Tap WaterIndex

← Maryland

Tap water quality report

Stoney Chase/ Rock Creek M.H.P.S

EPA monitoring tested this supplier for 72 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

72
contaminants tested
12
detected
396
people served
7
health-based violations
Maryland rankingsLead in MarylandPFAS in Maryland
Water source
Ground water
Ownership
Private
Counties served
Cecil

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.

7
health-based violations
20
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 1995-01-01 → 1996-03-20
TT Health-based Resolved 1995-01-01 → 1996-03-20
TT Health-based Resolved 1995-01-01 → 1996-03-20
TT Health-based Resolved 1994-01-01 → 1994-03-30
TT Health-based Resolved 1994-01-01 → 1994-03-30
TT Health-based Resolved 1994-01-01 → 1994-03-30
RPT Monitoring Resolved 2024-10-17
MR Monitoring Resolved 2001-01-01
MR Monitoring Resolved 2001-01-01

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
2600 µg/L 26%
of the EPA limit 10000 µg/L
 12/16 SYR4 2012–2019
Lead
0.0018 mg/L 12%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2023
Bromoform
0.9880 µg/L
No EPA limit set
worst single sample: 1.06 µg/L
5/5 SYR4 2013–2016
Dibromochloromethane
0.9085 µg/L
No EPA limit set
worst single sample: 0.9100 µg/L
4/4 SYR4 2013–2016
TTHM
1.618 µg/L 2%
of the EPA limit 80 µg/L
worst single sample: 1.63 µg/L
4/5 SYR4 2013–2017
Dibromoacetic Acid
1.199 µg/L
No EPA limit set
worst single sample: 1.24 µg/L
3/3 SYR4 2013–2014
Total Haloacetic Acids (HAA5)
1.199 µg/L 2%
of the EPA limit 60 µg/L
worst single sample: 1.24 µg/L
3/4 SYR4 2013–2017
Fluoride
105 µg/L 2.6%
of the EPA limit 4000 µg/L
worst single sample: 110 µg/L
2/4 SYR4 2012–2019
Gross Alpha, Excl. Radon And U
4.28 pCi/L 29%
of the EPA limit 15 pCi/L
worst single sample: 4.3 pCi/L
2/2 SYR4 2013–2016
Gross Beta Particle Activity
6.035 pCi/L
No EPA limit set
worst single sample: 6.1 pCi/L
2/2 SYR4 2013–2016
Chromium
1.4 µg/L 1.4%
of the EPA limit 100 µg/L
 1/4 SYR4 2012–2019
Combined Radium (-226 And -228)
0.4000 pCi/L 8%
of the EPA limit 5 pCi/L
 1/2 SYR4 2013–2016
60 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-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitrate-NitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
DAGRACA, GEORGE
Email
[email protected]

Frequently asked questions about Stoney Chase/ Rock Creek M.H.P.S

Is Stoney Chase/ Rock Creek M.H.P.S tap water safe to drink?

EPA monitoring detected 12 contaminants in Stoney Chase/ Rock Creek M.H.P.S'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 Stoney Chase/ Rock Creek M.H.P.S's water?

EPA monitoring detected Nitrate, Lead, Bromoform, Dibromochloromethane, TTHM, and others. The full list with the level and data source for each is above.

How many people does Stoney Chase/ Rock Creek M.H.P.S serve?

Stoney Chase/ Rock Creek M.H.P.S reports serving 396 people in Maryland, per its EPA record.

Has Stoney Chase/ Rock Creek M.H.P.S had any water quality violations?

The EPA has 20 violations on file for Stoney Chase/ Rock Creek M.H.P.S, of which 7 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.