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Tap water quality report

Hillsborough Water Works

EPA monitoring tested this supplier for 77 contaminants and detected 13. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

77
contaminants tested
13
detected
2,000
people served
354
health-based violations
New Hampshire rankingsLead in New HampshirePFAS in New Hampshire
Water source
Surface water
Ownership
Local government
Counties served
Hillsborough

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.

354
health-based violations
730
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2014-10-01 → 2014-12-31
MCL Health-based Resolved 2014-10-01 → 2014-12-31
MCL Health-based Resolved 2014-10-01 → 2014-12-31
MCL Health-based Resolved 2014-10-01 → 2014-12-31
MCL Health-based Resolved 2014-07-01 → 2014-09-30
MCL Health-based Resolved 2014-07-01 → 2014-09-30
MCL Health-based Resolved 2014-07-01 → 2014-09-30
MCL Health-based Resolved 2014-07-01 → 2014-09-30
MCL Health-based Resolved 2014-07-01 → 2014-09-30
MCL Health-based Resolved 2014-07-01 → 2014-09-30

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
Chloroform
9.47 µg/L
No EPA limit set
worst single sample: 12 µg/L
27/27 SYR4 2014–2019
Copper
490 µg/L 38%
of the EPA limit 1300 µg/L
worst single sample: 670 µg/L
25/26 SYR4 2014–2019
Dichloroacetic Acid
19 µg/L
No EPA limit set
worst single sample: 20 µg/L
21/21 SYR4 2014–2019
TTHM
9.5 µg/L 12%
of the EPA limit 80 µg/L
worst single sample: 12 µg/L
21/21 SYR4 2014–2019
Total Haloacetic Acids (HAA5)
26.9 µg/L 45%
of the EPA limit 60 µg/L
worst single sample: 28.4 µg/L
21/21 SYR4 2014–2019
Trichloroacetic Acid
4.705 µg/L
No EPA limit set
worst single sample: 4.8 µg/L
20/21 SYR4 2014–2019
Lead
22.6 µg/L 151%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 33 µg/L
9/20 SYR4 2016–2019
Monochloroacetic Acid
3.96 µg/L
No EPA limit set
worst single sample: 4 µg/L
9/21 SYR4 2014–2019
Barium
5 µg/L 0.3%
of the EPA limit 2000 µg/L
 6/6 SYR4 2014–2019
Lead
0.0330 mg/L 220%
above the EPA limit of 0.0150 mg/L
 5/5 LCR 2010
Bromodichloromethane
0.5975 µg/L
No EPA limit set
worst single sample: 0.6000 µg/L
2/27 SYR4 2014–2019
Combined Radium (-226 And -228)
0.9000 pCi/L 18%
of the EPA limit 5 pCi/L
 1/1 SYR4 2016
Gross Alpha, Excl. Radon And U
0.4000 pCi/L 2.7%
of the EPA limit 15 pCi/L
 1/1 SYR4 2016
64 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, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDibromochloromethaneDinosebDiquatEthylene DibromideEndrinEthylbenzeneFluorideGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNitrateNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
ALEXANDER MELLEN

Frequently asked questions about Hillsborough Water Works

Is Hillsborough Water Works tap water safe to drink?

EPA monitoring detected 13 contaminants in Hillsborough Water Works'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 Hillsborough Water Works's water?

EPA monitoring detected Chloroform, Copper, Dichloroacetic Acid, TTHM, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does Hillsborough Water Works serve?

Hillsborough Water Works reports serving 2,000 people in New Hampshire, per its EPA record.

Has Hillsborough Water Works had any water quality violations?

The EPA has 730 violations on file for Hillsborough Water Works, of which 354 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.