Hydrohistorian
Central Weld County Water District
Serves Platteville, Kersey, Firestone, Dacono, Gilcrest, Frederick, Evans.
Its service area also reaches South Platte: Greeley to Balzac (26.0%), St. Vrain Creek (8.0%), Big Thompson River (0.0%).
Boundary traced from IRE. About 434 km².
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| MASTER METER CONNECTION 401 | Consecutive connection (purchased) | Surface water · from CARTER LAKE FILTER PLANT |
| MASTER METER CONNECTION 402 | Consecutive connection (purchased) | Surface water · from CARTER LAKE FILTER PLANT |
| BERTHOUD MASTER METER CONNECTION | Consecutive connection (purchased) | Surface water · from BERTHOUD TOWN OF |
| LEFT HAND MASTER METER COUNTY RD 12 | Consecutive connection (purchased) | Surface water · from LEFT HAND WD |
| LEFT HAND MASTER METER COUNTY RD 6 | Consecutive connection (purchased) | Surface water · from LEFT HAND WD |
| PUR CARTER LAKE 135476 SW | Consecutive connection (purchased) | Surface water · from CARTER LAKE FILTER PLANT |
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 CARTER LAKE FILTER PLANT, BERTHOUD TOWN OF, LEFT HAND WD.
Sells water to 12 systems: LEFT HAND WD, ARISTOCRAT RANCHETTE WATER PROJECT, DACONO CITY OF, GILCREST TOWN OF, JOHNSTOWN TOWN OF, KERSEY WD, LA SALLE TOWN OF, FIRESTONE TOWN OF, MILLIKEN TOWN OF, PLATTEVILLE TOWN OF, PRAIRIE GREENS MHP, MCDONALD FARMS ENTERPRISES INC.
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 0 of the last 12 quarters.
No health-based or open violation on the federal record for this system.
What the regulator did about it
2 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 |
|---|---|---|
| 2021-07-19 | St Compliance achieved | state |
| 2021-06-10 | St Violation/Reminder Notice | state |
No lead or copper 90th-percentile result on the federal record for this system.
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 ↗
7 samples, 120 results, 2025-01-08 to 2025-12-03. No PFAS was detected at the reporting limits; lithium was not detected.
| Contaminant | Results | Detected | Highest, µg/L | Reporting limit |
|---|---|---|---|---|
| HFPO-DA | 4 | 0 | < 0.005 | 0.005 |
| PFHxS | 4 | 0 | < 0.003 | 0.003 |
| PFNA | 4 | 0 | < 0.004 | 0.004 |
| PFOA | 4 | 0 | < 0.004 | 0.004 |
| PFOS | 4 | 0 | < 0.004 | 0.004 |
| lithium | 4 | 0 | < 9.0 | 9.0 |
Rows shown: every detected contaminant plus the regulated PFAS and lithium; the rest were below their reporting limits. These are UCMR monitoring samples, not compliance samples. EPA's April 2024 rule set 4.0 ng/L (0.004 µg/L) for PFOA and PFOS, the same as UCMR 5's reporting limit, so any detection of either is at or above it; the rule's compliance date and its other limits have been under revision since 2025 and are not applied here. State PFAS sampling is on CDPHE's pages ↗.
Common questions
Who provides drinking water in Greeley, Colorado?
Central Weld County Water District is the public water system serving 7,662 people in Weld County, from purchased surface water. Its EPA public water system id is CO0162122.
Where does Central Weld County Water District get its water?
Central Weld County Water District reports purchased surface water as its primary source. EPA lists its source facilities as MASTER METER CONNECTION 401, MASTER METER CONNECTION 402, BERTHOUD MASTER METER CONNECTION, LEFT HAND MASTER METER COUNTY RD 12.
Does Central Weld County Water District have any drinking water violations?
EPA's compliance record shows no open health-based violations for Central Weld County Water District 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 Weld 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 →