County · Colorado
Larimer County, Colorado: drinking water records
Explore EPA records for 47 community water systems across 18 ZIP codes in Larimer County, then find water-testing resources and available recent monitoring-station readings.
Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages
Drinking-water records
EPA survey and compliance records are historical reports. UCMR 5 results are available for 12 of the 47 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems in this county
All 47 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Ft Collins City of CO0135291 | 179,901 | 120 | 0 | 1 | 2.8 ppbbelow the action level |
| Estes Park Town of CO0135257 | 16,722 | 240 | 0 | 1 | 1.4 ppbbelow the action level |
| Berthoud Town of CO0135138 | 14,211 | 120 | 0 | 1 | 10 ppbbelow the action level |
| Wellington Town of CO0135838 | 11,720 | 180 | 0 | 2 | 1 ppbbelow the action level |
| Ymca Rockies Wind River CO0135883 | 3,730 | 120 | 0 | 17 | 2 ppbbelow the action level |
| Loveland City of CO0135485 | 91,077 | 150 | 0 | 0 | 3.3 ppbbelow the action level |
| Ft Collins Loveland WD CO0135292 | 63,532 | 240 | 0 | 0 | 2 ppbbelow the action level |
| East Larimer County WD CO0135233 | 27,944 | 120 | 0 | 0 | 3.9 ppbbelow the action level |
| Csu Main and West Housing Campus CO0235184 | 27,375 | 120 | 0 | 0 | 8 ppbbelow the action level |
| Little Thompson WD CO0135477 | 25,654 | 120 | 1 | 0 | 9 ppbbelow the action level |
| Northern Colorado Wa CO0135554 | 4,675 | 300 | 0 | 0 | 1 ppbbelow the action level |
| West Fort Collins WD CO0135290 | 4,000 | 120 | 0 | 0 | 5.1 ppbbelow the action level |
| Pinewood Springs WD CO0135610 | 745 | 0 | 0 | 26 | 3 ppbbelow the action level |
| Riverview Cg CO0235676 | 450 | 0 | 0 | 9 | 0.5 ppbbelow the action level |
| Big Elk Meadows Wa CO0135143 | 405 | 0 | 0 | 8 | 3 ppbbelow the action level |
| Consolidated Glacier View Meadows Assoc CO0135315 | 395 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Apple & Cherry Ridge Village CO0135119 | 350 | 0 | 0 | 1 | 2 ppbbelow the action level |
| Nueva Vida Mobile Home Park CO0135600 | 266 | 0 | 0 | 2 | 0 ppbbelow the action level |
| Annunciation Heights CO0235185 | 260 | 0 | 0 | 5 | 15 ppbat or above the action level |
| Newell Warnock Wa CO0135538 | 160 | 0 | 0 | 1 | 2.5 ppbbelow the action level |
| Meadowlark Mobile Home Park CO0135505 | 125 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Shambhala Mountain Center CO0235685 | 90 | 0 | 0 | 15 | 1.5 ppbbelow the action level |
| Eden Valley Institute CO0135237 | 80 | 0 | 0 | 6 | 0.8 ppbbelow the action level |
| Spring Canyon WSD CO0135721 | 2,320 | 0 | 0 | 0 | 15 ppbat or above the action level |
| Timber Ridge MHP CO0135742 | 1,736 | 0 | 0 | 0 | 1.9 ppbbelow the action level |
| Harmony Village MHP CO0135333 | 1,215 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Cloverleaf Colorado LLC CO0135184 | 1,007 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Poudre Valley MHC CO0135627 | 985 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Collins Aire MHC CO0135186 | 946 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Rmnp Headquarters East CO0135685 | 900 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Lago Vista Mobile Home Park CO0135428 | 842 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Hickory Village CO0135343 | 816 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Sunset Park MHC CO0135717 | 462 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Sunset WD CO0135726 | 425 | 0 | 0 | 0 | 1.5 ppbbelow the action level |
| Windcliff Poa CO0135001 | 339 | 0 | 0 | 0 | 3.5 ppbbelow the action level |
| North Carter Lake WD CO0135553 | 328 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Alpine Vista Village CO0135113 | 313 | 0 | 0 | 0 | 6 ppbbelow the action level |
| Aspen Ridge MHC CO0135122 | 302 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Pleasant Grove MHP CO0135614 | 285 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Loveland MHP CO0135486 | 283 | 0 | 0 | 0 | 0.5 ppbbelow the action level |
| Sunshine Acres MHP CO0135727 | 78 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Sunrise Ranch CO0135725 | 75 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Pinewood Mobile Home Park CO0135611 | 65 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Carter Lake Filter Plant CO0135476 | 11 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Soldier Canyon Filter Plant CO0135718 | 0 | 0 | 0 | 0 | 8.5 ppbbelow the action level |
| Skyline CO0135676 | 402 | 0 | 0 | 0 | not reported |
| Northstar Mobile Home Park CO0135552 | 136 | 0 | 0 | 0 | not reported |
Shaded rows report lead at or above the 15 ppb action level in their latest monitoring period. EPA sets that level for the value 9 in 10 sampled homes fall at or below; reaching it requires the utility to act, and it is not a measurement of any single tap. 2 systems in this table are at or above it. What an action level means
USGS · Monitoring stations
The water, more recently.
Available station readings in Larimer County, Colorado. Each measurement keeps its time, unit and original source.
These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.
Recent observations load when this section comes into view.
How these readings update
We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.
Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.
Your next step
Water testing, reports & local help.
Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.
Official national directories
Water testing
Find your state’s private-well program
EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.
Water testing
Find a certified drinking-water laboratory
Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.
Public records
Find your utility’s Consumer Confidence Report
EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.
Public records
Explore USGS water observations
Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.
A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.
Understand water testing and laboratory reportsResource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction
Explore your area
Local coverage in Larimer County
18ZIP areas in this overview
Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.
Towns and communities
- Berthoud
- Estes Park
- Fort Collins
- Laporte
- Loveland
- Red Feather Lakes
- Timnath
- Wellington
- Woods Landing-Jelm
View ZIP areas and understand coverage
- 80512Fort Collins
- 80513Berthoud
- 80515
- 80517Estes Park
- 80521Fort Collins
- 80524Fort Collins
- 80525Fort Collins
- 80526Fort Collins
- 80528Fort Collins
- 80532
- 80535Laporte
- 80536
- 80537Loveland
- 80538Loveland
- 80545Red Feather Lakes
- 80547Timnath
- 80549Wellington
- 82063Woods Landing-Jelm
These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.
Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.
Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.