Lead pipes in New Hampshire

New Hampshire's 706 community water systems reported 233 lead and 2,085 galvanized-requiring-replacement service lines, plus 121,835 of unknown material. That ranks #44 among states for confirmed lead lines.

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233Lead

2,085Galvanized, replace

121,835Unknown

58Systems with lead

• Lead 0.2%
• Galvanized (replace) 1.7%
• Unknown 98%
• Non-lead <0.1%

1.9% of the service lines New Hampshire utilities reported are lead or galvanized requiring replacement, well below the national share of 3.1%. 98% are still unidentified (national: 21%). The largest counts are in Pennichuck Water Works (870), Claremont Water Dept (225), Somersworth Water Works (191). 312 systems haven't reported counts yet.

Since 2025 Q1, reported lead and galvanized lines in New Hampshire went from 2,318 to 2,318 (down 0). See which systems made the most progress.

Systems with confirmed lead lines (58)

Water system	Lead	Galv.	Unknown	% lead	People
Pennichuck Water WorksNashua	0	870	486	64%	88,853
Claremont Water DeptClaremont	220	5	1,348	14%	9,000
Somersworth Water WorksSomersworth	0	191	2,240	7.9%	12,200
Concord Water DeptConcord	0	159	749	18%	44,215
Portsmouth Water WorksPortsmouth	0	140	3,108	4.3%	33,000
Lebanon Water DeptLebanon	0	109	1,183	8.4%	13,600
Lancaster Water DeptLancaster	0	82	1,070	7.1%	2,500
Farmington Water DeptFarmington	0	70	1,008	6.5%	3,250
Laconia Water WorksLaconia	0	53	177	23%	17,125
N Swanzey Water and Fire PRCTSwanzey	0	38	70	35%	1,700
Littleton Water and LightLittleton	0	34	239	12%	6,500
Hinsdale Water Dept/DowntownHinsdale	0	29	354	7.6%	1,600
Newport Water WorksNewport	0	25	1,494	1.6%	5,000
North Conway Water PCTConway	0	23	1,197	1.9%	5,500
Rollinsford Water Sewer DistRollinsford	2	21	516	4.3%	1,688
Troy Water WorksTroy	0	23	430	5.1%	1,200
Hillsborough Water WorksHillsborough	0	22	301	6.8%	2,000
Newmarket Water WorksNewmarket	0	16	0	100%	5,030
Carroll Water WorksCarroll	0	15	413	3.5%	875
Derry Water DeptDerry	0	14	3,050	0.5%	17,528
Gorham Water and Sewer DeptGorham	0	14	901	1.5%	2,630
Franconia Village WaterFranconia	0	13	119	9.8%	535
Bristol Water WorksBristol	10	2	1,177	1.0%	3,575
Lily Pond MHPGilford	0	10	0	100%	26
Plymouth VLG Water and SewerPlymouth	0	9	362	2.4%	6,700
Aquarion Water/NhHampton	0	8	9,878	<0.1%	34,000
Groveton Water SysNorthumberland	0	7	687	1.0%	2,650
North Stratford Water DeptStratford	0	7	23	23%	300
Peterborough Water WorksPeterborough	0	6	2,146	0.3%	4,500
Exeter Water DeptExeter	0	6	1,732	0.3%	12,236
Pembroke Water WorksPembroke	0	5	2,169	0.2%	5,200
Antrim Dpw/Utilities DivAntrim	0	5	316	1.6%	920
New Castle Water WorksNew Castle	0	5	105	4.5%	910
Raymond Water DeptRaymond	0	4	1,675	0.2%	3,300
North Hinsdale Water DeptHinsdale	0	4	511	0.8%	1,800
Meriden Village Water DistPlainfield	0	4	74	5.1%	750
Hanover Water DeptHanover	0	4	73	5.2%	9,600
Pittsburg Water DeptPittsburg	0	4	0	100%	233
Tilton Northfield Water DistNorthfield	0	3	858	0.3%	2,500
Ashland Water DeptAshland	0	3	279	1.1%	1,525
Lower Bartlett Water PCTBartlett	0	3	0	100%	3,850
Greenville Water DeptGreenville	0	2	361	0.6%	1,100
Bennington Water DeptBennington	0	2	185	1.1%	775
Woodsville Water and LightHaverhill	0	2	135	1.5%	1,950
Keene Water DeptKeene	0	2	0	100%	30,000
Unh/Durham Water SysDurham	0	1	876	0.1%	16,000
Cogswell Springs Water WorksHenniker	0	1	570	0.2%	3,000
Belmont Water DeptBelmont	0	1	569	0.2%	1,612
Rye Water DistRye	0	1	211	0.5%	4,300
Wilton Water WorksWilton	0	1	181	0.5%	1,790
New Hampton Village PCTNew Hampton	0	1	138	0.7%	600
Francestown Village WaterFrancestown	0	1	61	1.6%	130
Precinct of Haverhill CornerHaverhill	0	1	30	3.2%	540
Canaan Water DeptCanaan	0	1	21	4.5%	684
W Stewartstown Water PCTStewartstown	0	1	16	5.9%	428
Central Hooksett Water PCTHooksett	0	1	0	100%	4,650
N Walpole Village District/LowWalpole	1	0	0	100%	625
Errol Water Works/WestErrol	0	1	0	100%	183

No confirmed lead, but unknown lines remain (336)

