Hydrohistorian
Walden Water & Sanitation District
Modelled boundary. EPA estimated this service area (Random Forest) rather than tracing a utility-supplied map; treat the edge as approximate. About 1 km².
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| WELL NO 1 WEST WELL | Well | Groundwater |
| WELL NO 2 PONDVIEW WELL | Well | Groundwater |
| WELL NO 3 WELL HOUSE | Well | Groundwater |
| WELL NO 4 SOUTH WELL | Well | Groundwater |
| WELL NO 5 PITCH PLACE WELL | Well | Groundwater |
| WELL NO 6 DAWSON WELL | Well | Groundwater |
| WELL NO 7 DENVER WELL | Well | Groundwater |
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 ↗
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 1 of the last 12 quarters. In violation for, in EPA's words: 4010=Combined Radium (-226 and -228).
No health-based or open violation on the federal record for this system.
What the regulator did about it
33 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 |
|---|---|---|
| 2025-06-29 | St Public Notif received Tier 3 PN for 2022 R540 vio and 4Q2024 4010 M&R vio achieved within CCR distributed 06/02/25 and submitted with COD on 06/29/25 (lfra 06/30/25); |
state |
| 2025-02-13 | St Compliance achieved FTM 4010 in 4Q2024 RTC though 1Q2025 sample collected 02/13/25 reported 03/14/25 (lfra 05/05/25); |
state |
| 2025-01-23 | St Violation/Reminder Notice | state |
| 2025-01-23 | St Public Notif requested | state |
| 2021-11-10 | St Violation/Reminder Notice | state |
| 2021-11-10 | St Public Notif requested | state |
| 2021-10-10 | St Compliance achieved System distributed consumer notice on time, but submitted to the Department late on 10/10/2021. hpo 11/10/2021 |
state |
| 2020-10-21 | St Violation/Reminder Notice | state |
| 2020-10-21 | St Public Notif requested | state |
| 2020-10-21 | St Compliance achieved System self reported late distribution violation. hpo 10/21/2020 |
state |
| 2020-10-14 | St Compliance achieved System collected required sample in 2020. hpo 11/6/2020 |
state |
| 2020-01-02 | St Compliance achieved System collected next required routine LCR samples. hpo 2/24/2020 |
state |
| 2019-10-29 | St Violation/Reminder Notice | state |
| 2019-10-29 | St Public Notif requested | state |
| 2019-08-02 | St Violation/Reminder Notice | state |
| 2019-08-02 | St Public Notif requested | state |
| 2018-07-10 | St Public Notif received Tier 3 PN included as part of CCR. hpo 7/10/2018 |
state |
| 2018-06-01 | St Compliance achieved Lead consumer notice and cert of delivery submitted 6/1/2018. Notice was distributed on 8/4/2017. hpo 6/1/2018 |
state |
| 2017-10-19 | St Violation/Reminder Notice | state |
| 2017-10-19 | St Public Notif requested | state |
20 most recent of 33; the rest are on the ECHO report.
Lead and copper
The latest 90th-percentile lead result is 0.0 mg/L (sampling period ending 2024-12-31) against an action level of 0.015 mg/L, below it. Copper 1.43 mg/L against 1.3 mg/L, above it. 15 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 Monument, Colorado?
Walden Water & Sanitation District is the public water system serving 1,500 people in El Paso County, from groundwater. Its EPA public water system id is CO0121850.
Where does Walden Water & Sanitation District get its water?
Walden Water & Sanitation District reports groundwater as its primary source. EPA lists its source facilities as WELL NO 1 WEST WELL, WELL NO 2 PONDVIEW WELL, WELL NO 3 WELL HOUSE, WELL NO 4 SOUTH WELL.
Does Walden Water & Sanitation District have any drinking water violations?
EPA's compliance record shows no open health-based violations for Walden Water & Sanitation District at the last monthly fetch. Older and non-health-based entries, if any, are listed on this page.
Every provider in El Paso 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 →