Where does the water in 13661 come from?

Water for zip code 13661 in Mannsville, New York is provided by 3 water systems. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 13661

Mannsville, New York · Jefferson County

144 PPM

8.4 GPG

Moderately Hard

0Soft60120180300+

High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 3 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 3 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

3 USGS-backed sources

3 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 13661

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.

3 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.

Water System	Source	Hardness	Pop. Served	Data Source
Fort Drum NY2212214	surface water	227 PPM Hard	34,000	High Confidence — USGS Monitoring
Watertown City NY2202346	surface water	42 PPM Soft	27,861	High Confidence — USGS Monitoring
Mannsville Village NY2202340	surface water	109 PPM Slightly Hard	450	High Confidence — USGS Monitoring

Fort Drum

NY2212214

Hard

227 PPMsurface water34,000 servedHigh Confidence — USGS Monitoring

Watertown City

NY2202346

Soft

42 PPMsurface water27,861 servedHigh Confidence — USGS Monitoring

Mannsville Village

NY2202340

Slightly Hard

109 PPMsurface water450 servedHigh Confidence — USGS Monitoring

Nearby Zip Codes

13145239 13605146 13083241 13650144 13142230 13144241 13606145 13659144 13682144 13685144 13302241 13437241

What This Means For You

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

Moderately Hard Water

Your water is moderately hard. You're likely seeing scale buildup on fixtures, spotty dishes, and may notice dry skin or hair. A water softener or conditioner can help.

Recommended Products

Water Hardness Test Kit

Our PickVarify (150 Strips)Also GreatJNW Direct (150 Strips)

Salt-Free Water Conditioner

Our PickSpringWell Salt-Free Cartridge

Salt-Based Water Softener

Our PickAFWFilters Fleck 5600SXT 48K Also GreatWhirlpool WHES40E 40K Also GreatAFWFilters 64K Grain Also GreatAFWFilters Iron Pro 2 64K Also GreatSpringWell Filter + Softener Combo

Shower Head Filter

Our PickWeddell Duo Also GreatAquaBliss SF100 Also GreatSprite Pure 7-Setting Also GreatAqua Earth 20-Stage

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | Size Calculator | How to Test Your Water

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 Mannsville, NY (13661).

Submit Your Data

Frequently Asked Questions

Is the water hard in Mannsville, NY (13661)?

The average water hardness in 13661 is 144 PPM (8.4 GPG), which is classified as moderately hard.

Do I need a water softener in 13661?

With hardness of 144 PPM, a water softener is worth considering for homes in 13661.

Is hard water in 13661 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 13661?

Zip code 13661 in Mannsville, New York is served by 3 water systems.