Is Lewisboro (T), CT Tap Water Safe to Drink?
Graded B+, with 7 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
83.6/100
waterverge.com Lewisboro (T), CT — Water Quality Report
Lewisboro (T)'s drinking water received a grade of B+ (83.6 out of 100), indicating good water quality. The city's 2 water systems serve approximately 656 residents using ground water under influence.
Lead levels were measured at 4.0 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 104 violations on record, including 3 health-based violations. 7 remain unresolved.
What to know about Lewisboro (T)'s water
Lewisboro (T) ranks #22 out of 158 cities in Connecticut for water quality, placing it above average in the state.
Lewisboro (T) 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.
As a small community water system, Lewisboro (T) may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Lewisboro (T), CT water safe to drink?
Lewisboro (T)'s drinking water has significant quality concerns based on EPA testing data. With a grade of B+ (83.6/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 2 water systems serve approximately 656 residents using groundwater (wells).
Recent water quality updates for Lewisboro (T)
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Lewisboro (T)'s water quality assessment. Grade: B+ (83.6/100).
Contaminants: Total Haloacetic Acids (HAA5), TTHM.
1 health-based. Contaminants: Lead and Copper Rule.
Contaminants: TTHM, Nitrate, Total Haloacetic Acids (HAA5).
Key contaminant findings
Based on the most recent EPA sampling data for Lewisboro (T)'s water supply.
Well within EPA limits.
Violation history
Lewisboro (T)'s water system has 104 total violations on record, including 3 health-based violations. 7 remain unresolved. 2 violations were issued in the last 5 years.
Where does Lewisboro (T)'s water come from?
Lewisboro (T)'s drinking water comes from groundwater (wells), supplied by 2 water systems serving approximately 656 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Still River (river), Pootatuck River (river), Saugatuck River (river), Saugatuck R Below Saugatuck Res Nr Lyons Plain (river), Aspetuck River (river).
What Lewisboro (T) residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Lewisboro (T)'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.
Run cold water for 30 seconds before drinking, especially in the morning. Lead and copper leach from household plumbing when water sits in pipes.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
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. | 4.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Lewisboro (T) compares by contaminant
Explore where Lewisboro (T) ranks among all Connecticut cities for specific contaminants.
Water source & infrastructure
Where Lewisboro (T)'s water comes from
Lewisboro (T)'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 private ownership and serves approximately 656 people through 2 water systems.
Water bodies near Lewisboro (T)
Lewisboro (T) is located near 5 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Lewisboro (T)
| System Name | PWSID | Population | Source |
|---|---|---|---|
| MEADOWS AT CROSS RIVER | NY5920685 | 630 | GU |
| WACCABUC FARMS INC. | NY5903769 | 26 | GW |
How Lewisboro (T) compares
Full Connecticut rankings →Lewisboro (T)'s score of 83.6/100 is above the average of 47/100 among major Connecticut cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Connecticut rankings →About Lewisboro (T), CT
Wikipedia →Bethel is a town in Fairfield County, Connecticut, United States. As of the 2020 census, the population of the town was 20,358. The town is part of the Western Connecticut Planning Region. The town includes the Bethel Census-Designated Place.
Learn more about your water
Guides and resources related to Lewisboro (T)'s water quality findings.
Explore water quality across Westchester
Frequently asked questions
Is Lewisboro (T), CT tap water safe to drink?
Lewisboro (T)'s water quality earned a grade of B+ (83.6/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #22 out of 158 cities tested in Connecticut.
What contaminants are in Lewisboro (T)'s water?
Lead was measured at 4.0 ppb (90th percentile). 104 violations are on record.
How is Lewisboro (T)'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 Lewisboro (T)?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Lewisboro (T)'s water come from?
Lewisboro (T)'s water is sourced from Ground water under influence. The city has 2 water systems serving approximately 656 residents.
What health violations has Lewisboro (T)'s water system had?
Lewisboro (T) has 3 health-based violations on record. The most recent violation was recorded in April 2022. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 7 violations remain unresolved.
Is Lewisboro (T)'s groundwater at risk of contamination?
Lewisboro (T) 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 104 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 Lewisboro (T)'s water compare to other cities?
Lewisboro (T) ranks #22 out of 158 cities in Connecticut (better than 86% of state cities) and #6354 out of 15744 cities nationally (60th percentile). The grade of B+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.