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Tap water quality report

Lafayette City of

EPA monitoring tested this supplier for 104 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

104
contaminants tested
18
detected
28,700
people served
17
health-based violations
Colorado rankingsLead in ColoradoPFAS in Colorado
Water source
Surface water
Ownership
Local government
Counties served
Boulder

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
266
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2013-10-01 → 2013-10-31
MCL Health-based Resolved 2013-10-01 → 2013-10-31
MCL Health-based Resolved 2013-10-01 → 2013-10-31
MCL Health-based Resolved 2013-10-01 → 2013-10-31
MCL Health-based Resolved 2013-10-01 → 2013-10-31
TT Health-based Resolved 2003-10-01 → 2003-12-31
TT Health-based Resolved 2003-10-01 → 2003-12-31
TT Health-based Resolved 2003-10-01 → 2003-12-31
MCL Health-based Resolved 1997-10-01 → 1997-10-31
MCL Health-based Resolved 1997-10-01 → 1997-10-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
TTHM
85.555 µg/L 107%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 108 µg/L
128/128 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
32.915 µg/L 55%
of the EPA limit 60 µg/L
worst single sample: 40.2 µg/L
128/128 SYR4 2012–2019
Bromodichloromethane
20.82 µg/L
No EPA limit set
worst single sample: 24.1 µg/L
73/73 SYR4 2012–2019
Chloroform
45.54 µg/L
No EPA limit set
worst single sample: 55.7 µg/L
73/73 SYR4 2012–2019
Dibromochloromethane
9.08 µg/L
No EPA limit set
worst single sample: 9.7 µg/L
73/73 SYR4 2012–2019
Dichloroacetic Acid
15.414 µg/L
No EPA limit set
worst single sample: 16.7 µg/L
72/72 SYR4 2015–2019
Trichloroacetic Acid
8.7285 µg/L
No EPA limit set
worst single sample: 9.2 µg/L
72/72 SYR4 2015–2019
Dibromoacetic Acid
2.87 µg/L
No EPA limit set
worst single sample: 3.2 µg/L
54/72 SYR4 2015–2019
Bromoform
1.3 µg/L
No EPA limit set
worst single sample: 1.4 µg/L
29/73 SYR4 2012–2019
Monochloroacetic Acid
2.085 µg/L
No EPA limit set
worst single sample: 2.2 µg/L
24/72 SYR4 2015–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2025
Fluoride
1014.5 µg/L 25%
of the EPA limit 4000 µg/L
worst single sample: 1190 µg/L
14/15 SYR4 2012–2019
Barium
49.25 µg/L 2.5%
of the EPA limit 2000 µg/L
worst single sample: 51 µg/L
8/8 SYR4 2012–2019
Monobromoacetic Acid
1.3 µg/L
No EPA limit set
 6/72 SYR4 2015–2019
Nitrate
76 µg/L 0.8%
of the EPA limit 10000 µg/L
 6/18 SYR4 2012–2019
Nitrate-Nitrite
75.5 µg/L 0.8%
of the EPA limit 10000 µg/L
worst single sample: 76 µg/L
2/2 SYR4 2012–2013
Selenium
0.9900 µg/L 2%
of the EPA limit 50 µg/L
worst single sample: 1 µg/L
2/8 SYR4 2012–2019
Chromium
1 µg/L 1%
of the EPA limit 100 µg/L
 1/8 SYR4 2012–2019
86 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, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
ARTHUR, JEFF
Phone
303-661-1282
Email
[email protected]

Frequently asked questions about Lafayette City of

Is Lafayette City of tap water safe to drink?

EPA monitoring detected 18 contaminants in Lafayette 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 Lafayette City of's water?

EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Bromodichloromethane, Chloroform, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Lafayette City of serve?

Lafayette City of reports serving 28,700 people in Colorado, per its EPA record.

Has Lafayette City of had any water quality violations?

The EPA has 266 violations on file for Lafayette 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.