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.
21
health-based violations
26
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Resolved | 2025-07-01 → 2025-07-31 |
| TT | Health-based | Resolved | 2025-07-01 → 2025-07-31 |
| TT | Health-based | Resolved | 2025-07-01 → 2025-07-31 |
| TT | Health-based | Resolved | 2025-07-01 → 2025-07-31 |
| TT | Health-based | Resolved | 2025-07-01 → 2025-07-31 |
| TT | Health-based | Resolved | 2025-07-01 → 2025-07-31 |
| TT | Health-based | Resolved | 2025-07-01 → 2025-07-31 |
| TT | Health-based | Resolved | 2025-07-01 → 2025-07-31 |
| TT | Health-based | Resolved | 2025-07-01 → 2025-07-31 |
| TT | Health-based | Resolved | 2018-10-01 → 2018-10-31 |
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 |
|---|---|---|---|---|
| Bromodichloromethane | 13.5 µg/L No EPA limit set
worst single sample: 30.5 µg/L | 70/70 | SYR4 | 2012–2019 |
| Chloroform | 19.37 µg/L No EPA limit set
worst single sample: 84.9 µg/L | 70/70 | SYR4 | 2012–2019 |
| Dibromochloromethane | 9.165 µg/L No EPA limit set
worst single sample: 13.2 µg/L | 70/70 | SYR4 | 2012–2019 |
| Copper | 228.8 µg/L 18% of the EPA limit 1300 µg/L
worst single sample: 470 µg/L | 65/65 | SYR4 | 2013–2017 |
| Dichloroacetic Acid | 22.415 µg/L No EPA limit set
worst single sample: 103.7 µg/L | 62/62 | SYR4 | 2012–2019 |
| TTHM | 40.045 µg/L 50% of the EPA limit 80 µg/L
worst single sample: 125 µg/L | 62/63 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 37.34 µg/L 62% of the EPA limit 60 µg/L
worst single sample: 129 µg/L | 62/62 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 6 µg/L No EPA limit set
worst single sample: 6.8 µg/L | 61/62 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 6.2 µg/L No EPA limit set
worst single sample: 20.4 µg/L | 61/62 | SYR4 | 2012–2019 |
| Bromoform | 5.065 µg/L No EPA limit set
worst single sample: 8.4 µg/L | 60/70 | SYR4 | 2012–2019 |
| Chlorite | 131.7 µg/L 13% of the EPA limit 1000 µg/L
worst single sample: 220 µg/L | 55/213 | SYR4 | 2013–2019 |
| Lead | 6.38 µg/L 43% of the EPA limit 15 µg/L
worst single sample: 8.7 µg/L | 53/65 | SYR4 | 2013–2017 |
| Nitrate | 3761.5 µg/L 38% of the EPA limit 10000 µg/L
worst single sample: 3930 µg/L | 22/22 | SYR4 | 2012–2019 |
| Lead | 0.0018 mg/L 12% of the EPA limit 0.0150 mg/L | 19/19 | LCR | 2025 |
| Fluoride | 176.5 µg/L 4.4% of the EPA limit 4000 µg/L
worst single sample: 180 µg/L | 8/8 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 18.105 µg/L No EPA limit set
worst single sample: 23.6 µg/L | 8/62 | SYR4 | 2012–2019 |
| Barium | 72.04 µg/L 3.6% of the EPA limit 2000 µg/L
worst single sample: 72.7 µg/L | 7/7 | SYR4 | 2013–2019 |
| Cyanide | 116 µg/L 58% of the EPA limit 200 µg/L
worst single sample: 120 µg/L | 2/6 | SYR4 | 2014–2019 |
| Monobromoacetic Acid | 1.19 µg/L No EPA limit set
worst single sample: 1.2 µg/L | 2/62 | SYR4 | 2012–2019 |
| Arsenic | 1.39 µg/L 14% of the EPA limit 10 µg/L | 1/7 | SYR4 | 2013–2019 |
| Chromium | 2.38 µg/L 2.4% of the EPA limit 100 µg/L | 1/7 | SYR4 | 2013–2019 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L | 1/1 | SYR4 | 2016 |
| Nitrate-Nitrite | 3930 µg/L 39% of the EPA limit 10000 µg/L | 1/1 | SYR4 | 2013 |
| Selenium | 3.4 µg/L 6.8% of the EPA limit 50 µg/L | 1/7 | SYR4 | 2013–2019 |
| Simazine | 0.0700 µg/L 1.8% of the EPA limit 4 µg/L | 1/10 | SYR4 | 2012–2019 |
| Thallium, Total | 0.2440 µg/L 12% of the EPA limit 2 µg/L | 1/7 | SYR4 | 2013–2019 |
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 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramStyreneTetrachloroethyleneTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about City of Marble Falls
Is City of Marble Falls tap water safe to drink?
EPA monitoring detected 28 contaminants in City of Marble Falls'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 City of Marble Falls's water?
EPA monitoring detected Bromodichloromethane, Chloroform, Dibromochloromethane, Copper, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.
How many people does City of Marble Falls serve?
City of Marble Falls reports serving 8,059 people in Texas, per its EPA record.
Has City of Marble Falls had any water quality violations?
The EPA has 26 violations on file for City of Marble Falls, of which 21 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.