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Water Hardness in Presque Isle, ME

Maine · 1 zip codes · 5 matched water systems

155 PPM
9.1 GPG
Moderately Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 20265 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

Source context

How this city reading is built

This city reading is a weighted rollup across 5 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
5 USGS-backed sources
5 matched systems total for this city; 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 in Presque Isle

These systems are matched to Presque Isle, ME. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.

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.
Presque Isle Utilities District
ME0091310
Moderately Hard
153 PPMsurface water6,128 servedHigh Confidence — USGS Monitoring
Town And Country Apartments
ME0092359
Hard
199 PPMgroundwater136 servedHigh Confidence — USGS Monitoring
Mcculley Commons Apartments
ME0092175
Hard
199 PPMgroundwater73 servedHigh Confidence — USGS Monitoring
Maple Tree Estates
ME0092160
Hard
199 PPMgroundwater62 servedHigh Confidence — USGS Monitoring
Aroostook Rental Housing Llc
ME0092382
Hard
199 PPMgroundwater42 servedHigh Confidence — USGS Monitoring

Zip Codes in Presque Isle, ME

What This Means For You

Recommendations are based on the displayed 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 Presque Isle, ME.

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Frequently Asked Questions

How hard is the water in Presque Isle, ME?

The citywide weighted average water hardness in Presque Isle, ME is 155 PPM (9.1 GPG), classified as moderately hard. This is based on 5 matched water systems.

Do I need a water softener in Presque Isle, ME?

With a citywide average hardness of 155 PPM, a water softener is worth considering for homes in Presque Isle. Confirm your tap reading before sizing equipment.

Is hard water in Presque Isle, ME 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 Presque Isle, ME?

Presque Isle, Maine is served by 5 matched water systems across 1 zip code.

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