Hydrohistorian
City of Northglenn
Serves Northglenn.
Boundary traced from IRE. About 17 km².
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| STANDLEY 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 1 system: WESTMINSTER CITY OF.
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
8 structures on DWR's record name this system as their contact (8). 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 |
|---|---|---|---|---|
| BERTHOUD PASS RELEASE STRUCTURE 0704625 | OTHER | HOOP CREEK | Clear Creek | contact: NORTHGLENN, CITY OF |
| CHURCH DITCH 0700540 | DITCH | CLEAR CREEK | Clear Creek | contact: NORTHGLENN, CITY OF |
| CHURCH DITCH RALSTON CREEK DIVERSION 0700942 | DITCH | RALSTON CREEK | Clear Creek | contact: NORTHGLENN, CITY OF |
| NORTHGLENN AUG 0202520 | AUGMENTATION/REPLACEMENT PLAN | UNDEFINED | South Platte: Denver Gage to Greeley | contact: CITY OF NORTHGLENN (MCCLURE, RYAN) |
| NORTHGLENN AUG BIG DRY ABOVE GERMAN DITCH IMPACT R 0202364 | REACH (AGGREGATING) | BIG DRY CREEK | South Platte: Denver Gage to Greeley | contact: NORTHGLENN, CITY OF |
| NORTHGLENN AUG BIG DRY BELOW GERMAN DITCH IMPACT R 0202381 | REACH (AGGREGATING) | BIG DRY CREEK | South Platte: Denver Gage to Greeley | contact: NORTHGLENN, CITY OF |
| NORTHGLENN AUG SOUTH PLATTE IMPACT REACH 0202283 | REACH (AGGREGATING) | SOUTH PLATTE RIVER | South Platte: Denver Gage to Greeley | contact: NORTHGLENN, CITY OF |
| WEBSTER RES 0704468 | RESERVOIR | CLEAR CREEK | Clear Creek | contact: NORTHGLENN, CITY OF |
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.
No enforcement action against this system on the federal record.
Lead and copper
The latest 90th-percentile lead result is 0.0017 mg/L (sampling period ending 2025-12-31) against an action level of 0.015 mg/L, below it. 8 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 ↗
4 samples, 120 results, 2024-11-19 to 2025-08-19. No PFAS was detected at the reporting limits; lithium was measured up to 19.8 µg/L (no federal limit).
| 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 | 4 | 19.8 | 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 Northglenn, Colorado?
The City of Northglenn is the public water system serving 48,927 people in Adams County, from surface water. Its EPA public water system id is CO0101115.
Where does the City of Northglenn get its water?
The City of Northglenn reports surface water as its primary source. EPA lists its source facilities as STANDLEY LAKE.
Does the City of Northglenn have any drinking water violations?
EPA's compliance record shows no open health-based violations for the City of Northglenn 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 Adams 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 →