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Water Hardness in 13624

Frontenac, New York · Jefferson County

148 PPM
8.7 GPG
Moderately Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 5 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

How this ZIP reading is built

This ZIP reading is built from 5 matched water systems. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.

Source basis
5 USGS-backed sources
5 matched systems total for this ZIP; USGS monitoring is used where treated-water reports are unavailable.
Water source profile
Primarily surface water
Surface-water hardness can shift with reservoirs, runoff, season, and treatment. This profile is weighted by known population served across matched systems.
Data recency
March 9, 2026
Dataset rebuilt March 9, 2026; individual utility reporting years can vary.

Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.

Water Systems Serving 13624

These are the systems matched to this ZIP code. The displayed ZIP value is weighted toward larger known service populations when population data is available.

5 water systems
PWSID is the public water system identifier. Data Source shows whether the hardness value comes from a treated-water report, USGS monitoring, or a local estimate; source year is shown when available.
Fort Drum
NY2212214
Hard
227 PPMsurface water34,000 servedHigh Confidence — USGS Monitoring
Watertown City
NY2202346
Soft
42 PPMsurface water27,861 servedHigh Confidence — USGS Monitoring
Clayton Village
NY2202335
Very Hard
263 PPMsurface water2,100 servedHigh Confidence — USGS Monitoring
Southside Water Inc.
NY2221333
Very Hard
263 PPMsurface water195 servedHigh Confidence — USGS Monitoring
Riverwood Estates
NY2222606
Very Hard
263 PPMgroundwater30 servedHigh Confidence — USGS Monitoring

Nearby Zip Codes

What This Means For You

Recommendations are based on the displayed ZIP hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

Know your water hardness?

If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Frontenac, NY (13624).

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Frequently Asked Questions

Is the water hard in Frontenac, NY (13624)?

The average water hardness in 13624 is 148 PPM (8.7 GPG), which is classified as moderately hard.

Do I need a water softener in 13624?

With hardness of 148 PPM, a water softener is worth considering for homes in 13624.

Is hard water in 13624 safe to drink?

Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.

How many water systems serve 13624?

Zip code 13624 in Frontenac, New York is served by 5 water systems.

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