Is Stockley Center Tap Water Safe? Quality Report

Water source: Ground water
Ownership: State government
Counties served: Sussex

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
Other	Monitoring	Resolved	2025-07-01
Other	Monitoring	Resolved	2025-07-01
MR	Monitoring	Resolved	2023-10-01
MR	Monitoring	Resolved	2023-10-01
MR	Monitoring	Resolved	2023-10-01
Other	Monitoring	Resolved	2022-07-01
Other	Monitoring	Resolved	2022-07-01
Other	Monitoring	Resolved	2021-07-01
Other	Monitoring	Resolved	2021-07-01
Other	Monitoring	Resolved	2010-07-01

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	127.5 µg/L 9.8% of the EPA limit 1300 µg/L worst single sample: 254 µg/L	31/41	SYR4	2013–2019
Lead	209.5 µg/L 1397% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 331 µg/L	16/41	SYR4	2013–2019
Nitrate	7504 µg/L 75% of the EPA limit 10000 µg/L	16/34	SYR4	2012–2019
Lead	0.0016 mg/L 11% of the EPA limit 0.0150 mg/L	14/14	LCR	2025
Nitrate-Nitrite	7498.89 µg/L 75% of the EPA limit 10000 µg/L worst single sample: 7504 µg/L	8/17	SYR4	2012–2019
Bromodichloromethane	6.078 µg/L No EPA limit set worst single sample: 6.12 µg/L	5/5	SYR4	2014–2019
Chloroform	27.74 µg/L No EPA limit set worst single sample: 28.3 µg/L	5/5	SYR4	2014–2019
Combined Radium (-226 And -228)	0.9906 pCi/L 20% of the EPA limit 5 pCi/L worst single sample: 0.9920 pCi/L	5/5	SYR4	2014–2015
Dibromochloromethane	4.698 µg/L No EPA limit set worst single sample: 4.79 µg/L	5/5	SYR4	2014–2019
Barium	259.151 µg/L 13% of the EPA limit 2000 µg/L worst single sample: 263.72 µg/L	4/4	SYR4	2018–2019
Bromoform	2.363 µg/L No EPA limit set worst single sample: 2.4 µg/L	3/5	SYR4	2014–2019
TTHM	33.516 µg/L 42% of the EPA limit 80 µg/L worst single sample: 35.6 µg/L	3/3	SYR4	2014–2019
Dibromoacetic Acid	1.3638 µg/L No EPA limit set worst single sample: 1.38 µg/L	2/2	SYR4	2014–2019
Total Haloacetic Acids (HAA5)	3.2448 µg/L 5.4% of the EPA limit 60 µg/L worst single sample: 3.36 µg/L	2/2	SYR4	2014–2019
Dalapon	0.7700 µg/L 0.4% of the EPA limit 200 µg/L	1/4	SYR4	2012–2019
Di(2-ethylhexyl) Adipate	0.2300 µg/L 0.1% of the EPA limit 400 µg/L	1/4	SYR4	2012–2019
Di(2-ethylhexyl) Phthalate	0.2800 µg/L 4.7% of the EPA limit 6 µg/L	1/4	SYR4	2012–2019
Dichloroacetic Acid	1.98 µg/L No EPA limit set	1/2	SYR4	2014–2019
Selenium	1.01 µg/L 2% of the EPA limit 50 µg/L	1/4	SYR4	2018–2019

56 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, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDinosebEthylene DibromideEndrinEthylbenzeneFluorideHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Frequently asked questions about Stockley Center

Is Stockley Center tap water safe to drink?

EPA monitoring detected 19 contaminants in Stockley Center'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 Stockley Center's water?

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

How many people does Stockley Center serve?

Stockley Center reports serving 749 people, per its EPA record.

Has Stockley Center had any water quality violations?

The EPA has 18 violations on file for Stockley Center, 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.