Hydrohistorian
Coalby Domestic Water Company
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| SPRING A | Well | Groundwater under the influence of surface water |
| SPRING NO 2 AKA SPRING B | Well | Groundwater under the influence of surface water |
| SPRING NO 3 AKA SPRING C | Well | Groundwater |
| SPRING NO 4 AKA SPRING D | Well | Groundwater |
| PURCHASED TREATED CEDAREDGE 115171 | Consecutive connection (purchased) | Surface water · from CEDAREDGE TOWN OF |
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 CEDAREDGE TOWN OF.
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
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 2026-10-07 · verify at EPA ECHO ↗
Nothing open today, but 22 health-based violations appear on the federal record historically. The history is below.
EPA's own summary: violations in 2 of the last 12 quarters. In violation for, in EPA's words: 0200=Surface Water Treatment Rule; 0999=Chlorine; 8000=Revised Total Coliform Rule. Currently: 8000=Revised Total Coliform Rule.
What happened
All 22 violation records on file, grouped into the 3 distinct things EPA's codes describe. Dates are the compliance period the violation is filed against.
Rule: Long Term 1 Enhanced Surface Water Treatment Rule.
Rule: Surface Water Treatment Rule -- filtration and disinfection.
Rule: Surface Water Treatment Rule -- filtration and disinfection.
Every violation record, as filed (12 of 22)
| Compliance period | What | About | Kind | Status | Measured |
|---|---|---|---|---|---|
| 2022-05-01 – 2022-05-31 | Monthly Turbidity Exceed (Enhanced SWTR) | Ieswtr | health-based | returned to compliance (2022-07-01) | |
| 2022-01-01 – 2022-01-31 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2022-03-16) | |
| 2017-02-01 – 2017-02-28 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2017-05-12) | |
| 2017-01-01 – 2017-01-31 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2017-05-12) | |
| 2016-12-01 – 2016-12-31 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2017-05-12) | |
| 2016-11-01 – 2016-11-30 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2017-05-12) | |
| 2016-10-01 – 2016-10-31 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2017-05-12) | |
| 2016-09-01 – 2016-09-30 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2017-05-12) | |
| 2016-08-01 – 2016-08-31 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2017-05-12) | |
| 2016-07-01 – 2016-07-31 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2017-05-12) | |
| 2016-06-01 – 2016-06-30 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2017-05-12) | |
| 2016-05-01 – 2016-05-31 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2017-05-12) |
The remaining 10 are on the ECHO report.
What the regulator did about it
169 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 |
|---|---|---|
| 2026-02-04 | St Compliance achieved | state |
| 2026-02-02 | St Violation/Reminder Notice | state |
| 2026-02-02 | St Public Notif requested | state |
| 2026-02-02 | St Violation/Reminder Notice | state |
| 2026-02-02 | St Public Notif requested | state |
| 2026-02-02 | St Violation/Reminder Notice | state |
| 2026-02-02 | St Public Notif requested | state |
| 2022-08-23 | St Compliance achieved System collected DBP sample. SOX. KLM |
state |
| 2022-07-05 | St Public Notif received | state |
| 2022-07-01 | St Compliance achieved submitted June 2022 MOR with Turb meeting limits. SOX. KLM |
state |
| 2022-06-13 | St Violation/Reminder Notice | state |
| 2022-06-13 | St Public Notif requested | state |
| 2022-06-10 | St Compliance achieved submitted data for 1st 6M 2022. KLM |
state |
| 2022-03-16 | St Compliance achieved violation SOX'd with Feb 2022 MOR met 3-16-22 |
state |
| 2022-03-05 | St Public Notif received | state |
| 2022-02-14 | St Violation/Reminder Notice | state |
| 2022-02-14 | St Public Notif requested | state |
| 2022-02-14 | St Violation/Reminder Notice | state |
| 2022-02-14 | St Public Notif requested | state |
| 2021-11-29 | St Compliance achieved system sampled VOCs on 11/29/2021. KLM |
state |
20 most recent of 169; 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. 6 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 Cedaredge, Colorado?
Coalby Domestic Water Company is the public water system serving 239 people in Delta County, from groundwater under the influence of surface water. Its EPA public water system id is CO0115185.
Where does Coalby Domestic Water Company get its water?
Coalby Domestic Water Company reports groundwater under the influence of surface water as its primary source. EPA lists its source facilities as SPRING A, SPRING NO 2 AKA SPRING B, SPRING NO 3 AKA SPRING C, SPRING NO 4 AKA SPRING D.
Does Coalby Domestic Water Company have any drinking water violations?
EPA's compliance record shows no open health-based violations for Coalby Domestic Water Company at the last monthly fetch. Older and non-health-based entries, if any, are listed on this page.
Every provider in Delta 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 →