Is tap water safe in Watertown?

EPA SDWIS shows no active health-based violation in this profile's reporting window. That is not the same as proving every contaminant is absent, and federal data can lag state and utility records.

How hard is the water in Watertown, NY?

Nearby USGS observations produce an estimate of 7.2 ppm (0.4 grains per gallon), classified as soft. This is not a tap measurement.

Do I need a water softener in ZIP code 13601?

There is no high-hardness trigger in this profile. Confirm conditions with an at-home hardness test before purchasing equipment.

City water profile

Watertown water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Watertown, New York.

Median indexed hardness

7PPM

One indexed ZIP

Range 7.2–7.2 PPM

State comparison: 113 PPM below
State hardness rank: #55 of 55
Matched utilities: 1
Active health records: 0

City summary

What the indexed records say

Watertown has 1 published ZIP profile across Jefferson County. The indexed median is 7 PPM, compared with 120 PPM across New York.

Among the 55 New Yorkcities with an indexed median, Watertown ranks #55from highest to lowest. Across all 132 state ZIP profiles, available estimates run from 7.2to 290 PPM.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community.

Hardness distribution

How local ZIP estimates compare

Soft1 ZIP

Moderately hard0 ZIPs

Hard0 ZIPs

Very hard0 ZIPs

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance: 1.4 miles
Profiles with evidence: 1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Jan 12, 2016 to May 19, 2026.

ZIP directory

Water reports in Watertown

Open a ZIP for site-level provenance and measurements.

ZIP code

13601

Soft

7.2 PPM

Nearest site: 1.4 mi
Confidence: Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Watertown City

PWSID NY2202346

Surface water

System population served: 27,861
Last reported: Jun 25, 2026

A municipal system, in-state city, and served county all agree with this Census 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.

Record	System	Period	Status
Interim Enhanced Surface Water Treatment Rule	NY2202346	Dec 1, 2025	Resolved · health-based
TTHM	NY2202346	Jan 1, 2022	Archived · health-based
TTHM	NY2202346	Oct 1, 2021	Archived · health-based

Practical next steps

Move from index to evidence

1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Continue comparing

Other New York communities

Fort Drum

Jefferson County

8 PPM median

Saratoga Springs

Saratoga County

8 PPM median

Rome

Oneida County

9 PPM median

Ogdensburg

St. Lawrence County

9 PPM median

Mechanicville

Saratoga County

10 PPM median

Glens Falls

Warren County

10 PPM median

Search all 55 New York cities →

Questions people ask

About water in Watertown

Is the water hard?

The indexed city median is 7 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.