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City water profile

Middletown water quality

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

Median indexed hardness

46PPM

2 indexed ZIPs

Range 46.1–46.1 PPM

State comparison
7 PPM below
State hardness rank
#38 of 52
Matched utilities
4
Active health records
1

City summary

What the indexed records say

Middletown has 2 published ZIP profiles across Middlesex County. The indexed median is 46 PPM, compared with 53 PPM across Connecticut.

Among the 52 Connecticutcities with an indexed median, Middletown ranks #38from highest to lowest. Across all 98 state ZIP profiles, available estimates run from 42.8to 114 PPM.

The 46.1–46.1 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
5.3 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 Middletown

Open a ZIP for site-level provenance and measurements.

ZIP code

06457

Soft

46.1 PPM

Nearest site
5.3 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

06459

Soft

46.1 PPM

Nearest site
4.9 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Middletown Water Department

PWSID CT0830011

Surface water
System population served
41,019
Last reported
Jun 29, 2026

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

Berlin Water Control Commission

PWSID CT0070021

Surface water
System population served
5,128
Last reported
Jun 29, 2026

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

Portland Water Department

PWSID CT1130011

Surface water
System population served
5,010
Last reported
Jun 29, 2026

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

Connecticut Valley Hospital

PWSID CT0830021

Surface water
System population served
2,928
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

1 unique active health-based record appears among associated systems. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Lead and Copper RuleCT1130011Dec 30, 2025Resolved
Consumer Confidence RuleCT0830011Aug 10, 2025Resolved
Consumer Confidence RuleCT0830011Jul 1, 2025Resolved
Consumer Confidence RuleCT0830021Jul 1, 2025Resolved
LEAD AND COPPER RULE REVISIONSCT0070021Oct 17, 2024Unaddressed · health-based
Consumer Confidence RuleCT0830021Jul 1, 2024Resolved
cis-1,2-DichloroethyleneCT0070021Jan 1, 2024Resolved
DICHLOROMETHANECT0070021Jan 1, 2024Resolved
o-DichlorobenzeneCT0070021Jan 1, 2024Resolved
Carbon tetrachlorideCT0070021Jan 1, 2024Resolved

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 Middletown

Is the water hard?

The indexed city median is 46 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.