Hydrohistorian
Colorado Mountain Ranch
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| PURCHASED WATER FROM CO0107152 | Non-piped, purchased | Surface water · from BOULDER CITY OF |
These are EPA's facility records, not DWR structures. Which decreed rights sit behind an intake is the next phase; nothing here is inferred.
Wholesale connections
Buys water from BOULDER CITY OF.
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 1 health-based violation appears on the federal record historically. The history is below.
EPA's own summary: violations in 0 of the last 12 quarters.
What happened
All 1 violation record on file, grouped into the 1 distinct thing EPA's codes describe. Dates are the compliance period the violation is filed against.
Rule: Surface Water Treatment Rule -- filtration and disinfection.
Every violation record, as filed (1 of 1)
| Compliance period | What | About | Kind | Status | Measured |
|---|---|---|---|---|---|
| 2006-01-01 | Failure to Filter (SWTR) | SWTR | health-based | returned to compliance (2006-05-19) |
No enforcement action against this system on the federal record.
No lead or copper 90th-percentile result on the federal record for this system.
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 Boulder, Colorado?
Colorado Mountain Ranch is the transient non-community water system (a campground, restaurant or similar) serving 205 people in Boulder County, from purchased surface water. Its EPA public water system id is CO0207755.
Where does Colorado Mountain Ranch get its water?
Colorado Mountain Ranch reports purchased surface water as its primary source. EPA lists its source facilities as PURCHASED WATER FROM CO0107152.
Does Colorado Mountain Ranch have any drinking water violations?
EPA's compliance record shows no open health-based violations for Colorado Mountain Ranch at the last monthly fetch. Older and non-health-based entries, if any, are listed on this page.
Every provider in Boulder 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 →