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Seymour Tap Water Quality Report
Seymour's water has 3 contaminants above EPA MCLGs and 2 above EPA's legal limit (MCL, enforceable from April 26, 2029). We recommend using a certified water filter.
Other systems listed for Seymour with results above guidelines: ARROWHEAD BY THE LAKE ASSOCIATION, INC. (3 above guidelines), AQUARION WATER CO OF CT-MAIN SYSTEM (4 above guidelines)
Water system
AQUARION WATER CO OF CT-VALLEY SYSTEM
2 other systems are listed for Seymour. See their figures
People Served
13,080
Health-based violations since 2020
0
AQUARION WATER CO OF CT-VALLEY SYSTEM. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Nov 2025 · AQUARION WATER CO OF CT-VALLEY SYSTEM
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Seymour Tap Water Safe to Drink?
We strongly recommend using a certified water filter to reduce exposure: Seymour's water has 5 contaminants above EPA health-based guidelines. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Seymour's water.
AQUARION WATER CO OF CT-VALLEY SYSTEM, Seymour's water system, serves 13,080 people. 2 other systems are listed for Seymour. Each system's results are listed under its own name, never added to AQUARION WATER CO OF CT-VALLEY SYSTEM's. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for AQUARION WATER CO OF CT-VALLEY SYSTEM is from Nov 2025.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Connecticut
Seymour Water Service Areas
What these numbers actually mean for Seymour, CT
We read Seymour, 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.
- 3 contaminants above EPA MCLGs and 2 above EPA's legal limit (MCL, enforceable from April 26, 2029) and 3 contaminants with an EPA health goal detected in some samples (no level on file)
- 151 results on file
- 23 PFAS compounds on record
Buying a home here? Property Water Report — $49 Emailed within one business day.
Fluoride in Seymour's water
AQUARION WATER CO OF CT-MAIN SYSTEM
PWSID CT0150011
AQUARION WATER CO OF CT-MAIN SYSTEM reported 0.79 mg/L, at or above the 0.7 mg/L U.S. Public Health Service recommendation and below the 1.5 mg/L WHO guideline value and NTP neurodevelopment review level.
AQUARION WATER CO OF CT-VALLEY SYSTEM
PWSID CT1240011
AQUARION WATER CO OF CT-VALLEY SYSTEM reported 0.04 mg/L, below the 0.7 mg/L U.S. Public Health Service recommendation.
ARROWHEAD BY THE LAKE ASSOCIATION, INC.
PWSID CT1669011
ARROWHEAD BY THE LAKE ASSOCIATION, INC. reported 0.0208 mg/L, below the 0.7 mg/L U.S. Public Health Service recommendation.
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Recommended Water Filters for Seymour
Based on Seymour's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA's health goals (MCLGs) or legal limits (MCL).
Solventum Purification Inc.
3MRO401
NSF Certified:
Daily Production
11.48 gpd
Highlights:
- NSF-58 certified reverse osmosis system
- 11.48 GPD production capacity
- Reduces total dissolved solids (TDS) for purer water
Removes 15 contaminants:
+10 more
Copper, Cryptosporidium, Fluoride, Lead, Radium 226, Radium 228, Radium, combined (-226 & -228), Selenium, Total Dissolved Solids, Turbidity
Solventum Purification Inc.
3MRO301
NSF Certified:
Daily Production
11.48 gpd
Highlights:
- NSF-58 certified reverse osmosis system
- 11.48 GPD production capacity
- Reduces total dissolved solids (TDS) for purer water
Removes 15 contaminants:
+10 more
Copper, Cryptosporidium, Fluoride, Lead, Radium 226, Radium 228, Radium, combined (-226 & -228), Selenium, Total Dissolved Solids, Turbidity
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
Santevia
Bath Filter
NSF Certified:
Flow Rate
0.36 gpm
Highlights:
- Organic cotton design reduces plastic used in construction
- Affordable upfront & ongoing cost
- The only bath filter that removed 100% chlorine with “normal” faster faucet flow
Removes 1 contaminants:
Verify Your Water Quality with Independent Testing
With 3 contaminants above EPA MCLGs and 2 above EPA's legal limit (MCL, enforceable from April 26, 2029) and 3 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
PFAS Forever Chemicals Test
$339.95
Specialized test for PFOA, PFOS, and 24 other forever chemicals. Essential for areas near military bases, airports, or industrial sites.
Tap Score
Haloacetic Acids (HAA9) Test
$275
Tests for disinfection byproducts formed when chlorine reacts with organic matter in water treatment.
With 5 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 Seymour's water readings can explain
Utility-reported data for Seymour includes turbidity, sulfate and a chlorine-based disinfectant — the readings behind these common tap water questions. We publish a city-level hardness figure for Seymour, resolved from its water systems where they report one and estimated from county sampling where they do not. Each page starts with the hot-tap and cold-tap check, then shows what your own water system reported.
On a private well near Seymour? Public-water results do not apply to private wells. See Naugatuck Valley Planning Region well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in Seymour
Seymour's tap water measures 2.3 grains per gallon (39.5 mg/L) — soft on the USGS scale, below the range where scale is usually worth treating.
Water softener cost for 2.3 gpg water in Seymour — equipment and local installation labour for your ZIP code, with the sizing arithmetic shown in full. For the national picture first, read what a water softener costs — equipment, installation labour and ten-year ownership, each separated out. For Connecticut as a whole, read water softener cost in Connecticut — priced against the plumber wage published for the state.
Frequently Asked Questions About Seymour Tap Water
Seymour's water has 3 contaminants above EPA MCLGs and 2 above EPA's legal limit (MCL, enforceable from April 26, 2029). 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 Seymour's water.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach AQUARION WATER CO OF CT-VALLEY SYSTEM. For a problem with your water now (discolored water, no water, low pressure, a leak), contact AQUARION WATER CO OF CT-VALLEY SYSTEM directly.
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