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Tap water quality report

Southwest Horizon Ranch

EPA monitoring tested this supplier for 68 contaminants and detected 13. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

68
contaminants tested
13
detected
323
people served
3
health-based violations
Colorado rankingsLead in ColoradoPFAS in Colorado
Water source
Ground water
Ownership
Private
Counties served
La Plata

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.

3
health-based violations
791
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2005-06-01 → 2005-06-30
MCL Health-based Resolved 2005-06-01 → 2005-06-30
MCL Health-based Resolved 2005-06-01 → 2005-06-30
Other Monitoring Resolved 2022-05-05
Other Monitoring Resolved 2022-05-05
Other Monitoring Resolved 2022-05-05
MON Monitoring Resolved 2018-11-01 → 2018-11-30
MON Monitoring Resolved 2018-11-01 → 2018-11-30
MON Monitoring Resolved 2018-11-01 → 2018-11-30
MR Monitoring Resolved 2018-10-01 → 2018-12-31

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
Nitrate
2155 µg/L 22%
of the EPA limit 10000 µg/L
worst single sample: 2170 µg/L
24/24 SYR4 2012–2019
Lead
0.0014 mg/L 9.3%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2025
Nitrate-Nitrite
2115 µg/L 21%
of the EPA limit 10000 µg/L
worst single sample: 2170 µg/L
12/12 SYR4 2012–2019
Fluoride
3402 µg/L 85%
of the EPA limit 4000 µg/L
worst single sample: 4650 µg/L
7/7 SYR4 2016–2019
Barium
278 µg/L 14%
of the EPA limit 2000 µg/L
 6/6 SYR4 2016–2019
Selenium
8.575 µg/L 17%
of the EPA limit 50 µg/L
worst single sample: 9.3 µg/L
6/6 SYR4 2016–2019
Arsenic
2.08 µg/L 21%
of the EPA limit 10 µg/L
worst single sample: 2.2 µg/L
5/6 SYR4 2016–2019
Chromium
16.16 µg/L 16%
of the EPA limit 100 µg/L
worst single sample: 17 µg/L
5/6 SYR4 2016–2019
Combined Radium (-226 And -228)
1.994 pCi/L 40%
of the EPA limit 5 pCi/L
worst single sample: 2.02 pCi/L
5/5 SYR4 2016
Combined Uranium
1.44 µg/L 4.8%
of the EPA limit 30 µg/L
worst single sample: 1.5 µg/L
5/5 SYR4 2016
TTHM
10.914 µg/L 14%
of the EPA limit 80 µg/L
worst single sample: 11.1 µg/L
3/3 SYR4 2012–2018
Gross Alpha, Excl. Radon And U
3.899 pCi/L 26%
of the EPA limit 15 pCi/L
worst single sample: 3.99 pCi/L
2/5 SYR4 2016
Total Haloacetic Acids (HAA5)
5.6 µg/L 9.3%
of the EPA limit 60 µg/L
 1/3 SYR4 2012–2018
55 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CHAMBERS, TAMMY
Phone
970-385-7932
Email
[email protected]

Frequently asked questions about Southwest Horizon Ranch

Is Southwest Horizon Ranch tap water safe to drink?

EPA monitoring detected 13 contaminants in Southwest Horizon Ranch'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 Southwest Horizon Ranch's water?

EPA monitoring detected Nitrate, Lead, Nitrate-Nitrite, Fluoride, Barium, and others. The full list with the level and data source for each is above.

How many people does Southwest Horizon Ranch serve?

Southwest Horizon Ranch reports serving 323 people in Colorado, per its EPA record.

Has Southwest Horizon Ranch had any water quality violations?

The EPA has 791 violations on file for Southwest Horizon Ranch, of which 3 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.