Is Powder Hill Tap Water Safe? Quality Report

Water source: SWP
Ownership: Private
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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2005-04-01 → 2005-06-30
MCL	Health-based	Resolved	2005-04-01 → 2005-06-30
MCL	Health-based	Resolved	2005-04-01 → 2005-06-30
MCL	Health-based	Resolved	2005-04-01 → 2005-06-30
MCL	Health-based	Resolved	2005-01-01 → 2005-03-31
MCL	Health-based	Resolved	2005-01-01 → 2005-03-31
MCL	Health-based	Resolved	2005-01-01 → 2005-03-31
MCL	Health-based	Resolved	2005-01-01 → 2005-03-31
MCL	Health-based	Resolved	2004-10-01 → 2004-12-31
MCL	Health-based	Resolved	2004-10-01 → 2004-12-31

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Bromodichloromethane	1.9 µg/L No EPA limit set worst single sample: 5.6 µg/L	21/21	SYR4	2015–2019
Chloroform	3.2 µg/L No EPA limit set worst single sample: 20 µg/L	21/21	SYR4	2015–2019
Dichloroacetic Acid	7.3 µg/L No EPA limit set worst single sample: 11 µg/L	21/21	SYR4	2015–2019
TTHM	6 µg/L 7.5% of the EPA limit 80 µg/L worst single sample: 26 µg/L	21/21	SYR4	2015–2019
Total Haloacetic Acids (HAA5)	7.3 µg/L 12% of the EPA limit 60 µg/L worst single sample: 19 µg/L	21/21	SYR4	2015–2019
Dibromochloromethane	1.015 µg/L No EPA limit set worst single sample: 1.1 µg/L	18/21	SYR4	2015–2019
Copper	98.45 µg/L 7.6% of the EPA limit 1300 µg/L worst single sample: 119 µg/L	16/16	SYR4	2015–2018
Lead	2.615 µg/L 17% of the EPA limit 15 µg/L worst single sample: 2.7 µg/L	2/16	SYR4	2015–2018
Monobromoacetic Acid	2.1 µg/L No EPA limit set	1/21	SYR4	2015–2019
Trichloroacetic Acid	7.7 µg/L No EPA limit set	1/21	SYR4	2015–2019

3 contaminants tested, none detected

BromoformDibromoacetic AcidMonochloroacetic Acid

Utility contact

Contact: LESLIE MORGAN

Frequently asked questions about Powder Hill

Is Powder Hill tap water safe to drink?

EPA monitoring detected 10 contaminants in Powder Hill'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 Powder Hill's water?

EPA monitoring detected Bromodichloromethane, Chloroform, 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 Powder Hill serve?

Powder Hill reports serving 1,148 people in New Hampshire, per its EPA record.

Has Powder Hill had any water quality violations?

The EPA has 14 violations on file for Powder Hill, of which 12 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.