Topsham, ME water hardness

Tap water hardness
39mg/L
2.3gpg
Soft

Reported by Brunswick/Topsham Water District · January 2025

ME typical
16 mg/L
EPA health violations since 2016
0
Data
Utility report

The water in Topsham carries roughly 39 mg/L of dissolved calcium and magnesium, or 2.3 grains per gallon. That is soft water. The number comes from Brunswick/Topsham Water District, dated January 2025.

Topsham on the hardness scale, with nearby cities
060120180240300360+ME typical 16Portland: 8 mg/LPortland 8South Portland: 8 mg/LSouth Portland 8Gorham: 8 mg/LGorham 8Bath: 9 mg/LBath 9Brunswick: 14 mg/LBrunswick 14Lewiston: 16 mg/LLewiston 16Yarmouth: 76 mg/LYarmouth 76Auburn: 89 mg/LAuburn 89Gardiner: 96 mg/LGardiner 96Augusta: 136 mg/LAugusta 136Topsham 39mg/L as calcium carbonate060120180240300360+ME 16Bath: 9 mg/LBath 9Brunswick: 14 mg/LBrunswick 14Lewiston: 16 mg/LLewiston 16Yarmouth: 76 mg/LYarmouth 76Auburn: 89 mg/LAuburn 89Gardiner: 96 mg/LGardiner 9639 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Topsham sits 23 mg/L above the typical Maine figure of 16. Of the 10 nearest cities we track, 6 have softer water and 4 have harder. The range nearby runs from 8 mg/L in Portland to 136 in Augusta.

What 39 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 39 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 Topsham's water system

Brunswick/Topsham Water District · PWSID ME0090260

No health-based violations since 2016

Serves about 18,863 people from groundwater.

Health-based
0
Monitoring or reporting
0
Open now
0

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 Topsham water hard?

No. It measures about 39 mg/L (2.3 grains per gallon), which the USGS classes as soft.

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

About 2.3 gpg. One grain per gallon equals 17.1 mg/L, so 39 mg/L divided by 17.1 gives 2.3.

Has the Topsham water system had EPA violations?

EPA records show no health-based violations for Brunswick/Topsham Water District since 2016.

Nearby cities

All 23 cities in Maine

Hardness data: TapWaterData US Water Hardness (utility report, January 15, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.