Is Naval Support Activity-Nw Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Federal government

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
RPT	Monitoring	Resolved	2026-02-01
Other	Monitoring	Resolved	1999-10-19
Other	Monitoring	Resolved	1999-10-19
MR	Monitoring	Resolved	1996-01-01
MR	Monitoring	Resolved	1996-01-01
MR	Monitoring	Resolved	1996-01-01
MR	Monitoring	Resolved	1996-01-01

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
Copper	504 µg/L 39% of the EPA limit 1300 µg/L worst single sample: 566 µg/L	27/27	SYR4	2012–2018
TTHM	66.4475 µg/L 83% of the EPA limit 80 µg/L worst single sample: 75.5 µg/L	18/18	SYR4	2012–2019
Lead	3 µg/L 20% of the EPA limit 15 µg/L	17/26	SYR4	2012–2018
Total Haloacetic Acids (HAA5)	18.25 µg/L 30% of the EPA limit 60 µg/L worst single sample: 19 µg/L	16/16	SYR4	2012–2019
Chloroform	9.2 µg/L No EPA limit set worst single sample: 9.8 µg/L	13/13	SYR4	2016–2019
Dibromochloromethane	20.42 µg/L No EPA limit set worst single sample: 22.4 µg/L	13/13	SYR4	2016–2019
Bromodichloromethane	17.215 µg/L No EPA limit set worst single sample: 19.8 µg/L	12/12	SYR4	2016–2019
Bromoform	6.75 µg/L No EPA limit set worst single sample: 8.4 µg/L	12/12	SYR4	2016–2019
Lead	0.0030 mg/L 20% of the EPA limit 0.0150 mg/L	11/11	LCR	2023
Dibromoacetic Acid	6 µg/L No EPA limit set	8/8	SYR4	2016–2019
Dichloroacetic Acid	4.65 µg/L No EPA limit set worst single sample: 5 µg/L	8/8	SYR4	2016–2019
Trichloroacetic Acid	3 µg/L No EPA limit set	8/8	SYR4	2016–2019
Fluoride	298.5 µg/L 7.5% of the EPA limit 4000 µg/L worst single sample: 300 µg/L	4/4	SYR4	2012–2018
Combined Radium (-226 And -228)	0.6850 pCi/L 14% of the EPA limit 5 pCi/L worst single sample: 0.7000 pCi/L	2/2	SYR4	2013–2014
Dichloromethane	9.245 µg/L 185% of the EPA limit, at the 95th percentile of samples — 5 µg/L worst single sample: 9.7 µg/L	2/17	SYR4	2012–2019
Gross Beta Particle Activity	4.925 pCi/L No EPA limit set worst single sample: 5 pCi/L	2/2	SYR4	2013–2014
Xylenes, Total	5.185 µg/L 0.1% of the EPA limit 10000 µg/L worst single sample: 5.3 µg/L	2/16	SYR4	2012–2019
Antimony, Total	1 µg/L 17% of the EPA limit 6 µg/L	1/7	SYR4	2012–2018
Benzene	1 µg/L 20% of the EPA limit 5 µg/L	1/16	SYR4	2012–2019
Ethylbenzene	0.7000 µg/L 0.1% of the EPA limit 700 µg/L	1/16	SYR4	2012–2019

33 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-DichloropropaneArsenicBariumBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumCombined UraniumEthylene DibromideGross Alpha, Excl. Radon And UMercuryMonobromoacetic AcidMonochloroacetic AcidNitrate-NitriteSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: GEHRING, REBECCA E.
Phone: 757-836-1862
Email: rebecca.e.gehring.civ@navy.mil

Frequently asked questions about Naval Support Activity-Nw

Is Naval Support Activity-Nw tap water safe to drink?

EPA monitoring detected 20 contaminants in Naval Support Activity-Nw'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 Naval Support Activity-Nw's water?

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

How many people does Naval Support Activity-Nw serve?

Naval Support Activity-Nw reports serving 1,400 people in Virginia, per its EPA record.

Has Naval Support Activity-Nw had any water quality violations?

The EPA has 7 violations on file for Naval Support Activity-Nw, of which 0 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.