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Tap water quality report

Alamosa City of

EPA monitoring tested this supplier for 104 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

104
contaminants tested
15
detected
11,271
people served
94
health-based violations
Colorado rankingsLead in ColoradoPFAS in Colorado
Water source
Ground water
Ownership
Local government
Counties served
Alamosa

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.

94
health-based violations
654
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Arsenic
9.3 µg/L 93%
of the EPA limit 10 µg/L
 26/26 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 22/22 LCR 2025
Nitrate
78 µg/L 0.8%
of the EPA limit 10000 µg/L
 10/16 SYR4 2012–2019
TTHM
7.8 µg/L 9.8%
of the EPA limit 80 µg/L
 9/14 SYR4 2012–2019
Chloroform
3.6 µg/L
No EPA limit set
 5/8 SYR4 2012–2019
Bromodichloromethane
3.2 µg/L
No EPA limit set
 4/8 SYR4 2012–2019
Barium
19 µg/L 1%
of the EPA limit 2000 µg/L
 3/3 SYR4 2012–2017
Fluoride
1400 µg/L 35%
of the EPA limit 4000 µg/L
 3/3 SYR4 2012–2017
Dibromochloromethane
1.1 µg/L
No EPA limit set
 2/8 SYR4 2012–2019
Nitrate-Nitrite
47 µg/L 0.5%
of the EPA limit 10000 µg/L
 2/2 SYR4 2012–2014
Total Haloacetic Acids (HAA5)
8.4 µg/L 14%
of the EPA limit 60 µg/L
 2/12 SYR4 2012–2019
Lithium
15.8 µg/L
No EPA limit set
 2/2 UCMR-5 2023
Antimony, Total
0.5000 µg/L 8.3%
of the EPA limit 6 µg/L
 1/3 SYR4 2012–2017
Dichloroacetic Acid
1.6 µg/L
No EPA limit set
 1/5 SYR4 2015–2019
Monochloroacetic Acid
8.4 µg/L
No EPA limit set
 1/5 SYR4 2015–2019
89 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-PF3ONSAdonaAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
REYNOLDS, HARRY
Phone
719-589-6631
Email
HREYNOLDS@CI.ALAMOSA.CO.US

Frequently asked questions about Alamosa City of

Is Alamosa City of tap water safe to drink?

EPA monitoring detected 15 contaminants in Alamosa 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 Alamosa City of's water?

EPA monitoring detected Arsenic, Lead, Nitrate, TTHM, Chloroform, and others. The full list with the level and data source for each is above.

How many people does Alamosa City of serve?

Alamosa City of reports serving 11,271 people in Colorado, per its EPA record.

Has Alamosa City of had any water quality violations?

The EPA has 654 violations on file for Alamosa City of, of which 94 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.