Where does the water in 12842 come from?

Water for zip code 12842 in Indian Lake, New York is provided by 2 water systems. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 12842

Indian Lake, New York · Hamilton County

90 PPM

5.3 GPG

Slightly Hard

0Soft60120180300+

High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 2 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 2 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

2 USGS-backed sources

2 matched systems total for this ZIP; USGS monitoring is used where treated-water reports are unavailable.

Water source profile

Primarily groundwater

Groundwater commonly picks up calcium and magnesium after contact with rock and soil. 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 12842

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.

2 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
Indian Lake Wd NY2000126	groundwater	127 PPM Moderately Hard	900	High Confidence — USGS Monitoring
Blue Mt Lake Wd NY2000135	surface water	6 PPM Soft	400	High Confidence — USGS Monitoring

Indian Lake Wd

NY2000126

Moderately Hard

127 PPMgroundwater900 servedHigh Confidence — USGS Monitoring

Blue Mt Lake Wd

NY2000135

Soft

6 PPMsurface water400 servedHigh Confidence — USGS Monitoring

Nearby Zip Codes

12856112 121645 12853111 1281240 1285123 1219084 12843112 1210840 1285711 12886112 1285212 1343640

What This Means For You

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

Slightly Hard Water

Your water is slightly hard. You may notice minor spotting on dishes or a slight film on faucets. A water softener is optional but can improve water quality.

Recommended Products

Water Hardness Test Kit

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

Salt-Free Water Conditioner

Our PickSpringWell Salt-Free Cartridge

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | 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 Indian Lake, NY (12842).

Submit Your Data

Frequently Asked Questions

Is the water hard in Indian Lake, NY (12842)?

The average water hardness in 12842 is 90 PPM (5.3 GPG), which is classified as slightly hard.

Do I need a water softener in 12842?

At 90 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 12842 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 12842?

Zip code 12842 in Indian Lake, New York is served by 2 water systems.