Hydrohistorian
City of Montrose
Serves Montrose.
Boundary traced from Syril Whitlock, Engineering Tech., City of Montrose. About 42 km².
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| PUR 143621 PROJECT 7 | Consecutive connection (purchased) | Surface water · from PROJECT 7 WA |
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 2026-10-06 · 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 2026-10-07 · verify at EPA ECHO ↗
2 violations open now, none health-based. These are monitoring, reporting or notice requirements — a sample not taken, or a result not filed on time. They are real obligations, but they are not a finding about the water itself.
EPA's own summary: violations in 4 of the last 12 quarters. In violation for, in EPA's words: 7500=Public Notice. Currently: 7500=Public Notice.
What happened
All 2 violation records on file, grouped into the 1 distinct thing EPA's codes describe. Dates are the compliance period the violation is filed against.
Rule: Public Notice Rule -- telling customers about a problem.
Every violation record, as filed (2 of 2)
| Compliance period | What | About | Kind | Status | Measured |
|---|---|---|---|---|---|
| 2025-11-07 | PN Violation without NPDWR Violation | Public Notice | other | open | |
| 2025-08-09 | PN Violation without NPDWR Violation | Public Notice | other | open |
What the regulator did about it
2 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.
| Date | Action | By |
|---|---|---|
| 2025-11-24 | St Violation/Reminder Notice | state |
| 2025-09-18 | St Violation/Reminder Notice | state |
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 2026-10-09 · verify at EPA UCMR occurrence data ↗
4 samples, 120 results, 2024-09-16 to 2025-06-16. No PFAS was detected at the reporting limits; lithium was measured up to 16.9 µg/L (no federal limit).
| Contaminant | Results | Detected | Highest, µg/L | Reporting limit |
|---|---|---|---|---|
| HFPO-DA | 4 | 0 | < 0.005 | 0.005 |
| PFHxS | 4 | 0 | < 0.003 | 0.003 |
| PFNA | 4 | 0 | < 0.004 | 0.004 |
| PFOA | 4 | 0 | < 0.004 | 0.004 |
| PFOS | 4 | 0 | < 0.004 | 0.004 |
| lithium | 4 | 2 | 16.9 | 9.0 |
Rows shown: every detected contaminant plus the regulated PFAS and lithium; the rest were below their reporting limits. These are UCMR monitoring samples, not compliance samples. EPA's April 2024 rule set 4.0 ng/L (0.004 µg/L) for PFOA and PFOS, the same as UCMR 5's reporting limit, so any detection of either is at or above it; the rule's compliance date and its other limits have been under revision since 2025 and are not applied here. State PFAS sampling is on CDPHE's pages ↗.
Common questions
Who provides drinking water in Montrose, Colorado?
The City of Montrose is the public water system serving 19,305 people in Montrose County, from purchased surface water. Its EPA public water system id is CO0143518.
Where does the City of Montrose get its water?
The City of Montrose reports purchased surface water as its primary source. EPA lists its source facilities as PUR 143621 PROJECT 7.
Does the City of Montrose have any drinking water violations?
EPA's compliance record shows no open health-based violations for the City of Montrose at the last monthly fetch. Older and non-health-based entries, if any, are listed on this page.
Places this system serves
Census places its EPA service-area boundary substantially covers. Each page lists every system serving that place.
Every provider in Montrose County.
The record
EPA SDWIS federal reporting as of 2026-10-06; the compliance record above is EPA's own, fetched monthly, and the ECHO report carries the rest. Report a problem →