Hydrohistorian
City of Fort Lupton
Serves Fort Lupton.
Modelled boundary. EPA estimated this service area (Decision Tree) rather than tracing a utility-supplied map; treat the edge as approximate. About 8 km².
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| TERMINAL RESERVOIR | Intake | Surface water |
| CARTER 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.
Wholesale connections
Sells water to 2 systems: COPPER KEY VILLAGE MHP, HUDSON 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
13 structures on DWR's record name this system as their contact (13). 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 |
|---|---|---|---|---|
| FT LUPTON & THERMO AUG 0202592 | AUGMENTATION/REPLACEMENT PLAN | UNDEFINED | South Platte: Denver Gage to Greeley | contact: CITY OF FORT LUPTON (HANES, CLAUDE) |
| FT LUPTON & THERMO IMPACT REACH 0202241 | REACH | SOUTH PLATTE RIVER | South Platte: Denver Gage to Greeley | contact: CITY OF FORT LUPTON (HANES, CLAUDE) |
| FT LUPTON W 1-19493-R-R 0206248 | WELL | GROUNDWATER: SOUTH PLATTE RIVER | South Platte: Denver Gage to Greeley | contact: CITY OF FORT LUPTON (HANES, CLAUDE) |
| FT LUPTON W 10-10030-F-R 0206249 | WELL | GROUNDWATER: SOUTH PLATTE RIVER | South Platte: Denver Gage to Greeley | contact: CITY OF FORT LUPTON (HANES, CLAUDE) |
| FT LUPTON W 13-15273-R 0206252 | WELL | GROUNDWATER: SOUTH PLATTE RIVER | South Platte: Denver Gage to Greeley | contact: CITY OF FORT LUPTON (HANES, CLAUDE) |
| FT LUPTON W 3-19493-T-R 0206254 | WELL | GROUNDWATER: SOUTH PLATTE RIVER | South Platte: Denver Gage to Greeley | contact: CITY OF FORT LUPTON (HANES, CLAUDE) |
| FT LUPTON W 4-12626-R 0206255 | WELL | GROUNDWATER: SOUTH PLATTE RIVER | South Platte: Denver Gage to Greeley | contact: CITY OF FORT LUPTON |
| FT LUPTON W 5-20026-R 0206256 | WELL | GROUNDWATER: SOUTH PLATTE RIVER | South Platte: Denver Gage to Greeley | contact: CITY OF FORT LUPTON (HANES, CLAUDE) |
| FT LUPTON W 6-14807-R 0206257 | WELL | GROUNDWATER: SOUTH PLATTE RIVER | South Platte: Denver Gage to Greeley | contact: CITY OF FORT LUPTON (HANES, CLAUDE) |
| FT LUPTON W 7-6221-R 0206258 | WELL | GROUNDWATER: SOUTH PLATTE RIVER | South Platte: Denver Gage to Greeley | contact: CITY OF FORT LUPTON (HANES, CLAUDE) |
| PERRY WELL 1 0207609 | WELL | GROUNDWATER: SOUTH PLATTE RIVER | South Platte: Denver Gage to Greeley | contact: CITY OF FORT LUPTON (HANES, CLAUDE) |
| PERRY WELL 2 0207610 | WELL | GROUNDWATER: SOUTH PLATTE RIVER | South Platte: Denver Gage to Greeley | contact: CITY OF FORT LUPTON (HANES, CLAUDE) |
| TRAPP WELL 6588 0208385 | WELL | GROUNDWATER: SOUTH PLATTE RIVER | South Platte: Denver Gage to Greeley | contact: CITY OF FORT LUPTON (HANES, CLAUDE) |
Compliance record
Source Register of another agency · fetched 2026-10-07 · verify at EPA ECHO ↗
1 violation open now, none health-based. These are monitoring, reporting or notice requirements — a sample not taken, or a result not filed on time. They are real obligations, but they are not a finding about the water itself.
EPA's own summary: violations in 3 of the last 12 quarters, significant non-compliance in 2. In violation for, in EPA's words: 0200=Surface Water Treatment Rule; 0300=Interim Enhanced Surface Water Treatment Rule.
What happened
All 15 violation records on file, grouped into the 3 distinct things EPA's codes describe. Dates are the compliance period the violation is filed against.
