How hard is the water in Lynnfield, MA?

Tap water hardness
72mg/L
4.2gpg
Moderately hardReports range 72–143

Reported by North Reading Water Dept. · May 2025

MA typical
38 mg/L
EPA health violations since 2016
0
Softener for 3 people
24k grain
Data
Utility report

Tap water in Lynnfield has about 72 mg/L of hardness, which is 4.2 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from North Reading Water Dept., dated May 2025. Reports for this system disagree, with values from 72 to 143 mg/L.

Lynnfield on the hardness scale, with nearby cities
060120180240300360+MA typical 38Saugus: 10 mg/LSaugus 10Stoneham: 16 mg/LStoneham 16Melrose: 18 mg/LMelrose 18Reading: 22 mg/LReading 22Wakefield: 51 mg/LWakefield 51Lynn: 67 mg/LLynn 67Wilmington: 68 mg/LWilmington 68Woburn: 99 mg/LWoburn 99Peabody: 128 mg/LPeabody 128Danvers: 130 mg/LDanvers 130Lynnfield 72mg/L as calcium carbonate060120180240300360+MA 38Saugus: 10 mg/LSaugus 10Stoneham: 16 mg/LStoneham 16Reading: 22 mg/LReading 22Wakefield: 51 mg/LWakefield 51Peabody: 128 mg/LPeabody 128Danvers: 130 mg/LDanvers 13072 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

At 72 mg/L, Lynnfield is 34 mg/L above the typical Massachusetts figure of 38. Of the 10 nearest cities we track, 7 have softer water and 3 have harder. The range nearby runs from 10 mg/L in Saugus to 130 in Danvers.

What 72 mg/L means at home

You may see faint white spots on glasses and shower doors after the water dries.

Scale builds up slowly. A kettle or coffee maker needs descaling now and then, maybe every few months.

Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.

What to do about it

Optional. Plenty of households at this level live with it and descale the kettle now and then.

Water softener

Worth a look if spots on glass bother you, or if your tankless water heater manual asks for softer water.

Carbon filter

Improves taste and removes chlorine. It leaves calcium and magnesium in place.

Softener size for Lynnfield

3 people × 75 gallons a day × 4.2 gpg = 952 grains a day. A 24,000-grain unit regenerates about every 25 days.

Size it for your household

EPA record for Lynnfield's water system

Lynnfield Center Water District · PWSID MA3164000

No health-based violations since 2016

Serves about 8,525 people from surface water.

Health-based
0
Monitoring or reporting
4
Open now
1

EPA lists Lynnfield Center Water District as the system serving Lynnfield. The hardness figure above comes from a different system's report, which TapWaterData uses for Lynnfield.

Health-based means a contaminant above its legal limit or a missed treatment step. Monitoring and reporting violations are late or missing tests and notices. Source: EPA ECHO, 2026Q3 export, violations with periods starting 2016 or later. Full EPA record.

Questions

Is Lynnfield water hard?

Somewhat. It measures about 72 mg/L (4.2 grains per gallon), which the USGS classes as moderately hard.

What is the water hardness in Lynnfield in grains per gallon?

About 4.2 gpg. One grain per gallon equals 17.1 mg/L, so 72 mg/L divided by 17.1 gives 4.2.

What size water softener do I need in Lynnfield?

For 3 people using 75 gallons each per day, 4.2 gpg works out to about 952 grains a day. A 24,000-grain softener covers that with a regeneration about every 25 days.

Has the Lynnfield water system had EPA violations?

EPA records show no health-based violations for Lynnfield Center Water District since 2016. There were also 4 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 104 cities in Massachusetts

Hardness data: TapWaterData US Water Hardness (utility report, May 20, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.