Records currently available
Colorado record snapshot
These counts describe reviewed records available on Water Quality Lookup. They are not a count of every provider, city, or county in Colorado.
Reviewed profiles or limited identity records.
Local entry points, not service-area boundaries.
Guide sources reviewed September 13, 2026.
Cities
Colorado city entry points currently available
These Colorado city pages are local starting points. City boundaries and water service areas may not match, and more than one provider may serve a city.
Fort Collins
Start with City of Fort Collins, then confirm the provider for your address.
Open Fort CollinsGreeley
Start with City of Greeley, then confirm the provider for your address.
Open GreeleyPueblo
Start with Board of Water Works of Pueblo, Colorado, then confirm the provider for your address.
Open PuebloLongmont
Start with City of Longmont, then confirm the provider for your address.
Open LongmontLoveland
Start with City of Loveland, then confirm the provider for your address.
Open LovelandGrand Junction
Start with City of Grand Junction, then confirm the provider for your address.
Open Grand JunctionView 9 more available cities
Water systems
Colorado public water systems currently available
These previews link to reviewed system profiles with identifiers, report-year context, sources, and limitations.
City of Fort Collins
PWSID CO0135291 · Fort Collins · Latest reviewed report 2025
View system profileCity of Greeley
PWSID CO0162321 · Greeley · Latest reviewed report 2026
View system profileBoard of Water Works of Pueblo, Colorado
PWSID CO0151500 · Pueblo · Latest reviewed report 2026
View system profileCity of Longmont
PWSID CO0107485 · Longmont · Latest reviewed report 2025
View system profileCity of Loveland
PWSID CO0135485 · Loveland · Latest reviewed report 2024
View system profileCity of Grand Junction
PWSID CO0139321 · Grand Junction · Latest reviewed report 2026
View system profileReport context
Read the Colorado reports already available here
Start with an existing system report, then use the official tools below for records and updates. The report title year, sampling dates and our review date describe different things.
Boulder · CO0107152
A 2026 report describing 2025 testing
Boulder's 2026 Drinking Water Quality Report summarizes the 2025 calendar year. Some tables include earlier sampling: check the date beside each result rather than applying the title year to every row.
Our report review is dated July 23, 2026. The official report file was checked again on September 13 and matched the reviewed copy; that link check does not change the report's sampling dates.
Glenwood Springs · CO0123314
Follow the report's own reporting period
The existing Glenwood Springs 2026 report page keeps the source's monitoring periods, units and explanatory notes together. Read those details before comparing a result with another provider.
The source review is dated July 23, 2026; later publication review does not make its underlying measurements newer.
Lafayette · CO0107473
Use the reviewed 2025 report
Lafayette's available report is titled 2025. Its report page identifies the collection periods and limitations rather than treating the title as the date of every test.
The existing source and report review is dated August 15, 2026. A report is a historical disclosure, so use the provider for today's instructions.
Continue your Colorado lookup
Use the system directory, a plain-language guide, or the methodology page for the next step.
System directory
Colorado public water systems
Browse the reviewed system profiles currently available for this state.
Browse systemsLookup guide
How to look up your drinking water system
Start with a utility bill, PWSID, state lookup tool, or official report so you can find the public water system behind a city or provider name.
Read the lookup guideReport guide
How to read a water quality report
A plain-English walkthrough of Consumer Confidence Reports, including report years, detected contaminants, legal limits, violations, and source notes.
Read the report guideData and trust
Sources, methodology, and limitations
See how records are sourced, reviewed, dated, and limited before using a summary.
Review methodologyStatewide context
Understand the provider behind the place name
Colorado oversight
Public systems and private wells follow different paths
The Colorado Department of Public Health and Environment provides drinking-water information and public-system oversight through its Water Quality Control Division. A household private well needs a separate testing and maintenance plan.
Confirm your provider using your water bill, landlord or property manager. A city page, a water district boundary or a nearby system is not confirmation that it serves your address.
Boulder example
Source-water context is specific to the system
Boulder's 2026 report identifies Barker Reservoir, North Boulder Creek, Carter Lake and Boulder Reservoir as its drinking-water sources, with the source mix varying by season.
