Hydrohistorian
Chicosa Water Users Association
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| PURCHASE FROM TRINIDAD CO0136800 | Consecutive connection (purchased) | Surface water · from TRINIDAD CITY OF |
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 TRINIDAD 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
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 2026-09-09 · verify at EPA ECHO ↗
1 violation open now, none health-based. These are monitoring, reporting or notice requirements — a sample not taken, or a result not filed on time. They are real obligations, but they are not a finding about the water itself.
EPA's own summary: violations in 2 of the last 12 quarters. In violation for, in EPA's words: 5000=Lead and Copper Rule. Currently: 5000=Lead and Copper Rule.
What happened
All 2 violation records on file, grouped into the 2 distinct things EPA's codes describe. Dates are the compliance period the violation is filed against.
Rule: Lead and Copper Rule -- corrosion of household plumbing.
Rule: Stage 1 Disinfectants and Disinfection Byproducts Rule.
Every violation record, as filed (2 of 2)
| Compliance period | What | About | Kind | Status | Measured |
|---|---|---|---|---|---|
| 2026-01-01 | Lead Consumer Notice | Lead and Copper Rule | monitoring and reporting | open | |
| 2018-04-30 | Treatment Technique No Certif. Operator | DBP Stage 1 | health-based | returned to compliance (2018-08-06) |
What the regulator did about it
35 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 |
|---|---|---|
| 2026-01-06 | St Violation/Reminder Notice | state |
| 2026-01-06 | St Public Notif requested | state |
| 2022-08-28 | St Compliance achieved SOX routine LCR monitoring performed 8/28/2022 FCL |
state |
| 2022-06-21 | St Compliance achieved Original attempt for 2022 needed to include wholesalers CCR. PWS re submitted including this information Closed 2021 CCR schedule and SOX'd violation(s) FCL 6/28/2022. |
state |
| 2021-10-26 | St Compliance achieved LCR consumer notice completed and accurate received 10/26/2021 FCL 6/15/2022 |
state |
| 2021-10-22 | St Violation/Reminder Notice | state |
| 2021-10-22 | St Public Notif requested | state |
| 2021-08-09 | St Violation/Reminder Notice | state |
| 2021-08-09 | St Public Notif requested | state |
| 2021-01-06 | St Violation/Reminder Notice | state |
| 2021-01-06 | St Public Notif requested | state |
| 2020-04-23 | St Violation/Reminder Notice | state |
| 2020-04-23 | St Public Notif requested | state |
| 2019-05-28 | St Compliance achieved systems completed COD. KLM |
state |
| 2019-05-13 | St Violation/Reminder Notice | state |
| 2019-05-13 | St Public Notif requested | state |
| 2018-10-12 | St Compliance achieved LCR samples submitted to state 10/12/2018 KLM |
state |
| 2018-09-24 | St Public Notif received | state |
| 2018-09-21 | St Compliance achieved PN for failure to have an operator in May 2018 was completed 9/21/2018 and proof of PN 9/24/2018. Violation SOX. KLM |
state |
| 2018-08-06 | St Compliance achieved | state |
20 most recent of 35; the rest are on the ECHO report.
Lead and copper
The latest 90th-percentile lead result is 0.002 mg/L (sampling period ending 2025-12-31) against an action level of 0.015 mg/L, below it. 9 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 Trinidad, Colorado?
Chicosa Water Users Association is the public water system serving 40 people, from purchased surface water. Its EPA public water system id is CO0136175.
Where does Chicosa Water Users Association get its water?
Chicosa Water Users Association reports purchased surface water as its primary source. EPA lists its source facilities as PURCHASE FROM TRINIDAD CO0136800.
Does Chicosa Water Users Association have any drinking water violations?
EPA's compliance record shows no open health-based violations for Chicosa Water Users Association at the last monthly fetch. Older and non-health-based entries, if any, are listed on this page.
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 →