Hydrohistorian
Boundary traced. About 35 km².
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| BEEBEE WELL A | Well | Groundwater under the influence of surface water |
| BEEBEE WELL B | Well | Groundwater under the influence of surface water |
| BEEBEE WELL C | Well | Groundwater under the influence of surface water |
| WELL 18 | Well | Groundwater |
| WELL 11 | Well | Groundwater |
| WELL 12 | Well | Groundwater |
| WELL 13 | Well | Groundwater |
| WELL 17 | Well | Groundwater |
| WELL 7R | Well | Groundwater |
| PURCHASED WATER FROM THORNTON | Consecutive connection (purchased) | Surface water · from THORNTON CITY OF |
| PURCHASED FROM DENVER (CO0116001) | Consecutive connection (purchased) | Surface water · from DENVER WATER BOARD |
| BEEBEE WELL D | Well | Groundwater under the influence of 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
Buys water from THORNTON CITY OF, DENVER WATER BOARD.
Sells water to 1 system: BRIGHTON VILLAGE LLC.
Compliance record
Source Register of another agency · fetched 2026-09-09 · verify at EPA ECHO ↗
EPA's summary: violations in 1 of the last 12 quarters; not a serious violator. Contaminants in violation in the last three years, in EPA's words: 2950=TTHM.
1 health-based violation on the federal record all time, 0 violations open today. Most recent health-based: Maximum contaminant level exceeded, compliance period from 2023-04-01, returned to compliance 2023-07-25.
| Period | Kind | Health-based | Status | Measured | Codes |
|---|---|---|---|---|---|
| 2023-04-01 – 2023-06-30 | Maximum contaminant level exceeded | yes | returned to compliance (2023-07-25) | 0.0939 MG/L (limit 0.08) | v02 c2950 r220 |
Lead and copper: the latest 90th-percentile lead result is 0.002 mg/L (sampling period ending 2023-12-31) against an action level of 0.015 mg/L; 9 results on file.
SDWIS federal reporting carries violations and lead/copper percentiles only; nitrate, disinfection by-product and PFAS sample results are not in it. Codes are EPA's (violation, contaminant, rule); the ECHO report expands them.
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 ↗
16 samples, 480 results, 2024-01-17 to 2025-08-19. 7 of the 29 PFAS were detected at least once; lithium was measured up to 31.9 µg/L (no federal limit). PFOA measured up to 0.0053 µg/L, at or above EPA's 2024 limit of 0.004 µg/L; PFOS measured up to 0.0106 µg/L, at or above EPA's 2024 limit of 0.004 µg/L.
| Contaminant | Results | Detected | Highest, µg/L | Reporting limit |
|---|---|---|---|---|
| HFPO-DA | 16 | 0 | < 0.005 | 0.005 |
| PFBA | 16 | 12 | 0.0106 | 0.005 |
| PFBS | 16 | 12 | 0.0074 | 0.003 |
| PFHxA | 16 | 16 | 0.0094 | 0.003 |
| PFHxS | 16 | 9 | 0.0071 | 0.003 |
| PFNA | 16 | 0 | < 0.004 | 0.004 |
| PFOA | 16 | 4 | 0.0053 (≥ 0.004 MCL) | 0.004 |
| PFOS | 16 | 8 | 0.0106 (≥ 0.004 MCL) | 0.004 |
| PFPeA | 16 | 16 | 0.0193 | 0.003 |
| lithium | 16 | 16 | 31.9 | 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 ↗.
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 →