EPA violation code 4H, contaminant 5200 — not in the code table this build carries.
Rule: Long Term 1 Enhanced Surface Water Treatment Rule.
Rule: Surface Water Treatment Rule -- filtration and disinfection.
Every violation record, as filed (12 of 15)
| Compliance period | What | About | Kind | Status | Measured |
|---|---|---|---|---|---|
| 2026-07-02 | code 4H | monitoring and reporting | open | ||
| 2023-09-01 – 2023-09-30 | Single Turbidity Exceed (Enhanced SWTR) | Ieswtr | health-based | returned to compliance (2023-12-03) | |
| 2023-08-01 – 2023-08-31 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2023-12-03) | |
| 2022-07-01 – 2022-07-31 | Single Turbidity Exceed (Enhanced SWTR) | Ieswtr | health-based | returned to compliance (2023-12-03) | |
| 2021-06-01 – 2021-06-30 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2021-08-18) | |
| 2019-12-01 – 2019-12-31 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2020-01-09) | |
| 2019-11-01 – 2019-11-30 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2020-01-09) | |
| 2019-10-01 – 2019-10-31 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2020-01-09) | |
| 2019-09-01 – 2019-09-30 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2020-01-09) | |
| 2019-08-01 – 2019-08-31 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2020-01-09) | |
| 2019-07-01 – 2019-07-31 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2020-01-09) | |
| 2019-06-01 – 2019-06-30 | Treatment Technique (SWTR and GWR) | SWTR | health-based | returned to compliance (2020-01-09) |
The remaining 3 are on the ECHO report.
What the regulator did about it
91 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 |
|---|---|---|
| 2026-07-30 | St Violation/Reminder Notice | state |
| 2026-07-30 | St Public Notif requested | state |
| 2024-04-05 | St Compliance achieved SOX 4/5/2024 March 2024 MOR submitted in accordance with the rule FCL |
state |
| 2024-03-19 | St Violation/Reminder Notice | state |
| 2024-03-19 | St Public Notif requested | state |
| 2024-02-12 | St Violation/Reminder Notice | state |
| 2024-02-12 | St Public Notif requested | state |
| 2023-12-06 | St Public Notif received | state |
| 2023-12-03 | St Compliance achieved SOX PWS submitted MOR in accordance with the Rule 12/12/2023 FCL |
state |
| 2023-11-21 | St Violation/Reminder Notice | state |
| 2023-11-21 | St Public Notif requested | state |
| 2023-11-21 | St Violation/Reminder Notice | state |
| 2023-11-21 | St Public Notif requested | state |
| 2023-10-18 | St Public Notif received | state |
| 2023-10-04 | St Violation/Reminder Notice | state |
| 2023-10-04 | St Public Notif requested | state |
| 2023-10-04 | St Violation/Reminder Notice | state |
| 2023-10-04 | St Public Notif requested | state |
| 2023-08-22 | St Public Notif received | state |
| 2023-08-22 | St Compliance achieved | state |
20 most recent of 91; the rest are on the ECHO report.
Lead and copper
The latest 90th-percentile lead result is 0.004 mg/L (sampling period ending 2025-12-31) against an action level of 0.015 mg/L, below it. 7 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 ↗
6 samples, 120 results, 2024-02-05 to 2025-01-07. 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 ↗.
What changed recently
Differences EPA's monthly federal record showed against the month before. A date in brackets is EPA's own; otherwise it is when this site first saw the change.
- Enforcement action: St Violation/Reminder Notice (2026-07-30)
- Enforcement action: St Public Notif requested (2026-07-30)
- New violation (2026-07-02)
Save this system to My Water and these changes appear there each time you visit.
Common questions
Who provides drinking water in Fort Lupton, Colorado?
The City of Fort Lupton is the public water system serving 12,099 people in Weld County, from surface water. Its EPA public water system id is CO0162291.
Where does the City of Fort Lupton get its water?
The City of Fort Lupton reports surface water as its primary source. EPA lists its source facilities as TERMINAL RESERVOIR, CARTER LAKE.
Does the City of Fort Lupton have any drinking water violations?
EPA's compliance record shows no open health-based violations for the City of Fort Lupton 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 2026-10-06; the compliance record above is EPA's own, fetched monthly, and the ECHO report carries the rest. Report a problem →