Hydrohistorian
City of Walsenburg
Serves Walsenburg.
Modelled boundary. EPA estimated this service area (Random Forest) rather than tracing a utility-supplied map; treat the edge as approximate. About 5 km².
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| CUCHARA RIVER CITY LAKE | Intake | Surface water |
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 2026-09-09 · 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 health-based violation open now. A health-based violation means a measured level went over a federal limit, or a required treatment step was not carried out — not a missed form. What that means for anyone drinking the water depends on the contaminant and the dose; read EPA's own report and the system's Consumer Confidence Report rather than anything inferred here.
EPA's own summary: violations in 9 of the last 12 quarters. In violation for, in EPA's words: 0200=Surface Water Treatment Rule; 0300=Interim Enhanced Surface Water Treatment Rule; 5200=LEAD AND COPPER RULE REVISIONS; 7500=Public Notice. Currently: 5200=LEAD AND COPPER RULE REVISIONS; 7500=Public Notice.
What happened
All 25 violation records on file, grouped into the 7 distinct things EPA's codes describe. Dates are the compliance period the violation is filed against.
EPA violation code 2E, contaminant 5200 — not in the code table this build carries.
EPA violation code 4G, contaminant 5200 — not in the code table this build carries.
Rule: Long Term 1 Enhanced Surface Water Treatment Rule.
Rule: Stage 2 Disinfectants and Disinfection Byproducts Rule.
Rule: Surface Water Treatment Rule -- filtration and disinfection.
Rule: Surface Water Treatment Rule -- filtration and disinfection.
Rule: Groundwater Rule -- protecting wells from faecal contamination.
Every violation record, as filed (12 of 25)
| Compliance period | What | About | Kind | Status | Measured |
|---|---|---|---|---|---|
| 2024-10-17 | code 4G | monitoring and reporting | open | ||
| 2024-10-17 | code 2E | health-based | open | ||
| 2022-08-01 – 2022-08-31 | Monthly Turbidity Exceed (Enhanced SWTR) | Ieswtr | health-based | returned to compliance (2022-10-10) | |
| 2022-06-01 – 2022-06-30 | Monthly Turbidity Exceed (Enhanced SWTR) | Ieswtr | health-based | returned to compliance (2022-08-07) | |
| 2021-09-01 – 2021-09-30 | Monthly Turbidity Exceed (Enhanced SWTR) | Ieswtr | health-based | returned to compliance (2021-11-09) | |
| 2021-08-01 – 2021-08-31 | Monthly Turbidity Exceed (Enhanced SWTR) | Ieswtr | health-based | returned to compliance (2021-11-09) | |
| 2021-07-01 – 2021-07-31 | Monthly Turbidity Exceed (Enhanced SWTR) | Ieswtr | health-based | returned to compliance (2021-11-09) | |
| 2021-06-01 – 2021-06-30 | Monthly Turbidity Exceed (Enhanced SWTR) | Ieswtr | health-based | returned to compliance (2021-11-09) | |
| 2021-01-01 – 2021-01-31 | Monthly Turbidity Exceed (Enhanced SWTR) | Ieswtr | health-based | returned to compliance (2021-03-09) | |
| 2020-12-01 – 2020-12-31 | Monthly Turbidity Exceed (Enhanced SWTR) | Ieswtr | health-based | returned to compliance (2021-03-09) | |
| 2020-11-01 – 2020-11-30 | Monthly Turbidity Exceed (Enhanced SWTR) | Ieswtr | health-based | returned to compliance (2021-03-09) | |
| 2020-10-01 – 2020-10-31 | Monthly Turbidity Exceed (Enhanced SWTR) | Ieswtr | health-based | returned to compliance (2021-03-09) |
The remaining 13 are on the ECHO report.
What the regulator did about it
178 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 |
|---|---|---|
| 2026-01-29 | St Violation/Reminder Notice | state |
| 2026-01-22 | St Compliance achieved | state |
| 2026-01-08 | St Compliance achieved | state |
| 2025-12-12 | St Violation/Reminder Notice | state |
| 2025-12-12 | St Public Notif requested | state |
| 2025-12-12 | St Violation/Reminder Notice | state |
| 2025-12-12 | St Public Notif requested | state |
| 2025-12-03 | St Compliance achieved | state |
| 2025-09-30 | St Violation/Reminder Notice | state |
| 2025-09-04 | St Compliance achieved | state |
| 2025-07-18 | St Violation/Reminder Notice | state |
| 2025-06-11 | St Violation/Reminder Notice | state |
| 2025-06-11 | St Public Notif requested | state |
| 2025-05-15 | St Compliance achieved late submittal BJK |
state |
| 2025-05-02 | St Compliance achieved distributed PN |
state |
| 2025-04-29 | St Violation/Reminder Notice | state |
| 2025-04-29 | St Violation/Reminder Notice | state |
| 2025-02-20 | St Violation/Reminder Notice | state |
| 2025-02-03 | St Violation/Reminder Notice | state |
| 2024-12-05 | St Violation/Reminder Notice | state |
20 most recent of 178; the rest are on the ECHO report.
Lead and copper
The latest 90th-percentile lead result is 0.005 mg/L (sampling period ending 2025-12-31) against an action level of 0.015 mg/L, below it. 12 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 Walsenburg, Colorado?
The City of Walsenburg is the public water system serving 3,230 people in Huerfano County, from surface water. Its EPA public water system id is CO0128900.
Where does the City of Walsenburg get its water?
The City of Walsenburg reports surface water as its primary source. EPA lists its source facilities as CUCHARA RIVER CITY LAKE.
Does the City of Walsenburg have any drinking water violations?
EPA's compliance record shows no open health-based violations for the City of Walsenburg 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 Huerfano 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 →