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Ranch at Coulter Creek Homeowners Association

Ranch at Coulter Creek Homeowners Association is the public water system serving 27 people in Garfield County, from groundwater. EPA has no service-area boundary on file for this system, so it cannot be drawn on a map.
Community system · EPA id CO0123666 · filed with EPA as “RANCH AT COULTER CREEK HOA”
People served
27
Service connections
15
Primary source
Groundwater
Owner
Private
Counties served
Garfield
Water district
no boundary on file

Where the water comes from

FacilityKindWater
WELL 1WellGroundwater
WELL 2WellGroundwater
WELL 3WellGroundwater

These are EPA's facility records, not DWR structures. Which decreed rights sit behind an intake is the next phase; nothing here is inferred.

DWR structures that name this system

Source Probable join · fetched 2026-09-09 · matched on DWR's recorded contact or an EPA intake name; verify on the dossier

No DWR structure on file records this system as its contact, and none of its EPA intakes matches a structure name in its districts. DWR records a contact on only a fraction of structures, and only for districts fetched from its live service, so this is absence of a record, not evidence of no rights.

Compliance record

Source Register of another agency · fetched 2026-09-09 · verify at EPA ECHO ↗

Nothing open today, but 2 health-based violations appear on the federal record historically. The history is below.

EPA's own summary: violations in 4 of the last 12 quarters, significant non-compliance in 1. In violation for, in EPA's words: 0600=Stage 2 Disinfectants and Disinfection Byproducts Rule; 0999=Chlorine; 1005=Arsenic; 1010=Barium; 1015=Cadmium; 1020=Chromium; 1025=Fluoride; 1035=Mercury; 1036=Nickel; 1040=Nitrate; 1045=Selenium; 1074=Antimony, Total; 1075=Beryllium, Total; 1085=Thallium, Total; 2005=Endrin; 2010=BHC-GAMMA; 2015=Methoxychlor; 2020=Toxaphene; 2031=Dalapon; 2032=Diquat; 2033=Endothall; 2035=Di(2-ethylhexyl) adipate; 2036=OXAMYL; 2037=Simazine; 2039=Di(2-ethylhexyl) phthalate; 2040=Picloram; 2041=Dinoseb; 2042=Hexachlorocyclopentadiene; 2043=Aldicarb sulfoxide; 2044=Aldicarb sulfone; 2046=Carbofuran; 2047=Aldicarb; 2050=Atrazine; 2051=LASSO; 2065=Heptachlor; 2067=Heptachlor epoxide; 2105=2,4-D; 2110=2,4,5-TP; 2274=HEXACHLOROBENZENE; 2306=Benzo(a)pyrene; 2326=Pentachlorophenol; 2378=1,2,4-Trichlorobenzene; 2380=cis-1,2-Dichloroethylene; 2383=Total Polychlorinated Biphenyls (PCB); 2931=1,2-DIBROMO-3-CHLOROPROPANE; 2946=ETHYLENE DIBROMIDE; 2955=Xylenes, Total; 2959=Chlordane; 2964=DICHLOROMETHANE; 2968=o-Dichlorobenzene; 2969=p-Dichlorobenzene; 2976=Vinyl chloride; 2977=1,1-Dichloroethylene; 2979=trans-1,2-Dichloroethylene; 2980=1,2-Dichloroethane; 2981=1,1,1-Trichloroethane; 2982=Carbon tetrachloride; 2983=1,2-Dichloropropane; 2984=Trichloroethylene; 2985=1,1,2-Trichloroethane; 2987=Tetrachloroethylene; 2989=CHLOROBENZENE; 2990=Benzene; 2991=Toluene; 2992=Ethylbenzene; 2996=Styrene; 4000=Gross Alpha, Excl. Radon and U; 4006=Combined Uranium; 4010=Combined Radium (-226 and -228); 8000=Revised Total Coliform Rule. Currently: 0600=Stage 2 Disinfectants and Disinfection Byproducts Rule; 1005=Arsenic.

What happened

All 2 violation records on file, grouped into the 2 distinct things EPA's codes describe. Dates are the compliance period the violation is filed against.

