Hydrohistorian
Stonegate Metropolitan District
Serves Stonegate.
Boundary traced from Douglas County. About 4 km².
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| WELL TDK 5 | Well | Groundwater |
| WELL TK 13 | Well | Groundwater |
| WELL LFH 3 | Well | Groundwater |
| WELL KA19 | Well | Groundwater |
| WELL KA15 | Well | Groundwater |
| WELL KA20 | Well | Groundwater |
| WELL CA NO 1R | Well | Groundwater |
| WELL CA NO 2R | Well | Groundwater |
| WELL KA17 | Well | Groundwater |
| WELL KA18 | Well | Groundwater |
| WELL LFH1 | Well | Groundwater |
| WELL LFH2 | Well | Groundwater |
| WELL KA16 | Well | Groundwater |
| PURCHASED FROM WISE CO0103843 | Consecutive connection (purchased) | Surface water · from WISE PROJECT |
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 WISE PROJECT.
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
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 2026-10-07 · 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
6 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 |
|---|---|---|
| 2021-11-09 | St Compliance achieved System sampled in Aug 2021, eligible to SOX, jlm. |
state |
| 2020-11-04 | St Violation/Reminder Notice | state |
| 2020-11-04 | St Public Notif requested | state |
| 2017-11-22 | St Compliance achieved | state |
| 2017-09-28 | St Violation/Reminder Notice | state |
| 2017-09-28 | St Public Notif requested | state |
Lead and copper
The latest 90th-percentile lead result is 0.002 mg/L (sampling period ending 2026-06-30) against an action level of 0.015 mg/L, below it. 19 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 ↗
4 samples, 120 results, 2023-07-18 to 2024-08-26. 6 of the 29 PFAS were detected at least once; lithium was measured up to 23.2 µg/L (no federal limit). PFOA measured up to 0.0056 µg/L, at or above EPA's 2024 limit of 0.004 µg/L; PFOS measured up to 0.0051 µg/L, at or above EPA's 2024 limit of 0.004 µg/L.
| Contaminant | Results | Detected | Highest, µg/L | Reporting limit |
|---|---|---|---|---|
| HFPO-DA | 4 | 0 | < 0.005 | 0.005 |
| PFBS | 4 | 1 | 0.0039 | 0.003 |
| PFHpA | 4 | 1 | 0.0031 | 0.003 |
| PFHxA | 4 | 1 | 0.0038 | 0.003 |
| PFHxS | 4 | 0 | < 0.003 | 0.003 |
| PFNA | 4 | 0 | < 0.004 | 0.004 |
| PFOA | 4 | 1 | 0.0056 (≥ 0.004 MCL) | 0.004 |
| PFOS | 4 | 1 | 0.0051 (≥ 0.004 MCL) | 0.004 |
| PFPeA | 4 | 1 | 0.0037 | 0.003 |
| lithium | 4 | 4 | 23.2 | 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 Parker, Colorado?
Stonegate Metropolitan District is the public water system serving 15,295 people in Douglas County, from purchased surface water. Its EPA public water system id is CO0118076.
Where does Stonegate Metropolitan District get its water?
Stonegate Metropolitan District reports purchased surface water as its primary source. EPA lists its source facilities as WELL TDK 5, WELL TK 13, WELL LFH 3, WELL KA19.
Does Stonegate Metropolitan District have any drinking water violations?
EPA's compliance record shows no open health-based violations for Stonegate Metropolitan 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 Douglas 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 →