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.
17
health-based violations
88
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2023-04-01 → 2023-06-30 |
| MCL | Health-based | Resolved | 2023-04-01 → 2023-06-30 |
| MCL | Health-based | Resolved | 2023-04-01 → 2023-06-30 |
| MCL | Health-based | Resolved | 2023-04-01 → 2023-06-30 |
| MCL | Health-based | Resolved | 2013-07-01 → 2013-07-31 |
| MCL | Health-based | Resolved | 2013-07-01 → 2013-07-31 |
| MCL | Health-based | Resolved | 2013-07-01 → 2013-07-31 |
| MCL | Health-based | Resolved | 2013-07-01 → 2013-07-31 |
| MCL | Health-based | Resolved | 2013-07-01 → 2013-07-31 |
| MCL | Health-based | Resolved | 2000-07-01 → 2000-07-31 |
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 |
|---|---|---|---|---|
| TTHM | 93.2 µg/L 117% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 106.2 µg/L | 156/156 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 34.325 µg/L 57% of the EPA limit 60 µg/L
worst single sample: 61.16 µg/L | 156/156 | SYR4 | 2012–2019 |
| Bromodichloromethane | 31.4 µg/L No EPA limit set
worst single sample: 37.4 µg/L | 91/92 | SYR4 | 2012–2019 |
| Dibromochloromethane | 28 µg/L No EPA limit set
worst single sample: 35.1 µg/L | 91/92 | SYR4 | 2012–2019 |
| Bromoform | 14.2 µg/L No EPA limit set
worst single sample: 18.8 µg/L | 88/92 | SYR4 | 2012–2019 |
| Chloroform | 27.55 µg/L No EPA limit set
worst single sample: 35.9 µg/L | 87/92 | SYR4 | 2012–2019 |
| Nitrate | 6500 µg/L 65% of the EPA limit 10000 µg/L
worst single sample: 6800 µg/L | 76/76 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 8.5035 µg/L No EPA limit set
worst single sample: 9.4 µg/L | 74/74 | SYR4 | 2015–2019 |
| Dichloroacetic Acid | 13.7 µg/L No EPA limit set
worst single sample: 17.44 µg/L | 73/74 | SYR4 | 2015–2019 |
| Trichloroacetic Acid | 8.483 µg/L No EPA limit set
worst single sample: 10.43 µg/L | 62/74 | SYR4 | 2015–2019 |
| Monobromoacetic Acid | 3.064 µg/L No EPA limit set
worst single sample: 4 µg/L | 53/74 | SYR4 | 2015–2019 |
| Fluoride | 1042.5 µg/L 26% of the EPA limit 4000 µg/L
worst single sample: 1380 µg/L | 36/36 | SYR4 | 2012–2019 |
| Xylenes, Total | 5.185 µg/L 0.1% of the EPA limit 10000 µg/L
worst single sample: 2300 µg/L | 24/38 | SYR4 | 2012–2019 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L | 20/20 | LCR | 2023 |
| Monochloroacetic Acid | 2.6095 µg/L No EPA limit set
worst single sample: 3.06 µg/L | 18/74 | SYR4 | 2015–2019 |
| Barium | 32 µg/L 1.6% of the EPA limit 2000 µg/L | 16/16 | SYR4 | 2012–2019 |
| Lithium | 31.9 µg/L No EPA limit set | 16/16 | UCMR-5 | 2025 |
| Selenium | 2.15 µg/L 4.3% of the EPA limit 50 µg/L
worst single sample: 2.3 µg/L | 11/16 | SYR4 | 2012–2019 |
| Ethylbenzene | 420.52 µg/L 60% of the EPA limit 700 µg/L
worst single sample: 700 µg/L | 9/38 | SYR4 | 2012–2019 |
| Arsenic | 1.8 µg/L 18% of the EPA limit 10 µg/L
worst single sample: 2 µg/L | 5/16 | SYR4 | 2012–2019 |
| Chromium | 2 µg/L 2% of the EPA limit 100 µg/L | 5/16 | SYR4 | 2012–2019 |
| Combined Uranium | 3.385 µg/L 11% of the EPA limit 30 µg/L
worst single sample: 3.4 µg/L | 4/4 | SYR4 | 2013–2016 |
| Combined Radium (-226 And -228) | 0.1950 pCi/L 3.9% of the EPA limit 5 pCi/L
worst single sample: 0.2000 pCi/L | 2/2 | SYR4 | 2013 |
| Gross Alpha, Excl. Radon And U | 4.8659 pCi/L 32% of the EPA limit 15 pCi/L
worst single sample: 5.022 pCi/L | 2/4 | SYR4 | 2013–2016 |
74 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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Brighton City of
Is Brighton City of tap water safe to drink?
EPA monitoring detected 31 contaminants in Brighton City of'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 Brighton City of's water?
EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Bromodichloromethane, Dibromochloromethane, Bromoform, and others. The full list with the level and data source for each is above.
How many people does Brighton City of serve?
Brighton City of reports serving 56,304 people in Colorado, per its EPA record.
Has Brighton City of had any water quality violations?
The EPA has 88 violations on file for Brighton City of, of which 17 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.