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City water profile

Bristol water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Bristol, Connecticut.

Median indexed hardness

47PPM

2 indexed ZIPs

Range 45.4–47.6 PPM

State comparison
6 PPM below
State hardness rank
#35 of 52
Matched utilities
3
Active health records
0

City summary

What the indexed records say

Bristol has 2 published ZIP profiles across Hartford County. The indexed median is 47 PPM, compared with 53 PPM across Connecticut.

Among the 52 Connecticutcities with an indexed median, Bristol ranks #35from highest to lowest. Across all 98 state ZIP profiles, available estimates run from 42.8to 114 PPM.

The 45.4–47.6 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft2 ZIPs
Moderately hard0 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: 0Moderate: 2Low: 0

Observation window: Jan 4, 2016 to Jun 4, 2026.

ZIP directory

Water reports in Bristol

Open a ZIP for site-level provenance and measurements.

ZIP code

06010

Soft

45.4 PPM

Nearest site
2.2 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

06062

Soft

47.6 PPM

Nearest site
2.1 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Bristol Water Department

PWSID CT0170011

Surface water
System population served
52,079
Last reported
Jun 29, 2026

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

Aquarion-Plainville Regional

PWSID CT1100011

Groundwater
System population served
18,231
Last reported
Jun 29, 2026

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

Ctwc - Unionville System

PWSID CT0520011

Surface water
System population served
14,693
Last reported
Jun 29, 2026

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

Compliance history

What EPA records show

No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Groundwater RuleCT0520011May 1, 2026Archived · health-based
Groundwater RuleCT1100011Feb 1, 2026Archived · health-based
Consumer Confidence RuleCT0170011Aug 10, 2025Resolved
Consumer Confidence RuleCT0170011Jul 1, 2022Resolved
Consumer Confidence RuleCT1100011Aug 10, 2021Resolved
Consumer Confidence RuleCT1100011Jul 1, 2021Resolved

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. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Bristol

Is the water hard?

The indexed city median is 47 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

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.