Attleboro, MA water hardness

Tap water hardness
56mg/L
3.3gpg
Soft

Reported by Attleboro Water Dept · April 2025

MA typical
38 mg/L
EPA health violations since 2016
1
Data
Utility report

The water in Attleboro carries roughly 56 mg/L of dissolved calcium and magnesium, or 3.3 grains per gallon. That is soft water. The number comes from Attleboro Water Dept, dated April 2025.

Attleboro on the hardness scale, with nearby cities
060120180240300360+MA typical 38Somerset: 45 mg/LSomerset 45Taunton: 47 mg/LTaunton 47Sharon: 47 mg/LSharon 47Foxborough: 48 mg/LFoxborough 48Brockton: 49 mg/LBrockton 49Mansfield Center: 50 mg/LMansfield Center 50Bridgewater: 62 mg/LBridgewater 62Walpole: 66 mg/LWalpole 66Franklin: 69 mg/LFranklin 69North Attleborough: 71 mg/LNorth Attleborough 71Attleboro 56mg/L as calcium carbonate060120180240300360+MA 38Taunton: 47 mg/LTaunton 47Sharon: 47 mg/LSharon 47Foxborough: 48 mg/LFoxborough 48Mansfield Center: 50 mg/LMansfield. 50Franklin: 69 mg/LFranklin 69North Attleborough: 71 mg/LNorth Attl. 7156 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Attleboro sits 18 mg/L above the typical Massachusetts figure of 38. Of the 10 nearest cities we track, 6 have softer water and 4 have harder. The range nearby runs from 45 mg/L in Somerset to 71 in North Attleborough.

What 56 mg/L means at home

Soap and shampoo lather with very little product. Kettles and showerheads stay mostly free of white crust.

Some people notice that soap feels slow to rinse off in soft water. That slippery feel is normal and harmless.

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

Nothing, as far as hardness goes. At 56 mg/L a softener would have almost nothing to remove.

Carbon filter

If the water tastes of chlorine, a pitcher or faucet carbon filter takes care of that. It does not change hardness.

EPA record for Attleboro's water system

Attleboro Water Dept · PWSID MA4016000

1 health-based violation since 2016

Serves about 46,461 people from surface water.

Health-based
1
Monitoring or reporting
0
Open now
0
20162017201820192020202120222023202420252026Total trihalomethanes (TTHM)'16'18'20'22'24'26Total trihalomethanes (TTHM)
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Total trihalomethanes (TTHM)a disinfection byproduct12018Resolved

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 Attleboro water hard?

No. It measures about 56 mg/L (3.3 grains per gallon), which the USGS classes as soft.

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

About 3.3 gpg. One grain per gallon equals 17.1 mg/L, so 56 mg/L divided by 17.1 gives 3.3.

Has the Attleboro water system had EPA violations?

EPA records show 1 health-based violation for Attleboro Water Dept since 2016, involving Total trihalomethanes (TTHM).

Nearby cities

All 104 cities in Massachusetts

Hardness data: TapWaterData US Water Hardness (utility report, April 23, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.