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Old Lyme Tap Water Quality Report
Old Lyme's water has 6 contaminants above EPA MCLGs. We recommend using a certified water filter.
1 other system serving parts of Old Lyme reports results above guidelines — check which system bills you. CHADWICK HOMEOWNERS ASSN., INC. (2 above guidelines)
Water system
CTWC - SHORELINE REGION-SOUND VIEW
2 other systems also serve parts of Old Lyme. See their figures
People Served
3,028
Health-based violations since 2020
0
CTWC - SHORELINE REGION-SOUND VIEW. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
May 2022 · CTWC - SHORELINE REGION-SOUND VIEW
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Old Lyme Tap Water Safe to Drink?
We strongly recommend using a certified water filter to reduce exposure: Old Lyme's water has 6 contaminants above EPA health-based guidelines. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Old Lyme's water.
CTWC - SHORELINE REGION-SOUND VIEW, Old Lyme's water system, serves 3,028 people. 2 other systems also serve parts of Old Lyme. Each system's results are listed under its own name, never added to CTWC - SHORELINE REGION-SOUND VIEW's. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for CTWC - SHORELINE REGION-SOUND VIEW is from May 2022.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Connecticut
Old Lyme Water Service Areas
What these numbers actually mean for Old Lyme, CT
We read Old Lyme, CT’s published record and send you a short report — which findings warrant a decision, which to ignore, and what to do about it. Including when the answer is nothing.
- 6 contaminants above EPA MCLGs and 2 contaminants with an EPA health goal detected in some samples (no level on file)
- 125 results on file
- No PFAS results on record
Buying a home here? Property Water Report — $49 Emailed within one business day.
Fluoride in Old Lyme's water
CTWC - SHORELINE REGION-SOUND VIEW
PWSID CT1050732
CTWC - SHORELINE REGION-SOUND VIEW reported 0.11 mg/L, below the 0.7 mg/L U.S. Public Health Service recommendation.
CHADWICK HOMEOWNERS ASSN., INC.
PWSID CT1050011
CHADWICK HOMEOWNERS ASSN., INC. reported no detectable fluoride.
LYMEWOOD ELDERLY HOUSING
PWSID CT1056221
Fluoride was detected in 25.0% of LYMEWOOD ELDERLY HOUSING's samples (median below the detection limit).
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Recommended Water Filters for Old Lyme
Based on Old Lyme's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
Culligan
ZeroWater
NSF Certified:
Flow Rate
1.9 gpm
Daily Production
1 gpd
Highlights:
- Compact design
- Easy to set up
- Affordable
- NSF-42, NSF-53, NSF-401 certified
Removes 19 contaminants:
+14 more
Strontium, Molybdenum, Fluoride, Uranium, Lead, Total PFAS, Chlorine, 25, Phosphorus, Bicarbonate, Calcium, Carbonate, Magnesium, Sodium
AquaTru
Classic
NSF Certified:
Flow Rate
0.04 gpm
Daily Production
600 gpd
Highlights:
- Best overall contaminant reduction score
- Most performance certifications
- Lifetime warranty
- NSF-42, NSF-53, NSF-58, NSF-401 certified
Removes 23 contaminants:
+18 more
Molybdenum, Barium, Chlorine, Arsenic, 83+ contaminants, Calcium, Chloride, Copper, Magnesium, Nitrate, Phosphorus, Sodium, Sulfate, Total Dissolved Solids, Zinc, Total THMs, Chloroform, Nitrate (as N)
AquaTru
Carafe
NSF Certified:
Flow Rate
0.3 gpm
Daily Production
4 gpd
Highlights:
- Verified PFAS reduction
- Glass collection vessel
- Plug-and-play installation
- NSF-53, NSF-42, NSF-58, NSF-401, NSF-372 certified
Removes 17 contaminants:
+12 more
Arsenic, 83+ contaminants, Copper, Total THMs, Chloroform, Chloride, Sulfate, Nitrate (as N), Molybdenum, Barium, Strontium, Uranium
Waterdrop
A1
NSF Certified:
Flow Rate
0.042 gpm
Daily Production
130 gpd
Highlights:
- Built-in UV sterilization
- Easy maintenance with filter change reminders
- NSF-58 certified
- Hot and cold water dispensing
Removes 12 contaminants:
+7 more
Molybdenum, Sulfate, Strontium, Phosphorus, Chlorine, Barium, Nitrate
Verify Your Water Quality with Independent Testing
With 6 contaminants above EPA MCLGs and 2 contaminants with an EPA health goal detected in some samples (no level on file), independent laboratory testing provides a second opinion and can track changes over time.
SimpleLab
Advanced Home Water Test
$269
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.
Tap Score
Haloacetic Acids (HAA9) Test
$275
Tests for disinfection byproducts formed when chlorine reacts with organic matter in water treatment.
Tap Score
Advanced Microplastics Test
$829
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
With 6 contaminants above health guidelines, you may want to explore water purification options. Learn how to make distilled water at home for applications like humidifiers, CPAP machines, and baby formula.
What Old Lyme's water readings can explain
Utility-reported data for Old Lyme includes turbidity and sulfate — the readings behind these common tap water questions. Each page starts with the hot-tap and cold-tap check, then shows what your own water system reported.
On a private well near Old Lyme? Public-water results do not apply to private wells. See Lower Connecticut River Valley Planning Region well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Frequently Asked Questions About Old Lyme Tap Water
Old Lyme's water has 6 contaminants above EPA MCLGs. We strongly recommend using a certified water filter to reduce exposure to these contaminants. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Old Lyme's water.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach CTWC - SHORELINE REGION-SOUND VIEW. For a problem with your water now (discolored water, no water, low pressure, a leak), contact CTWC - SHORELINE REGION-SOUND VIEW directly.
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