Is Left Hand Wd Tap Water Safe? Quality Report

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.

health-based violations

209

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2002-09-01 → 2002-09-30
TT	Health-based	Resolved	2002-09-01 → 2002-09-30
TT	Health-based	Resolved	2002-09-01 → 2002-09-30
TT	Health-based	Resolved	2002-09-01 → 2002-09-30
MR	Monitoring	Resolved	2017-11-01 → 2017-11-30
MR	Monitoring	Resolved	2017-11-01 → 2017-11-30
MR	Monitoring	Resolved	2017-11-01 → 2017-11-30
MR	Monitoring	Resolved	2017-11-01 → 2017-11-30
MR	Monitoring	Resolved	2017-11-01 → 2017-11-30
MR	Monitoring	Resolved	2017-11-01 → 2017-11-30

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
TTHM	87.53 µg/L 109% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 115.45 µg/L	102/102	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	48.28 µg/L 80% of the EPA limit 60 µg/L worst single sample: 88.1 µg/L	97/98	SYR4	2012–2019
Bromodichloromethane	12.51 µg/L No EPA limit set worst single sample: 14.7 µg/L	60/60	SYR4	2012–2019
Chloroform	71.11 µg/L No EPA limit set worst single sample: 83.2 µg/L	60/60	SYR4	2012–2019
Dichloroacetic Acid	18.8 µg/L No EPA limit set worst single sample: 26 µg/L	51/51	SYR4	2015–2019
Trichloroacetic Acid	19.929 µg/L No EPA limit set worst single sample: 20.52 µg/L	50/51	SYR4	2015–2019
Monochloroacetic Acid	2.74 µg/L No EPA limit set worst single sample: 5.7 µg/L	27/51	SYR4	2015–2019
Fluoride	934.5 µg/L 23% of the EPA limit 4000 µg/L worst single sample: 1100 µg/L	24/24	SYR4	2012–2019
Dibromochloromethane	2.61 µg/L No EPA limit set worst single sample: 2.8 µg/L	20/60	SYR4	2012–2019
Lead	0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L	18/18	LCR	2025
Barium	50.25 µg/L 2.5% of the EPA limit 2000 µg/L worst single sample: 54 µg/L	16/16	SYR4	2012–2019
Nitrate	240 µg/L 2.4% of the EPA limit 10000 µg/L	12/30	SYR4	2012–2019
Hexachlorocyclopentadiene	0.1064 µg/L 0.2% of the EPA limit 50 µg/L worst single sample: 0.1100 µg/L	3/13	SYR4	2012–2017
Nitrite	8.11 µg/L 0.8% of the EPA limit 1000 µg/L worst single sample: 8.4 µg/L	3/3	SYR4	2012–2013
Selenium	1.1 µg/L 2.2% of the EPA limit 50 µg/L	3/16	SYR4	2012–2019
Combined Radium (-226 And -228)	0.2000 pCi/L 4% of the EPA limit 5 pCi/L	2/2	SYR4	2012
Gross Alpha, Excl. Radon And U	1.285 pCi/L 8.6% of the EPA limit 15 pCi/L worst single sample: 1.3 pCi/L	2/2	SYR4	2012
Nitrate-Nitrite	21.175 µg/L 0.2% of the EPA limit 10000 µg/L worst single sample: 22 µg/L	2/2	SYR4	2012
Xylenes, Total	4.965 µg/L 0% of the EPA limit 10000 µg/L worst single sample: 5.2 µg/L	2/22	SYR4	2012–2019
Ethylbenzene	0.6100 µg/L 0.1% of the EPA limit 700 µg/L	1/22	SYR4	2012–2019
Hexachlorobenzene	0.0150 µg/L 1.5% of the EPA limit 1 µg/L	1/15	SYR4	2012–2019

87 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, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinGlyphosateHfpo-DaHeptachlorHeptachlor EpoxideLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: WHITMORE, JASON
Phone: 303-530-4200
Email: [email protected]

Frequently asked questions about Left Hand Wd

Is Left Hand Wd tap water safe to drink?

EPA monitoring detected 21 contaminants in Left Hand Wd'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 Left Hand Wd's water?

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

How many people does Left Hand Wd serve?

Left Hand Wd reports serving 20,280 people in Colorado, per its EPA record.

Has Left Hand Wd had any water quality violations?

The EPA has 209 violations on file for Left Hand Wd, of which 4 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.