PFOA
Not detected above reporting limit
- Sample date
- Reporting limit
- 0.004 µg/L
- Sample ID
- K2504105-001
Colorado
Water in Denver, CO
Denver County, Colorado · City overview · Page updated 2026-10-20
PFAS testing · samples through 2025-04-21
Limited coverage
Water summary
Where Denver gets its water
Denver Water is the likely provider for the mapped location in Denver. Check your utility bill to confirm service at your address. The sources below describe the supply network; they do not establish water quality at your tap.
- Likely water system
- Denver Water →
- Water sources
- Blue, Williams Fork, and Fraser river watersheds, South Platte basin and foothills collection
- Watershed
- Middle South Platte-Cherry Creek
Public drinking-water record
Drinking water in Denver
Denver Water is listed for this area. Check your utility bill to confirm who supplies your home. These are public water-system records, not a test of the tap water at your home.
PFAS testing in Denver’s drinking water
No PFAS detection above the reporting limit in these results. Most recent PFAS sample shown here: .
PFOS
Not detected above reporting limit
- Sample date
- Reporting limit
- 0.004 µg/L
- Sample ID
- K2504105-001
Selected latest compound samples from the published federal system record. Multiple sample points may share a date. A detection does not establish a violation. A non-detection does not mean PFAS-free. PFOA and PFOS limits and regulatory context are separate from these historical samples.
Lead and copper
Lead: 0.0031 mg/L, period ending 2025-12-31. These are system 90th-percentile results, not individual household concentrations.
EPA UCMR5 source and sampling program · EPA ECHO compliance and lead/copper records · Testing and source records for Denver Water
U.S. Drought Monitor ·
Drought around this place
This is the latest drought map in this publication, effective 2026-10-13; it is not a live report.
Denver County, Colorado: 100% of county area in D1 or worse; 100% in D0 or worse. D0 means abnormally dry. On 2026-10-06, D1 or worse covered 100%.
County area shares at or above each severity: D2 100% · D3 0.15% · D4 0%. These cumulative percentages overlap and must not be added. County conditions do not describe every point in a city or a drinking-water restriction.
Colorado drought and water context
Open the drought map and historical playback · U.S. Drought Monitor source
Loading the local water map…
Drought, streams, rainfall & wells
Latest water conditions
Read each measure with its date. Rainfall, streams and groundwater can change at different rates.
Drought
Severe droughtSevere drought
Severe drought affects part of the county; this is county context, not an exact city boundary.
Older report · 2026-10-13U.S. Drought Monitor
Published or effective 2026-10-13. Water Around last checked 2026-10-20T12:00:15.835637+00:00. This report may not describe conditions today.
Streamflow
Near seasonal rangeNear seasonal range
Flow at this gauge was within its usual range for the season.
Older report · 2026-10-19USGS daily mean discharge
Published or effective 2026-10-19. Water Around last checked 2026-10-20T11:59:36.282Z. This report may not describe conditions today.
Recent rainfall
2.095 inches in 30 days2.095 inches in 30 days
19% above the 1991–2020 station normal for this period.
Older report · 2026-09-01NOAA station observations
Published or effective 2026-09-01. Water Around last checked 2026-10-20T11:59:43.916Z. This report may not describe conditions today.
Groundwater
Method developingMonitoring is available
Measurements are available at nearby wells. An overall groundwater condition is not calculated from them.
5 nearby monitoring wellsYour public water system
Denver Water
The mapped location falls within this system’s EPA service area. Confirm service to your home with the utility.
Denver Water →CO0116001 · community
Local compliance cacheA local summary of reported violations is not available here. When federal records are available, you can read them in the drinking-water section above. Neither source is a live test of water at your tap.
Your watershed
Cherry Creek-South Platte River
A watershed is the land area where rain and streams drain toward a shared outlet. It helps explain natural water conditions, but it may not match the area supplying your tap.
- Local watershed
- Cherry Creek-South Platte River
- Broader basin
- Middle South Platte-Cherry Creek
Below ground
Groundwater near Denver
Aquifers can supply water; monitoring wells measure water levels at individual sites. One well does not describe an entire aquifer or your household well.
Groundwater sources
No aquifer source identified
The supply records do not name an aquifer. Groundwater may still be present.
Nearby monitoring
5 nearby monitoring wells
Detailed well pages are not available for these nearby sites yet.
Reading well data
What well measurements can tell you
A well’s water level does not tell us how much water an aquifer holds. Pumping totals alone do not show depletion, and a surface map does not show the aquifer’s full underground extent. To understand water quality in a private well, use tests from that well and local guidance.
Colorado water planning
Water planning in Denver
Explore the mountain watersheds, reservoirs, snowpack and transfers between basins that contribute to Denver’s supply.
State records
Water planning
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Basin implementation plan
- Reporting period
- Plan cycle
Partial records
Snowpack
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Snowpack
- Reporting period
- Observation
Partial records
Supply
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Basin supply
- Reporting period
- Plan cycle
Partial records
Imported water
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Transbasin diversion
- Reporting period
- Plan cycle
Partial records
Water rights
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Prior appropriation
- Reporting period
- Plan cycle
Water planning regions
South Platte / Metro roundtable contextBasin roundtableSources and limitations
A complete statewide list of water rights is not available here. A connection between basins does not tell us how much water is being delivered today.
- Colorado Water Conservation Board: Colorado Water PlanPlan scenarios and projects are not current observations.
- Colorado Water Conservation Board: Basin Implementation PlansBasin projects retain source status and are not assumed funded.
- Natural Resources Conservation Service: Colorado Snow Survey and Water Supply ForecastingSnowpack is a supply input, not household supply or a guarantee of runoff.
Discovery
Compare nearby and related places
These places share geography or comparable data. Their water conditions may differ.
Detailed testing and assessment records are not available here yet.We do not have enough information to show here yet. That does not tell us whether the water is in good or poor condition.
Waters around you
Rivers and lakes near Denver
Nearby rivers and lakes from USGS maps. Proximity does not establish a drinking-water source, public access or shared water conditions.
We have no named river or lake to show in this area yet.
Smaller streams may still be present. This catalog does not include every waterbody.
Water sources
Where Denver's water comes from
Denver Water receives water from Blue, Williams Fork, and Fraser river watersheds and South Platte basin and foothills collection, according to the source records.
The links show sources and suppliers, not the amount being delivered today. Select one for its source record.
Sources traced upstreamSource coverage does not measure water quality or reliability.
Your water system
Where it gets water
Sources and relationships as a list
Documented current sources or suppliers for Denver Water include Blue, Williams Fork, and Fraser river watersheds and South Platte basin and foothills collection. A relationship does not by itself establish the current delivered amount.
- Denver Water imports from Blue, Williams Fork, and Fraser river watersheds. Current. The relationship is documented; a current delivered amount is not available.
- Denver Water draws from South Platte basin and foothills collection. Current. The relationship is documented; a current delivered amount is not available.
Water source types explained
Surface waterWater drawn from rivers, lakes, or reservoirs.
GroundwaterWater pumped from aquifers—bodies of rock or sediment that store and transmit groundwater, not underground lakes.
Wholesale waterA regional supplier can supply your local provider without serving your household directly.
Imported waterYour drinking-water source basin can differ from the watershed where you live.