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Tap water quality report

Walpole Water Dept

EPA monitoring tested this supplier for 75 contaminants and detected 13. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

75
contaminants tested
13
detected
1,057
people served
15
health-based violations
New Hampshire rankingsLead in New HampshirePFAS in New Hampshire
Water source
Ground water
Ownership
Local government
Counties served
Cheshire

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

15
health-based violations
531
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1991-04-01 → 1991-04-30
MCL Health-based Resolved 1991-04-01 → 1991-04-30
MCL Health-based Resolved 1991-04-01 → 1991-04-30
MCL Health-based Resolved 1991-04-01 → 1991-04-30
MCL Health-based Resolved 1991-04-01 → 1991-04-30
MCL Health-based Resolved 1991-04-01 → 1991-04-30
MCL Health-based Resolved 1991-04-01 → 1991-04-30
MCL Health-based Resolved 1991-03-01 → 1991-03-31
MCL Health-based Resolved 1991-03-01 → 1991-03-31
MCL Health-based Resolved 1991-03-01 → 1991-03-31

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
3600 µg/L 36%
of the EPA limit 10000 µg/L
worst single sample: 3900 µg/L
58/60 SYR4 2014–2019
Copper
197 µg/L 15%
of the EPA limit 1300 µg/L
worst single sample: 340 µg/L
24/24 SYR4 2014–2018
Lead
8.175 µg/L 55%
of the EPA limit 15 µg/L
worst single sample: 15 µg/L
16/20 SYR4 2015–2018
Bromodichloromethane
1.25 µg/L
No EPA limit set
worst single sample: 1.3 µg/L
6/18 SYR4 2014–2019
Dibromochloromethane
1.75 µg/L
No EPA limit set
worst single sample: 1.8 µg/L
6/18 SYR4 2014–2019
TTHM
4.1 µg/L 5.1%
of the EPA limit 80 µg/L
worst single sample: 4.2 µg/L
6/6 SYR4 2014–2019
Barium
9.85 µg/L 0.5%
of the EPA limit 2000 µg/L
worst single sample: 10 µg/L
4/4 SYR4 2014–2017
Chloroform
0.7840 µg/L
No EPA limit set
worst single sample: 0.8000 µg/L
3/18 SYR4 2014–2019
Bromoform
1.185 µg/L
No EPA limit set
worst single sample: 1.2 µg/L
2/18 SYR4 2014–2019
Combined Radium (-226 And -228)
0.1950 pCi/L 3.9%
of the EPA limit 5 pCi/L
worst single sample: 0.2000 pCi/L
2/2 SYR4 2016
Fluoride
129.5 µg/L 3.2%
of the EPA limit 4000 µg/L
worst single sample: 130 µg/L
2/4 SYR4 2014–2017
Combined Uranium
1.5 µg/L 5%
of the EPA limit 30 µg/L
 1/2 SYR4 2016
Gross Alpha, Excl. Radon And U
1.2 pCi/L 8%
of the EPA limit 15 pCi/L
 1/2 SYR4 2016
62 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
JODI DAIGLE

Frequently asked questions about Walpole Water Dept

Is Walpole Water Dept tap water safe to drink?

EPA monitoring detected 13 contaminants in Walpole Water Dept's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Walpole Water Dept's water?

EPA monitoring detected Nitrate, Copper, Lead, Bromodichloromethane, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Walpole Water Dept serve?

Walpole Water Dept reports serving 1,057 people in New Hampshire, per its EPA record.

Has Walpole Water Dept had any water quality violations?

The EPA has 531 violations on file for Walpole Water Dept, of which 15 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.