Water report · not indexed
What is in the water at 81067
3 public water systems serve this ZIP code in the federal records. Everything below comes from EPA monitoring data, and everything missing is named.
PATTERSON VALLEY WC
PWSID CO0145540 · CO
PFAS and lithium
1 compound detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 2 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| lithium | 310 µg/L | 2 | 9/9/2024 |
A detection is a measurement, not a violation and not a health finding. EPA states that UCMR 5 results do not indicate compliance or non-compliance with any limit.
Health-based violations
72 open health-based violation(s) recorded in SDWIS and not yet returned to compliance.
- MCL · contaminant code 4000 · began 2016-01-01
- MCL · contaminant code 4010 · began 2016-01-01
- MCL · contaminant code 4010 · began 2017-01-01
- MCL · contaminant code 4000 · began 2017-01-01
- MCL · contaminant code 4000 · began 2018-01-01
- MCL · contaminant code 4000 · began 2018-04-01
- MCL · contaminant code 4010 · began 2018-01-01
- MCL · contaminant code 4010 · began 2018-04-01
Hardness
No hardness measurement. Hardness is measured at environmental monitoring stations, and none fell inside this system’s service area. That is a gap in where monitoring happens, not a finding about the water.
ROCKY FORD CITY OF
PWSID CO0145600 · CO
PFAS and lithium
4 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 7 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| lithium | 48 µg/L | 2 | 9/9/2025 |
| PFBS | 0.0085 µg/L | 2 | 9/9/2025 |
| PFHxS | 0.006 µg/L | 2 | 9/9/2025 |
| PFOS | 0.0041 µg/L | 1 | 9/9/2025 |
A detection is a measurement, not a violation and not a health finding. EPA states that UCMR 5 results do not indicate compliance or non-compliance with any limit.
Health-based violations
No open health-based violation on record. This covers MCL, treatment technique and MRDL violations in SDWIS that have not been returned to compliance. It excludes monitoring and reporting violations, which are the large majority nationally, so this is not “no violations”, and SDWIS completeness varies by state.
Hardness
No hardness measurement. Hardness is measured at environmental monitoring stations, and none fell inside this system’s service area. That is a gap in where monitoring happens, not a finding about the water.
NORTH HOLBROOK WC
PWSID CO0145630 · CO · serves 58 people · service area inferred by a model, not supplied by the state
PFAS and lithium
1 compound detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 2 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| lithium | 180 µg/L | 2 | 8/4/2025 |
A detection is a measurement, not a violation and not a health finding. EPA states that UCMR 5 results do not indicate compliance or non-compliance with any limit.
Health-based violations
35 open health-based violation(s) recorded in SDWIS and not yet returned to compliance.
- MCL · contaminant code 4010 · began 2016-01-01
- MCL · contaminant code 4010 · began 2017-01-01
- MCL · contaminant code 4010 · began 2018-01-01
- MCL · contaminant code 4010 · began 2018-04-01
- MCL · contaminant code 4010 · began 2018-10-01
- MCL · contaminant code 4010 · began 2018-07-01
- MCL · contaminant code 4010 · began 2019-01-01
- MCL · contaminant code 4010 · began 2019-04-01
Hardness
Too few readings to state a hardness. 2 station(s), 3 result(s). Below two stations and five results this page will not state a number: a median of two readings from one creek is not your water.
What this report cannot tell you
Every figure describes water at a sampling point: a treatment plant, an entry point to the distribution system, or a monitoring station. None of it describes water arriving at your tap. Plumbing between the two can add lead and copper, and if your home was built before 1986 a test kit tells you something no federal dataset can.
Sources: EPA UCMR 5 occurrence (final release, frozen July 2026) · EPA SDWIS health-based violations · USGS and state monitoring via the Water Quality Portal · EPA Public Water System Service Area Boundaries v3. Compiled 2026-09-01 · 1 of 3 service areas here are modelled.