Its source-water protection plan describes potential contamination sources. A potential source is not a measured tap-water result, and Boulder's supply does not describe every Colorado community.
Coverage
Use local records without making statewide comparisons
The cities, systems and reports on this page are selected site coverage. Their counts are not Colorado's statewide inventory, and the available reports are not a statewide water-quality sample.
Compare the same contaminant, units, sampling period and result type within a confirmed system. Different report years and monitoring schedules can make a simple comparison misleading.
Official lookup
Find and confirm a Colorado public water system
Start with your provider
Use the system name and PWSID together
Ask the provider named on your bill for its public water system identification number, or PWSID. CDPHE's drinking-water page links to its Safe Water Information Finder (SWIFT).
The SWIFT destination requested Google verification during our September 13 review, so we could not complete a search there. EPA's drinking-water search and the provider are alternative starting points.
- Confirm the provider name on your bill or with your property manager.
- Open EPA's drinking-water search and use the System Name or PWSID fields to narrow the records.
- Match the record's name and identifier, then ask the provider to confirm service to your address.
Verified identifier
Boulder is CO0107152
A September 13 query of EPA's official water-system data returned BOULDER CITY OF for CO0107152. That identifier also appears on Boulder's 2026 report and the existing Boulder profile.
This confirms the example's system identity. It does not establish address-level service, current compliance or current advisory status.
Official tools
Find the right records and current instructions
Reports and access
Request a report you can use
Look for the provider's Drinking Water Quality Report or Consumer Confidence Report (CCR). Boulder's official archive offers its 2026 report in English and Spanish, plus earlier editions.
If you cannot find your provider's report or need another format, contact that provider. Boulder's page also links to the city's accessibility service; other providers may offer different arrangements.
Current information
Check the provider when a notice matters
Use your confirmed provider's current notices and direct contact channels for interruptions or drinking-water instructions. Boulder's service-disruptions page is one local starting point; it is not a statewide notice feed.
An annual report or an empty search result cannot establish that no advisory is active. Ask the provider which notification options cover your location; this page does not enroll you in alerts.
Service lines and lead
Keep pipe materials separate from tap results
Page 5 of Boulder's 2026 report explains its service-line inventory, including city-owned and customer-owned portions. It provides directions for checking the recorded material and contacting the city about identification.
A service-line inventory describes pipe material. It does not measure lead at an individual tap or resolve every source of lead in building plumbing. Ask your own provider about its inventory and testing instructions.
PFAS
Read the testing scope before the result
Boulder's PFAS page describes its 2023 testing under EPA's fifth Unregulated Contaminant Monitoring Rule and its reporting limits. Keep the named compounds and sampling period attached to any result.
Those observations concern Boulder's system and that testing program. They do not establish PFAS conditions across Colorado or at an untested address.
Private wells
Plan testing for the well itself
Boulder County's private-well guidance explains baseline and repeat testing, laboratory options and how to discuss results. It links to Colorado's State Public Health Laboratory and sample-submission instructions.
Laboratories differ in available tests and fees. Ask the laboratory which bottles, handling and delivery requirements apply before collecting a sample. County assistance and sample drop-off details apply to Boulder County; elsewhere, ask your local health department.
Common questions
Use Colorado water records with the right context
Why does a 2026 report contain older tests?
The title, main reporting period and individual sample dates can differ. Boulder's 2026 report summarizes 2025, while its lead table uses an earlier monitoring period. Read each row's date and notes before drawing a conclusion.
Does finding my city confirm my water system?
No. Use the provider on your bill and confirm its PWSID. City names and administrative boundaries can overlap several providers or private wells.
Where should I check if I need instructions today?
Contact your confirmed water provider and consult its current official notices. Use CDPHE's program contacts for state guidance. The reviewed reports here do not provide a live advisory check.
Official sources
Official sources for Colorado
Use Colorado Department of Public Health and Environment and the official sources below to verify system identity, record dates, and current notices before relying on a summary.
Statewide sources
Colorado program and federal lookup
PWSID CO0107152 · Sources for this system
Boulder reports and guidance
PWSID CO0123314 · Sources for this system
Glenwood Springs
PWSID CO0107473 · Sources for this system