Is Bennett, CO Tap Water Safe to Drink?
Graded A-, with 3 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
89.3/100
waterverge.com Bennett, CO — Water Quality Report
Bennett's drinking water received a grade of A- (89.3 out of 100), indicating good water quality. The city's 1 water system serves approximately 4,400 residents using groundwater.
Lead levels were measured at 1.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 19 violations on record, including 5 health-based violations. 3 remain unresolved.
What to know about Bennett's water
Bennett ranks #22 out of 246 cities in Colorado for water quality, placing it one of the best in the state.
Bennett relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
Water quality score
See methodology →Is Bennett, CO water safe to drink?
Bennett's drinking water has significant quality concerns based on EPA testing data. With a grade of A- (89.3/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 4,400 residents using groundwater (wells).
Recent water quality updates for Bennett
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Bennett's water quality assessment. Grade: A- (89.3/100).
Contaminants: Revised Total Coliform Rule.
Contaminants: Total Haloacetic Acids (HAA5), TTHM.
Federal disaster declaration (FEMA DR-4731). Flood event — may have impacted local water infrastructure.
Contaminants: Chlorine.
Federal disaster declaration (FEMA DR-4145). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Bennett's water supply.
Well within EPA limits.
Violation history
Bennett's water system has 19 total violations on record, including 5 health-based violations. 3 remain unresolved. 5 violations were issued in the last 5 years.
Flood & environmental risk
Arapahoe County has experienced 6 federally declared disasters since 1969. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies.
Where does Bennett's water come from?
Bennett's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 4,400 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Bennett residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Bennett's water.
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Bennett's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Drought conditions
D3 — extreme droughtAdams County is currently in D3 (extreme drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.
Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.
Flood & disaster history
Arapahoe County has experienced 6 federally declared disasters since 1969. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 1.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Bennett compares by contaminant
Explore where Bennett ranks among all Colorado cities for specific contaminants.
Water source & infrastructure
Where Bennett's water comes from
Bennett's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by local government ownership and serves approximately 4,400 people through 1 water system.
Water systems serving Bennett
| System Name | PWSID | Population | Source |
|---|---|---|---|
| BENNETT TOWN OF | CO0101020 | 4,400 | GW |
How Bennett compares
Full Colorado rankings →Bennett's score of 89.3/100 is above the average of 45/100 among major Colorado cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Colorado rankings →About Bennett, CO
Wikipedia →Bennett is a statutory town located in Adams and Arapahoe counties, Colorado, United States. The town population was 2,862 at the 2020 United States census with 2,443 residing in Adams County and 419 residing in Arapahoe County.
Learn more about your water
Guides and resources related to Bennett's water quality findings.
Explore water quality across Adams
Frequently asked questions
Is Bennett, CO tap water safe to drink?
Bennett's water quality earned a grade of A- (89.3/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #22 out of 246 cities tested in Colorado.
What contaminants are in Bennett's water?
Lead was measured at 1.0 ppb (90th percentile). 19 violations are on record.
How is Bennett's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Bennett?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Bennett's water come from?
Bennett's water is sourced from Groundwater. The city has 1 water system serving approximately 4,400 residents.
What health violations has Bennett's water system had?
Bennett has 5 health-based violations on record. The most recent violation was recorded in August 2024. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 3 violations remain unresolved.
Is Bennett's groundwater at risk of contamination?
Bennett uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 19 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Bennett's water compare to other cities?
Bennett ranks #22 out of 246 cities in Colorado (better than 91% of state cities) and #2895 out of 15744 cities nationally (82th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.