Denver, CO water quality
Denver, CO is served by 64 public water systems, serving 1,846,354 people combined. Across those systems, we count 39 health-based violations in the last 5 years. The worst Tap Grade among them is F.
Water systems serving Denver
DENVER WATER BOARD
DENVER, CO · 1,287,000 served
THORNTON CITY OF
THORNTON, CO · 226,465 served
CONSOLIDATED MUTUAL MAPLE GROVE
LAKEWOOD, CO · 81,400 served
NORTHGLENN CITY OF
NORTHGLENN, CO · 48,927 served
BANCROFT CLOVER WSD
LAKEWOOD, CO · 44,000 served
BEAR CREEK WSD
LAKEWOOD, CO · 30,000 served
CRESTVIEW WSD
DENVER, CO · 23,756 served
CHERRY CREEK VALLEY WSD
DENVER, CO · 22,000 served
NORTH WASHINGTON STREET WSD
DENVER, CO · 14,500 served
WILLOWBROOK WSD
LAKEWOOD, CO · 9,348 served
LAKEWOOD CITY OF
LAKEWOOD, CO · 6,000 served
EDGEWATER CITY OF
EDGEWATER, CO · 5,300 served
HIGH VIEW WD
DENVER, CO · 4,000 served
ADVENIR FRENCH QUARTER
DENVER, CO · 3,447 served
MEADOWBROOK WD
LAKEWOOD, CO · 3,290 served
WIKIUP MHP
LAKEWOOD, CO · 2,500 served
NORTH PECOS WSD
DENVER, CO · 2,500 served
EASTERN ADAMS CO MD
DENVER, CO · 2,485 served
ALAMEDA WSD
LAKEWOOD, CO · 2,480 served
CONIFER HIGH SCHOOL
LAKEWOOD, CO · 2,350 served
KIMBERLY HILLS MHP
LAKEWOOD, CO · 2,005 served
PINE LAKES RANCH
LAKEWOOD, CO · 1,905 served
FRIENDLY VILLAGE OF AURORA MHP
LAKEWOOD, CO · 1,786 served
WOODLAND HILLS MHC
THORNTON, CO · 1,740 served
REDWOOD ESTATES
LAKEWOOD, CO · 1,500 served
INDIAN HILLS WD
LAKEWOOD, CO · 1,300 served
THE GROVE AT ALTA RIDGE
THORNTON, CO · 1,300 served
CASA ESTATES MHP
WESTMINSTER, CO · 1,117 served
FRIENDLY VILLAGE OF THE ROCKIES
THORNTON, CO · 1,046 served
NORTH LINCOLN WSD
DENVER, CO · 1,000 served
MARSHDALE ELEM SCHOOL
LAKEWOOD, CO · 920 served
COUNTRYSIDE VILLAGE OF DENVER
LAKEWOOD, CO · 863 served
LAMPLIGHTER MHP
LAKEWOOD, CO · 651 served
ELK CREEK ELEM SCHOOL
LAKEWOOD, CO · 600 served
CONIFER WA
LAKEWOOD, CO · 550 served
WATKINS SQUARE
NORTHGLENN, CO · 515 served
SHERIDAN MHP
LAKEWOOD, CO · 480 served
MOUNTAINSIDE ESTATES MHP
LAKEWOOD, CO · 473 served
RAMAH IN THE ROCKIES
DENVER, CO · 405 served
FOREST HILLS MD RIVA CHASE
DENVER, CO · 400 served
BONVUE WATER AND SANITATION DISTRICT
LAKEWOOD, CO · 350 served
IDLEDALE WSD
DENVER, CO · 350 served
EVERGREEN LUTHERAN CHURCH
LAKEWOOD, CO · 306 served
THORNTON ESTATES
LAKEWOOD, CO · 300 served
GARDEN MEADOWS
LAKEWOOD, CO · 250 served
INSPIRATION VALLEY MHP
LAKEWOOD, CO · 250 served
ELEVADO ESTATES LLC
LAKEWOOD, CO · 250 served
MAJESTIC MHP
LAKEWOOD, CO · 232 served
RIVERDALE PEAKS II MD
LAKEWOOD, CO · 209 served
MT EVANS OUTDOOR LAB
LAKEWOOD, CO · 172 served
SHADY LANE MHP
LAKEWOOD, CO · 165 served
WINDY PEAKS OUTDOOR LABORATORY
LAKEWOOD, CO · 164 served
CREEKSIDE SOUTH ESTATES METRO DISTRICT
LAKEWOOD, CO · 160 served
COAL CREEK ELEMENTARY
LAKEWOOD, CO · 150 served
COMMERCE HEIGHTS
LAKEWOOD, CO · 130 served
PLEASANT VIEW ESTATES
DENVER, CO · 122 served
SUBURBAN ESTATES MHP
DENVER, CO · 115 served
CONIFER DENTAL MEDICAL GROUP
LAKEWOOD, CO · 100 served
WEST RANCH CENTER
DENVER, CO · 75 served
MARSHDALE GENERAL STORE
LAKEWOOD, CO · 53 served
VALLEY VISTA ESTATES
DENVER, CO · 51 served
CANYON SHOPPES THE
WESTMINSTER, CO · 36 served
BEARS INN BED AND BREAKFAST
LAKEWOOD, CO · 32 served
TRUMBULL TOWN OF
DENVER, CO · 28 served
Get alerted when Denver's water gets a violation
Alert emails are in development; once they launch, we'll only email you about this water system. Unsubscribe anytime via contact@tapgraded.com.
Worried about what's in your tap?
See which water filters are certified to remove the contaminants found in your area.
Find a filter that matches your waterFrequently asked questions
Is Denver, CO tap water safe to drink?
64 public water systems serve Denver, CO, with 39 health-based violations in the last 5 years across them. The worst Tap Grade among them is F. A Tap Grade summarizes public EPA compliance records; it is not a determination that water is safe or unsafe to drink.
Does Denver's water have lead in it?
The most recent 90th-percentile lead sample is 9 ppb, versus the EPA action level of 15 ppb.
Has PFAS been detected in Denver's water?
Yes — at least one water system serving Denver has detected PFAS under UCMR5.
Other cities in Colorado
See all of Colorado →Source: EPA SDWIS/ECHO · Data as of 2026Q2
TapGraded presents public EPA data for information only — it is not health advice and not a determination that any water is safe or unsafe to drink. For health concerns, contact your water utility or local health department.