Tap WaterIndex

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Tap water quality report

Johnson Creek

EPA monitoring tested this supplier for 74 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

74
contaminants tested
8
detected
63
people served
42
health-based violations
New Hampshire rankingsLead in New HampshirePFAS in New Hampshire
Water source
Ground water
Ownership
Private
Counties served
Strafford

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.

42
health-based violations
65
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2019-04-01 → 2019-06-30
MCL Health-based Resolved 2019-04-01 → 2019-06-30
MCL Health-based Resolved 2019-04-01 → 2019-06-30
MCL Health-based Resolved 2019-04-01 → 2019-06-30
MCL Health-based Resolved 2016-01-01 → 2016-03-31
MCL Health-based Resolved 2016-01-01 → 2016-03-31
MCL Health-based Resolved 2016-01-01 → 2016-03-31
MCL Health-based Resolved 2016-01-01 → 2016-03-31
MCL Health-based Resolved 2015-07-01 → 2015-09-30
MCL Health-based Resolved 2015-07-01 → 2015-09-30

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
Arsenic
14 µg/L 140%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
 27/27 SYR4 2014–2019
Copper
40.25 µg/L 3.1%
of the EPA limit 1300 µg/L
worst single sample: 44 µg/L
6/12 SYR4 2015–2019
Barium
12.9 µg/L 0.6%
of the EPA limit 2000 µg/L
worst single sample: 13 µg/L
2/2 SYR4 2016–2019
Fluoride
279.5 µg/L 7%
of the EPA limit 4000 µg/L
worst single sample: 280 µg/L
2/2 SYR4 2016–2019
Bromoform
1 µg/L
No EPA limit set
 1/4 SYR4 2015–2019
Combined Radium (-226 And -228)
1 pCi/L 20%
of the EPA limit 5 pCi/L
 1/1 SYR4 2014
Mercury
0.1000 µg/L 5%
of the EPA limit 2 µg/L
 1/2 SYR4 2016–2019
TTHM
1 µg/L 1.3%
of the EPA limit 80 µg/L
 1/1 SYR4 2017
66 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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumCombined UraniumDichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDibromochloromethaneDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitrateNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
STEPHEN FLAHERTY

Frequently asked questions about Johnson Creek

Is Johnson Creek tap water safe to drink?

EPA monitoring detected 8 contaminants in Johnson Creek'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 Johnson Creek's water?

EPA monitoring detected Arsenic, Copper, Barium, Fluoride, Bromoform, and others. The full list with the level and data source for each is above.

How many people does Johnson Creek serve?

Johnson Creek reports serving 63 people in New Hampshire, per its EPA record.

Has Johnson Creek had any water quality violations?

The EPA has 65 violations on file for Johnson Creek, of which 42 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.