12-31 |
| MCL | Health-based | Resolved | 2009-10-01 → 2009-12-31 |
| MCL | Health-based | Resolved | 2009-10-01 → 2009-12-31 |
| MCL | Health-based | Resolved | 2009-10-01 → 2009-12-31 |
| MCL | Health-based | Resolved | 2009-07-01 → 2009-09-30 |
| MCL | Health-based | Resolved | 2009-07-01 → 2009-09-30 |
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 | 25.285 µg/L No EPA limit set
worst single sample: 27.3 µg/L | 44/45 | SYR4 | 2012–2019 |
| Chloroform | 45.195 µg/L No EPA limit set
worst single sample: 48.8 µg/L | 44/45 | SYR4 | 2012–2019 |
| Dibromochloromethane | 21.01 µg/L No EPA limit set
worst single sample: 30.6 µg/L | 44/45 | SYR4 | 2012–2019 |
| TTHM | 89.54 µg/L 112% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 91.7 µg/L | 43/45 | SYR4 | 2012–2019 |
| Bromoform | 3.814 µg/L No EPA limit set
worst single sample: 8.18 µg/L | 37/45 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 5.644 µg/L No EPA limit set
worst single sample: 5.83 µg/L | 34/34 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 17.62 µg/L No EPA limit set
worst single sample: 18.6 µg/L | 34/34 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 30.005 µg/L 50% of the EPA limit 60 µg/L
worst single sample: 34.5 µg/L | 34/34 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 8.932 µg/L No EPA limit set
worst single sample: 9.52 µg/L | 34/34 | SYR4 | 2012–2019 |
| Nitrate | 514 µg/L 5.1% of the EPA limit 10000 µg/L | 18/18 | SYR4 | 2012–2018 |
| Fluoride | 312.05 µg/L 7.8% of the EPA limit 4000 µg/L
worst single sample: 317 µg/L | 10/10 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 10/10 | LCR | 2024 |
| Barium | 122.2 µg/L 6.1% of the EPA limit 2000 µg/L
worst single sample: 125 µg/L | 9/9 | SYR4 | 2012–2019 |
| Copper | 242.6 µg/L 19% of the EPA limit 1300 µg/L
worst single sample: 338 µg/L | 9/9 | SYR4 | 2012–2019 |
| Selenium | 5.606 µg/L 11% of the EPA limit 50 µg/L
worst single sample: 6.49 µg/L | 9/9 | SYR4 | 2012–2019 |
| Arsenic | 3.7195 µg/L 37% of the EPA limit 10 µg/L
worst single sample: 3.94 µg/L | 8/9 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 500.8 µg/L 5% of the EPA limit 10000 µg/L
worst single sample: 514 µg/L | 7/7 | SYR4 | 2012–2018 |
| Monobromoacetic Acid | 3.1475 µg/L No EPA limit set
worst single sample: 3.79 µg/L | 6/34 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 3.33 µg/L No EPA limit set
worst single sample: 3.55 µg/L | 5/34 | SYR4 | 2012–2019 |
| Chromium | 5.5565 µg/L 5.6% of the EPA limit 100 µg/L
worst single sample: 6.05 µg/L | 4/9 | SYR4 | 2012–2019 |
| Dalapon | 1.0814 µg/L 0.5% of the EPA limit 200 µg/L
worst single sample: 1.14 µg/L | 3/7 | SYR4 | 2012–2019 |
| Antimony, Total | 2.918 µg/L 49% of the EPA limit 6 µg/L
worst single sample: 3 µg/L | 2/9 | SYR4 | 2012–2019 |
| Combined Uranium | 4.2185 µg/L 14% of the EPA limit 30 µg/L
worst single sample: 4.23 µg/L | 2/2 | SYR4 | 2013–2016 |
| Xylenes, Total | 13.804 µg/L 0.1% of the EPA limit 10000 µg/L
worst single sample: 14.5 µg/L | 2/13 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L | 1/1 | SYR4 | 2016 |
| Ethylbenzene | 1.65 µg/L 0.2% of the EPA limit 700 µg/L | 1/13 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 1.77 pCi/L No EPA limit set | 1/1 | SYR4 | 2016 |
55 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Nps Callville Bay
Is Nps Callville Bay tap water safe to drink?
EPA monitoring detected 27 contaminants in Nps Callville Bay'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 Nps Callville Bay's water?
EPA monitoring detected Bromodichloromethane, Chloroform, Dibromochloromethane, TTHM, Bromoform, and others. The full list with the level and data source for each is above.
How many people does Nps Callville Bay serve?
Nps Callville Bay reports serving 250 people in Nevada, per its EPA record.
Has Nps Callville Bay had any water quality violations?
The EPA has 114 violations on file for Nps Callville Bay, of which 46 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.