Is Knolls of Windsor Tap Water Safe? Quality Report

Water source: Ground water under surface influence
Ownership: Local government
Counties served: Frederick

Compliance record

No violations on file. The EPA has no formal drinking-water violations recorded for this supplier.

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
TTHM	30.6 µg/L 38% of the EPA limit 80 µg/L worst single sample: 35.6 µg/L	41/41	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	8.625 µg/L 14% of the EPA limit 60 µg/L worst single sample: 60 µg/L	26/41	SYR4	2012–2019
Bromodichloromethane	8.26 µg/L No EPA limit set worst single sample: 8.8 µg/L	22/22	SYR4	2012–2016
Chloroform	19.86 µg/L No EPA limit set worst single sample: 26.9 µg/L	22/22	SYR4	2012–2016
Dibromochloromethane	3.1 µg/L No EPA limit set	21/22	SYR4	2012–2016
Dichloroacetic Acid	5.79 µg/L No EPA limit set worst single sample: 6 µg/L	15/17	SYR4	2012–2015
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	10/10	LCR	2014
Nitrate	5700 µg/L 57% of the EPA limit 10000 µg/L	8/8	SYR4	2012–2014
Nitrate-Nitrite	5810 µg/L 58% of the EPA limit 10000 µg/L worst single sample: 5900 µg/L	7/7	SYR4	2015–2019
Bromoform	1.3 µg/L No EPA limit set	5/22	SYR4	2012–2016
Dibromoacetic Acid	1.86 µg/L No EPA limit set worst single sample: 1.9 µg/L	5/17	SYR4	2012–2015
Trichloroacetic Acid	1.58 µg/L No EPA limit set worst single sample: 1.6 µg/L	5/17	SYR4	2012–2015
Barium	22.45 µg/L 1.1% of the EPA limit 2000 µg/L worst single sample: 23 µg/L	2/3	SYR4	2014–2017
Fluoride	551.5 µg/L 14% of the EPA limit 4000 µg/L worst single sample: 560 µg/L	2/3	SYR4	2014–2017

57 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, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: SMITH, JOSHUA
Phone: 301-600-2581
Email: [email protected]

Frequently asked questions about Knolls of Windsor

Is Knolls of Windsor tap water safe to drink?

EPA monitoring detected 14 contaminants in Knolls of Windsor'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 Knolls of Windsor's water?

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

How many people does Knolls of Windsor serve?

Knolls of Windsor reports serving 1,553 people in Maryland, per its EPA record.

Has Knolls of Windsor had any water quality violations?

The EPA has no formal drinking-water violations on file for Knolls of Windsor.

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.