MCL, Average — Arsenic health-based
A measured contaminant level went over the federal limit. 1 record, 2026-01-01. Highest measured: 0.013 MG/L against a limit of 0.01.
Rule: Arsenic.
Treatment Technique No Certif. Operator — DBP Stage 1 health-based
A required treatment step was not carried out or not proved. 1 record, 2025-06-02.
Rule: Stage 1 Disinfectants and Disinfection Byproducts Rule.
Every violation record, as filed (2 of 2)
Compliance periodWhatAboutKindStatusMeasured
2026-01-01 – 2026-03-31 MCL, Average Arsenic health-based known, archived 0.013 MG/L (limit 0.01)
2025-06-02 Treatment Technique No Certif. Operator DBP Stage 1 health-based returned to compliance (2025-12-05)

What the regulator did about it

66 enforcement actions on this system's federal record. In Colorado the state is the primacy agency, so most actions are the state's; EPA acts directly on tribal systems and when it steps in.

DateActionBy
2026-04-16 St Public Notif received
PN completed ESS 4/16/26
state
2026-03-12 St Violation/Reminder Notice state
2026-03-12 St Public Notif requested state
2026-01-30 St Violation/Reminder Notice state
2026-01-30 St Public Notif requested state
2026-01-30 St Compliance achieved
Late reporting on 1/14/26 ESS 1/30/26
state
2026-01-30 St Violation/Reminder Notice state
2026-01-30 St Public Notif requested state
2026-01-30 St Compliance achieved
Late reporting on 1/26/26 ESS 1/30/26
state
2026-01-30 St Violation/Reminder Notice state
2026-01-30 St Public Notif requested state
2026-01-30 St Compliance achieved
SOXing with late reporting on 1/14/26 ESS 1/30/36
state
2026-01-09 St Compliance achieved
Completed DBP sites in the DWP ESS 1/9/26
state
2026-01-02 St Compliance achieved
Sampled 4Q2025 nitrate, RTC with data submission on 1/2/26 ESS 1/12/26
state
2026-01-02 St Compliance achieved
Sampled 4Q2025 fluoride, RTC with data submission on 1/2/26 ESS 1/12/26
state
2026-01-02 St Compliance achieved
Took 4Q2025 CIOC samples, RTC with data submission on 1/2/26 ESS 1/12/26
state
2026-01-02 St Compliance achieved
Took 4Q2025 SOCA samples, RTC with data submission on 1/2/26 ESS 1/12/26
state
2026-01-02 St Compliance achieved
Took 4Q2025 CVOC samples, RTC with data submission on 1/2/26 ESS 1/12/26
state
2025-12-05 St Public Notif received state
2025-12-05 St Compliance achieved
PN and COD completed ESS 12/12/25
state

20 most recent of 66; the rest are on the ECHO report.

Lead and copper

The latest 90th-percentile lead result is 0.0015 mg/L (sampling period ending 2026-06-30) against an action level of 0.015 mg/L, below it. 2 results on file.

The action level is not a health limit: it is the level at which the rule requires a system to act (corrosion control, public education, and in some cases replacing lead service lines). Lead mostly enters water from household plumbing, so a system-wide percentile does not tell you what comes out of one tap.

Violation, enforcement and lead/copper records are EPA SDWIS federal reporting, fetched monthly; the summary is EPA ECHO. Code names come from EPA's own REF_CODE_VALUE table. SDWIS carries violations, not routine sample results — nitrate, disinfection by-product and PFAS values are not in it, and a clean record here means nothing was reported as a violation, not that nothing was ever detected. For what was measured, ask the system for its Consumer Confidence Report.

PFAS and lithium: EPA's UCMR 5 monitoring, 2023–2025

Source Register of another agency · fetched 2026-09-09 · verify at EPA UCMR occurrence data ↗

EPA did not sample this system under UCMR 5 (the rule covered every system serving more than 3,300 people and a drawn sample of smaller ones).

Common questions

Who provides drinking water in Carbondale, Colorado?

Ranch at Coulter Creek Homeowners Association is the public water system serving 27 people in Garfield County, from groundwater. Its EPA public water system id is CO0123666.

Where does Ranch at Coulter Creek Homeowners Association get its water?

Ranch at Coulter Creek Homeowners Association reports groundwater as its primary source. EPA lists its source facilities as WELL 1, WELL 2, WELL 3.

Does Ranch at Coulter Creek Homeowners Association have any drinking water violations?

EPA's compliance record shows no open health-based violations for Ranch at Coulter Creek Homeowners Association at the last monthly fetch. Older and non-health-based entries, if any, are listed on this page.

Every provider in Garfield County.

The record

EPA SDWIS federal reporting as of 2026-09-08; the compliance record above is EPA's own, fetched monthly, and the ECHO report carries the rest. Report a problem →