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City water profile

Water hardness in Bristol

Find official utility reports, understand hardness, and check the water system serving your home in Bristol, Connecticut.

Utility-reported hardness

Not yet available

Check your provider and source →
State comparison
Unavailable
Evidence comparison rank
—
Matched utilities
3
Active health records
0

Your tap water

What does the utility report?

Match the utility name to your water bill. These results describe the utility’s water, not a test at your home. A ZIP can include several water systems.

Utility hardness unavailable in this index

Nearby river or groundwater samples cannot tell us the hardness coming out of your tap. Ask your water provider for total hardness as CaCO₃, or test it at home.

Find an official utility report →
Convert a hardness result →Test your tap →

Match the name on your water bill

Your utility’s measurements and compliance records

These are possible serving systems. A record for one system does not apply to every home in this ZIP. Confirm your provider before interpreting a measurement or notice. Federal records can lag current utility notices.

EPA snapshot: 2026Q2. Historical window begins Jan 1, 2021.

Bristol Water Department

CT0170011 · Surface water · 52,079 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →
Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level
Reported level
0 mg/L
Action level
0.015 mg/L

0% of the listed benchmark

Monitoring period: Jan 1, 2025 to Dec 31, 2025

Violation history (2)
Imported violation history for Bristol Water Department
RuleStatusPeriod
Consumer Confidence RuleResolvedAug 10, 2025 to Sep 25, 2025
Consumer Confidence RuleResolvedJul 1, 2022 to Oct 5, 2022

Aquarion-Plainville Regional

CT1100011 · Groundwater · 18,231 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →
Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level
Reported level
0 mg/L
Action level
0.015 mg/L

0% of the listed benchmark

Monitoring period: Jul 1, 2025 to Dec 31, 2025

Violation history (3)
Imported violation history for Aquarion-Plainville Regional
RuleStatusPeriod
Groundwater RuleHealth-basedArchivedFeb 1, 2026 to Feb 28, 2026
Consumer Confidence RuleResolvedAug 10, 2021 to Jul 6, 2021
Consumer Confidence RuleResolvedJul 1, 2021 to Jul 6, 2021

Ctwc - Unionville System

CT0520011 · Surface water · 14,693 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →
Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level
Reported level
0.0024 mg/L
Action level
0.015 mg/L

16% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2025

Violation history (1)
Imported violation history for Ctwc - Unionville System
RuleStatusPeriod
Groundwater RuleHealth-basedArchivedMay 1, 2026 to May 31, 2026

City summary

What the indexed records say

Bristol has 2 published ZIP profiles across Hartford County. The regional-evidence median is 69 PPM. The city does not meet the stricter comparison standard.

The 69.3–69.3 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard2 ZIPs
Hard0 ZIPs
Very hard0 ZIPs

2 of 2 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
2.2 miles
Profiles with evidence
2/2

Confidence labels

High: 2Moderate: 0Low: 0

Observation window: May 9, 2016 to Jun 2, 2026.

ZIP directory

Water reports in Bristol

Open a ZIP for site-level provenance and measurements.

ZIP code

06010

Moderately Hard

69.3 PPM

Nearest site
2.2 mi
Confidence
High

View full ZIP evidence →

ZIP code

06062

Moderately Hard

69.3 PPM

Nearest site
2.1 mi
Confidence
High

View full ZIP evidence →

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Use a measured hardness result. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Bristol

Is the water hard?

Check the utility-reported result above when available. Nearby environmental samples cannot establish tap-water hardness. Ask your provider or test your tap.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.