Hydrohistorian
Spring Valley Mutual Water Association
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 |
|---|---|---|
| WELL LARGE | Well | Groundwater |
| NEW SMALL 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 2026-10-06 · matched on DWR's recorded contact or an EPA intake name; verify on the dossier
1 structure on DWR's record names this system as its contact (1). A match says who DWR lists, not who owns the water: a ditch company can own the headgate while the system owns shares, and a consultant can be the contact. The dossier holds the decree.
| Structure | Type | Source | District | Matched on |
|---|---|---|---|---|
| SPRING VALLEY MUTUAL WATER ASSN AUG 0602530 | AUGMENTATION/REPLACEMENT PLAN | UNDEFINED | Boulder Creek | contact: SPRING VALLEY MUTUAL WATER ASSOCIATION (HELD, J MICHAEL) |
Compliance record
Source Register of another agency · fetched 2026-10-07 · verify at EPA ECHO ↗
Nothing open today, but 2 health-based violations appear on the federal record historically. The history is below.
EPA's own summary: violations in 1 of the last 12 quarters.
What happened
All 2 violation records on file, grouped into the 1 distinct thing EPA's codes describe. Dates are the compliance period the violation is filed against.
Rule: Lead and Copper Rule -- corrosion of household plumbing.
Every violation record, as filed (2 of 2)
| Compliance period | What | About | Kind | Status | Measured |
|---|---|---|---|---|---|
| 2018-12-27 | OCCT/SOWT Study/Recommendation | Lead and Copper Rule | health-based | returned to compliance (2019-04-29) | |
| 2018-02-08 | OCCT/SOWT Study/Recommendation | Lead and Copper Rule | health-based | returned to compliance (2018-12-07) |
What the regulator did about it
19 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 |
|---|---|---|
| 2024-03-17 | St Public Notif received Included Tier 3 PN in 2023 CCR - znk 03/21/2024 |
state |
| 2023-07-24 | St Compliance achieved SOXing: the system submitted CCR and COD on 7/24/2023. MM 7/25/2023 |
state |
| 2023-07-21 | St Violation/Reminder Notice | state |
| 2023-07-21 | St Public Notif requested | state |
| 2020-02-18 | St Boil Water Order | state |
| 2019-05-16 | St Public Notif received | state |
| 2019-04-29 | St Compliance achieved | state |
| 2019-01-16 | St Violation/Reminder Notice | state |
| 2019-01-16 | St Public Notif requested | state |
| 2018-12-18 | St Violation/Reminder Notice | state |
| 2018-12-07 | St Compliance achieved | state |
| 2018-12-07 | St Compliance achieved | state |
| 2018-12-07 | St Public Notif received | state |
| 2018-09-05 | St Boil Water Order BWA |
state |
| 2018-08-23 | St Compliance achieved WQPs collected for 2Q ALE. JD, 8/23/18; |
state |
| 2018-07-30 | St Violation/Reminder Notice | state |
| 2018-07-30 | St Public Notif requested | state |
| 2018-07-30 | St Violation/Reminder Notice | state |
| 2018-07-30 | St Public Notif requested | state |
Lead and copper
The latest 90th-percentile lead result is 0.0 mg/L (sampling period ending 2026-12-31) against an action level of 0.015 mg/L, below it. Copper 2.26 mg/L against 1.3 mg/L, above it. 18 results on file, 1 lead result over the action level all time.
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 Boulder, Colorado?
Spring Valley Mutual Water Association is the public water system serving 100 people in Boulder County, from groundwater. Its EPA public water system id is CO0107719.
Where does Spring Valley Mutual Water Association get its water?
Spring Valley Mutual Water Association reports groundwater as its primary source. EPA lists its source facilities as WELL LARGE, NEW SMALL WELL.
Does Spring Valley Mutual Water Association have any drinking water violations?
EPA's compliance record shows no open health-based violations for Spring Valley Mutual Water Association at the last monthly fetch. Older and non-health-based entries, if any, are listed on this page.
Every provider in Boulder 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 →