Water system	Lead	Galv.	Unknown	% lead	People
Manchester Water WorksManchester	0	0	17,297	0%	123,500
Dover Water DeptDover	0	0	7,939	0%	29,000
Merrimack Village DistMerrimack	0	0	6,549	0%	25,500
Milford Water Utilities DeptMilford	0	0	2,945	0%	9,500
Wolfeboro Water and SewerWolfeboro	0	0	2,294	0%	6,000
Franklin Water WorksFranklin	0	0	1,577	0%	7,200
Jaffrey Water WorksJaffrey	0	0	1,426	0%	3,800
Village Dist of EastmanGrantham	0	0	1,329	0%	3,400
Charlestown Water WorksCharlestown	0	0	1,304	0%	2,850
Woodstock Water DeptWoodstock	0	0	1,205	0%	2,950
Lincoln Water WorksLincoln	0	0	1,204	0%	3,300
Seabrook Water DeptSeabrook	0	0	1,198	0%	14,000
Penacook Boscawen Water PCTBoscawen	0	0	1,166	0%	3,800
Waterville Valley Water DistWaterville Valley	0	0	1,055	0%	3,150
Meredith Water DeptMeredith	0	0	958	0%	3,750
Bethlehem Village DistBethlehem	0	0	878	0%	1,750
Berlin Water WorksBerlin	0	0	839	0%	9,575
Epping Water and Sewer DeptEpping	0	0	739	0%	1,600
Winchester Water DeptWinchester	0	0	701	0%	2,800
Contoocook Village PCTHopkinton	0	0	628	0%	1,600
Exeter River Mobile Home ParkExeter	0	0	518	0%	980
Lisbon Water DeptLisbon	0	0	498	0%	1,010
Whitefield WaterWhitefield	0	0	497	0%	1,640
Village District of EidelweissMadison	0	0	496	0%	1,200
Hampstead Area WaterHampstead	0	0	470	0%	7,153
Hooksett Village Water PCTHooksett	0	0	456	0%	3,000
Enfield Water DeptEnfield	0	0	449	0%	1,345
Sunapee Water WorksSunapee	0	0	448	0%	1,680
Milton Water DistMilton	0	0	432	0%	800
Paradise ShoresMoultonborough	0	0	410	0%	2,060
Pittsfield AqueductPittsfield	0	0	407	0%	1,625
Rosebrook WaterCarroll	0	0	402	0%	1,050
Gunstock Acres Village DistGilford	0	0	401	0%	1,440
Walpole Water DeptWalpole	0	0	383	0%	1,057
Waterville Estate VLG Dist/WCampton	0	0	382	0%	1,250
Mountain Lakes Water DistrictHaverhill	0	0	349	0%	787
Ossipee Water DeptOssipee	0	0	347	0%	860
Emerald LakeHillsborough	0	0	344	0%	1,300
Sanbornville Water DeptWakefield	0	0	324	0%	1,425
Lake Shore ParkGilford	0	0	323	0%	150
Bear View CrossingAllenstown	0	0	314	0%	800
Warner Village Water DistWarner	0	0	314	0%	660
Epsom Village Water DistrictEpsom	0	0	295	0%	800
River RunExeter	0	0	286	0%	411
Alton Water WorksAlton	0	0	259	0%	1,800
Lov WaterFreedom	0	0	259	0%	590
Marlborough Water WorksMarlborough	0	0	240	0%	750
Bartlett Village PCTBartlett	0	0	233	0%	625
River Run CondosBartlett	0	0	213	0%	750
Newfields VLG Water and SewerNewfields	0	0	182	0%	550

Showing 50. See all

No lead or unknown lines reported (10)

Systems serving 1,000 or more people. Systems without counts on file are listed as 0.

Water system	Lead	Galv.	Unknown	% lead	People
Rochester Water DeptRochester	0	0	0	–	25,000
Hudson Water DeptHudson	0	0	0	–	16,700
LitchfieldLitchfield	0	0	0	–	6,920
Goffstown Village PCTGoffstown	0	0	0	–	3,250
Little Pond EstatesBedford	0	0	0	–	3,000
Locke LakeBarnstead	0	0	0	–	2,308
Drew WoodsDerry	0	0	0	–	1,413
Rockingham County ComplexBrentwood	0	0	0	–	1,387
Colebrook Water WorksColebrook	0	0	0	–	1,300
Powder HillBedford	0	0	0	–	1,148

Lead pipes in New Hampshire cities

• Manchester17,297 unknown
• Nashua870 lead + galv. lines
• Dover7,939 unknown
• Rochesterno lead reported
• Portsmouth140 lead + galv. lines
• Laconia53 lead + galv. lines
• Lebanon109 lead + galv. lines
• Somersworth191 lead + galv. lines
• Franklin1,577 unknown

All New Hampshire cities and towns · Lead pipes by county

New Hampshire lead pipe questions

How many lead pipes are in New Hampshire?

New Hampshire's community water systems reported 233 lead service lines and 2,085 galvanized lines that must be replaced, for 2,318 in total. Another 121,835 lines are of unknown material.

Which New Hampshire water systems have the most lead pipes?

Pennichuck Water Works (870), Claremont Water Dept (225), Somersworth Water Works (191). Counts are lead plus galvanized-requiring-replacement lines.

What share of New Hampshire service lines are lead?

1.9% of reported service lines in New Hampshire are lead or galvanized requiring replacement, well below the national figure of 3.1%. 98% are still unknown, compared with 21% nationally.

How do I find out if my New Hampshire home has a lead service line?

Search for your water system or ZIP code above, then open your utility's address-level inventory map. You can also check the pipe where it enters your home with a scratch and magnet test.

Source: EPA SDWIS service line inventory, 2026 Q3. Smaller systems with no lead or unknown lines are omitted. See also national rankings.