Hydrohistorian
Twenty Mile Coal Co
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| WELL NO 01 FMC NO 1 | Well | Groundwater |
| PURCHASED FROM CO0241338 | Non-piped, purchased | Surface water · from WARREN INDUSTRIES INC |
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 WARREN INDUSTRIES INC.
DWR structures that name this system
Source Probable join · fetched 2026-11-06 · 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 2026-11-07 · 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 10 of the last 12 quarters, significant non-compliance in 1. In violation for, in EPA's words: 2959=Chlordane.
No health-based or open violation on the federal record for this system.
What the regulator did about it
87 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 |
|---|---|---|
| 2026-04-28 | St Public Notif received Copy of tier 3 PN for late reporting of chlordane sample results and COD certifying the notice was posted by 4/28/2026 submitted to portal same day -STF 4/28/2026 |
state |
| 2026-01-30 | St Compliance achieved RTC with late reporting of chlordane sample collected on time with the rest of SOC group sample (12/15/2025) but reported late on 1/30/2026. SOXed with date of late reporting -STF 4/28/2026 |
state |
| 2026-01-16 | St Violation/Reminder Notice | state |
| 2026-01-16 | St Public Notif requested | state |
| 2025-12-15 | St Compliance achieved RTC with VOC samples collected 12/15/2025 and reported on-time, soxed with date next compliant sample collected -STF 1/16/2026 |
state |
| 2025-04-02 | St Compliance achieved Copy of NTNC lead consumer notice and COD certifying the notice was posted by 1/2/2025 submitted via portal 4/2/2025 -STF 4/4/2025 |
state |
| 2025-04-01 | St Violation/Reminder Notice | state |
| 2025-04-01 | St Public Notif requested | state |
| 2023-11-06 | St Compliance achieved RTC with nitrate sample collected 11/6/2023 and reported on time -STF 1/23/2024 |
state |
| 2023-01-20 | St Violation/Reminder Notice | state |
| 2023-01-20 | St Public Notif requested | state |
| 2023-01-20 | St Violation/Reminder Notice | state |
| 2023-01-20 | St Public Notif requested | state |
| 2023-01-20 | St Violation/Reminder Notice | state |
| 2023-01-20 | St Public Notif requested | state |
| 2023-01-20 | St Violation/Reminder Notice | state |
| 2023-01-20 | St Public Notif requested | state |
| 2023-01-20 | St Violation/Reminder Notice | state |
| 2023-01-20 | St Public Notif requested | state |
| 2023-01-20 | St Violation/Reminder Notice | state |
20 most recent of 87; the rest are on the ECHO report.
Lead and copper
The latest 90th-percentile lead result is 0.0017 mg/L (sampling period ending 2026-06-30) against an action level of 0.015 mg/L, below it. 14 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 2026-10-09 · 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 Oak Creek, Colorado?
Twenty Mile Coal Co is the non-transient non-community water system (a school, workplace or similar) serving 475 people in Routt County, from purchased surface water. Its EPA public water system id is CO0254200.
Where does Twenty Mile Coal Co get its water?
Twenty Mile Coal Co reports purchased surface water as its primary source. EPA lists its source facilities as WELL NO 01 FMC NO 1, PURCHASED FROM CO0241338.
Does Twenty Mile Coal Co have any drinking water violations?
EPA's compliance record shows no open health-based violations for Twenty Mile Coal Co at the last monthly fetch. Older and non-health-based entries, if any, are listed on this page.
Every provider in Routt County.
The record
EPA SDWIS federal reporting as of 2026-11-06; the compliance record above is EPA's own, fetched monthly, and the ECHO report carries the rest. Report a problem →