Hydrohistorian
Pine Brook Hills Water District
Serves Pine Brook Hill.
Boundary traced from IRE. About 5 km².
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| FOUR MILE CREEK | Intake | Surface water |
| PINE BROOK RAW WATER RESERVOIR | Reservoir | Surface water |
| TWO MILE | 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
1 structure on DWR's record names this system as its contact (1). 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 |
|---|---|---|---|---|
| PINE BROOK RES 0603367 | RESERVOIR | TWO MILE CREEK | Boulder Creek | contact: PINE BROOK WATER DISTRICT (DE HAAS, BOB) |
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 0.0 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 ↗
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 Boulder, Colorado?
Pine Brook Hills Water District is the public water system serving 1,100 people in Boulder County, from surface water. Its EPA public water system id is CO0107610.
Where does Pine Brook Hills Water District get its water?
Pine Brook Hills Water District reports surface water as its primary source. EPA lists its source facilities as FOUR MILE CREEK, PINE BROOK RAW WATER RESERVOIR, TWO MILE.
Does Pine Brook Hills Water District have any drinking water violations?
EPA's compliance record shows no open health-based violations for Pine Brook Hills 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 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 →