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Local water dashboard

Official source aggregation

Water quality in Mars Hill, ME 04758

A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Aroostook County.

2 reported benchmark flags
Primary matched system
Mars Hill And Blaine Water Company
Source water
Groundwater
County
Aroostook County
Profile updated

At a glance

What the current records say

Hardness

Moderately Hard

76.1 PPM · 4.5 GPG

Compliance screen

No active flag

0 active health-based records

Lead 90th percentile

0.0034 mg/L

23% of action level

Utility match

1 system

Serves 1,500 people system-wide

Hardness meter

How hard is the water?

Moderately Hard

Estimated local hardness

USGS hardness classification scale

76.1 PPM

Soft
0–59Moderate
60–120Hard
121–180Very hard
181+

Parts per million

76.1

mg/L as CaCO₃ equivalent

Grains per gallon

4.5

1 GPG ≈ 17.1 PPM

What this means at home

At 76.1 PPM, mineral scale can build up on fixtures and heating elements, reduce soap lather, and leave visible spotting. Hardness is primarily an aesthetic and appliance concern—not itself a tap-water safety rating.

USGS sites used

1

Nearest site

63 mi

Observation range

Jul 11, 2023–Jul 11, 2023

Estimate confidence

Low

Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: ME-WW 1021 (Well).USGS source documentation ↗

Regional context

Is 04758 typical?

These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.

Mars Hill median

76 PPM

About the same

1 indexed ZIP readings · Range 76.1–76.1 PPM

Maine median

39 PPM

37 PPM higher

122 indexed ZIP readings · Range 3.2–94.5 PPM

EPA benchmark screen

Contaminant snapshot

Available numerical results from associated SDWIS community water systems, compared with the applicable action level or federal MCL. Federal measured-value coverage is incomplete.

1 pass2 fail

Lead (PB90)

0.0034 mg/L

Reported Dec 31, 2025

Copper (CU90)

Not available

No numerical 90th-percentile result

Numerical coverage

3 comparable results

Missing values remain blank; absence is not treated as a pass.

Lead (90th percentile)

Measured in mg/L

Pass

Local 0.0034

EPA limit 0.015

Local level is 23% of the listed EPA limit.

Total Haloacetic Acids (HAA5)

Measured in MG/L

Fail

Local 0.082

EPA limit 0.06

Local level is 137% of the listed EPA limit.

TTHM

Measured in MG/L

Fail

Local 0.091

EPA limit 0.08

Local level is 114% of the listed EPA limit.

Share of EPA benchmark

100% line = listed limit

EPA SDWIS compliance

Reported violation history

Open EPA source documentation ↗
2026Q2
All records
53
Health-based
13
Active health-based
0
Contaminant or ruleSystemStatusPeriod
Total Haloacetic Acids (HAA5)ME0090940ArchivedJan 1, 2025through Dec 31, 2025
TTHMME0090940ArchivedJan 1, 2025through Dec 31, 2025
Combined Radium (-226 and -228)ME0090940ResolvedOct 1, 2023through Dec 31, 2023
Combined Radium (-226 and -228)ME0090940ResolvedJul 1, 2023through Sep 30, 2023
Total Haloacetic Acids (HAA5)Health-basedReported 0.082 MG/L · MCL 0.06ME0090940ResolvedApr 1, 2023through Jun 30, 2023
Total Haloacetic Acids (HAA5)Health-basedReported 0.084 MG/L · MCL 0.06ME0090940ResolvedJan 1, 2023through Mar 31, 2023
ArsenicME0090940ResolvedJan 1, 2023through Dec 31, 2023
BariumME0090940ResolvedJan 1, 2023through Dec 31, 2023
CadmiumME0090940ResolvedJan 1, 2023through Dec 31, 2023
ChromiumME0090940ResolvedJan 1, 2023through Dec 31, 2023
FluorideME0090940ResolvedJan 1, 2023through Dec 31, 2023
MercuryME0090940ResolvedJan 1, 2023through Dec 31, 2023
NickelME0090940ResolvedJan 1, 2023through Dec 31, 2023
Antimony, TotalME0090940ResolvedJan 1, 2023through Dec 31, 2023
Thallium, TotalME0090940ResolvedJan 1, 2023through Dec 31, 2023
Beryllium, TotalME0090940ResolvedJan 1, 2023through Dec 31, 2023
SeleniumME0090940ResolvedJan 1, 2023through Dec 31, 2023
NitrateME0090940ResolvedJan 1, 2023through Dec 31, 2023
Total Haloacetic Acids (HAA5)Health-basedReported 0.088 MG/L · MCL 0.06ME0090940ResolvedOct 1, 2022through Dec 31, 2022
Consumer Confidence RuleME0090940ResolvedJul 1, 2022through Mar 17, 2023

No reported violation does not prove that every contaminant was tested or absent; SDWIS measured values are incomplete and lag state records.

Solutions matcher

Your personalized water action plan

Matched to Mars Hill ZIP 04758 using 76.1 PPM nearby hardness and 3 reported measurement benchmarks.

1 match

Drinking water protection

Under-Sink Reverse Osmosis System

Total Haloacetic Acids (HAA5), TTHM have a measured benchmark flag or active health-based SDWIS record in this profile.

A certified multi-stage RO system targets a broader range of dissolved contaminants at the kitchen tap.

Explore under-sink filtration

Affiliate disclosure: we may earn a commission from qualifying purchases, at no added cost to you. Product matching is educational and does not replace certified water testing.

Frequently asked

Water questions for Mars Hill

Is tap water safe in Mars Hill?+

EPA ECHO shows no active health-based violation for the associated systems in this reporting snapshot. This does not prove every contaminant is absent; federal records can lag and household plumbing can change tap conditions.

How hard is the water?+

Nearby USGS observations produce an estimate of 76.1 PPM, or 4.5 grains per gallon, classified as moderately hard. This is not a household tap measurement.

Do I need a water softener?+

There is no high-hardness trigger in this profile. Confirm with a tap test before buying equipment.