Hydrohistorian
Tri County Water Conservancy District
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| PURCHASED FROM PROJECT 7 CO0143621 | 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.
Wholesale connections
Buys water from PROJECT 7 WA.
Sells water to 6 systems: CORNERSTONE MD 1, MENOKEN WD, MOUNTAIN VIEW MOBILE HOME PARK, NORTHBROOK VILLAS MHC, OLATHE TOWN OF, CURECANTI NRA ELK CREEK.
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 ↗
No open violation and no health-based violation on EPA's federal record for this system at the last monthly fetch. That is a record of reported compliance, not a test result: SDWIS carries violations, not routine sample values.
EPA's own summary: violations in 0 of the last 12 quarters.
No health-based or open violation on the federal record for this system.
What the regulator did about it
3 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 |
|---|---|---|
| 2016-07-27 | St Compliance achieved | state |
| 2016-07-25 | St Violation/Reminder Notice | state |
| 2016-07-25 | St Public Notif requested | 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 ↗
12 samples, 120 results, 2023-06-06 to 2024-03-18. No PFAS was detected at the reporting limits; lithium was measured up to 14.4 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 | 1 | 14.4 | 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?
Tri County Water Conservancy District is the public water system serving 20,490 people in Montrose County, from purchased surface water. Its EPA public water system id is CO0143755.
Where does Tri County Water Conservancy District get its water?
Tri County Water Conservancy District reports purchased surface water as its primary source. EPA lists its source facilities as PURCHASED FROM PROJECT 7 CO0143621.
Does Tri County Water Conservancy District have any drinking water violations?
EPA's compliance record shows no open health-based violations for Tri County Water Conservancy District at the last monthly fetch. Older and non-health-based entries, if any, are listed on this page.
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 →