Hydrohistorian
Town of Nederland
Serves Nederland.
Boundary traced from IRE. About 4 km².
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| MIDDLE BOULDER CREEK | 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.
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
2 structures on DWR's record name this system as their contact (2). 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 |
|---|---|---|---|---|
| NEDERLAND AUG 0602501 | AUGMENTATION/REPLACEMENT PLAN | UNDEFINED | Boulder Creek | contact: TOWN OF NEDERLAND (LADD, AARON) |
| NEDERLAND CITY WATER WORKS PIPELINE 0600546 | OTHER | MIDDLE BOULDER CREEK | Boulder Creek | contact: NEDERLAND, TOWN OF |
Compliance record
Source Register of another agency · fetched 2026-09-09 · verify at EPA ECHO ↗
Nothing open today, but 3 health-based violations appear on the federal record historically. The history is below.
EPA's own summary: violations in 0 of the last 12 quarters.
What happened
All 3 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 (3 of 3)
| Compliance period | What | About | Kind | Status | Measured |
|---|---|---|---|---|---|
| 2000-01-01 | Public Education | Lead and Copper Rule | health-based | returned to compliance (2000-12-20) | |
| 1999-01-01 | Public Education | Lead and Copper Rule | health-based | returned to compliance (2000-12-20) | |
| 1997-01-01 | Public Education | Lead and Copper Rule | health-based | returned to compliance (1997-12-31) |
What the regulator did about it
3 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 |
|---|---|---|
| 2022-01-05 | St Violation/Reminder Notice | state |
| 2022-01-05 | St Public Notif requested | state |
| 2022-01-05 | St Compliance achieved vio issued due to self-reported late distribution. Bob 5 Jan 22; |
state |
Lead and copper
The latest 90th-percentile lead result is 0.001 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 2026-09-09 · 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 Nederland, Colorado?
The Town of Nederland is the public water system serving 2,406 people in Boulder County, from surface water. Its EPA public water system id is CO0107538.
Where does the Town of Nederland get its water?
The Town of Nederland reports surface water as its primary source. EPA lists its source facilities as MIDDLE BOULDER CREEK.
Does the Town of Nederland have any drinking water violations?
EPA's compliance record shows no open health-based violations for the Town of Nederland 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 Boulder 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 →