No health-based violations on EPA record since 2016.
Serves about 1,626 people (540 connections) with surface water from its own intake, and buys water from Montezuma WC.
From EPA's record for CO0142400. PurityMap is independent of Town of Dolores.
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No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2023 to December 2023.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 29 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Above the referenced health-based guidance value | 2023-01-09 to 2023-10-09 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-09 to 2023-10-09 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-09 to 2023-10-09 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-09 to 2023-10-09 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-09 to 2023-10-09 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-18 | UCMR5 Analytical Results: DOLORES TOWN OF (CO0142400) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →Town of Dolores's phone number on EPA record is 970-882-7720. Its mailing address is PO BOX 630, DOLORES, CO 81323.
According to EPA's record, Town of Dolores uses surface water from its own intake, and buys water from Montezuma WC.
No health-based violations on EPA record since 2016. EPA also lists 3 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Town of Dolores's latest lead and copper round, which ended in December 2025, was 2.3 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Town of Dolores. Its phone number on EPA record is 970-882-7720. Its mailing address on EPA record is PO BOX 630, DOLORES, CO 81323. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.