Hydrohistorian
La Plata West Water Authority
Modelled boundary. EPA estimated this service area (Random Forest) rather than tracing a utility-supplied map; treat the edge as approximate. About 0 km².
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| PURCHASED WATER FROM CO0134530 LAKE DURA | Consecutive connection (purchased) | Surface water · from LAKE DURANGO 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 LAKE DURANGO WA.
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 ↗
1 violation 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 11 of the last 12 quarters. In violation for, in EPA's words: 5000=Lead and Copper Rule; 7500=Public Notice. Currently: 5000=Lead and Copper Rule; 7500=Public Notice.
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.
Rule: Lead and Copper Rule -- corrosion of household plumbing.
Rule: Stage 2 Disinfectants and Disinfection Byproducts Rule.
Every violation record, as filed (2 of 2)
| Compliance period | What | About | Kind | Status | Measured |
|---|---|---|---|---|---|
| 2026-01-01 | Lead Consumer Notice | Lead and Copper Rule | monitoring and reporting | open | |
| 2021-07-01 – 2021-09-30 | MCL, Average | TTHM | health-based | returned to compliance (2021-11-18) | 0.08281 MG/L (limit 0.08) |
What the regulator did about it
22 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 |
|---|---|---|
| 2026-02-17 | St Compliance achieved | state |
| 2026-02-12 | St Violation/Reminder Notice | state |
| 2026-02-12 | St Public Notif requested | state |
| 2025-12-29 | St Violation/Reminder Notice | state |
| 2025-07-01 | St Compliance achieved | state |
| 2024-10-15 | St Compliance achieved | state |
| 2024-09-19 | St Compliance achieved 2024 samplereport date BJK |
state |
| 2024-07-17 | St Violation/Reminder Notice | state |
| 2024-07-17 | St Public Notif requested | state |
| 2024-02-05 | St Violation/Reminder Notice | state |
| 2024-02-05 | St Public Notif requested | state |
| 2023-11-03 | St Violation/Reminder Notice | state |
| 2023-11-03 | St Public Notif requested | state |
| 2023-02-06 | St Compliance achieved | state |
| 2023-01-30 | St Public Notif requested | state |
| 2023-01-30 | St Violation/Reminder Notice | state |
| 2022-06-24 | St Compliance achieved | state |
| 2022-06-24 | St Public Notif received | state |
| 2021-11-18 | St Compliance achieved Did not exceed MCL in Q4 |
state |
| 2021-11-10 | St Violation/Reminder Notice | state |
20 most recent of 22; the rest are on the ECHO report.
Lead and copper
The latest 90th-percentile lead result is 0.0 mg/L (sampling period ending 2025-12-31) against an action level of 0.015 mg/L, below it. 7 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 Hesperus, Colorado?
La Plata West Water Authority is the public water system serving 354 people in La Plata County, from purchased surface water. Its EPA public water system id is CO0134466.
Where does La Plata West Water Authority get its water?
La Plata West Water Authority reports purchased surface water as its primary source. EPA lists its source facilities as PURCHASED WATER FROM CO0134530 LAKE DURA.
Does La Plata West Water Authority have any drinking water violations?
EPA's compliance record shows no open health-based violations for La Plata West Water Authority at the last monthly fetch. Older and non-health-based entries, if any, are listed on this page.
Every provider in La Plata 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 →