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Tap water quality report

Town of Leonardtown

EPA monitoring tested this supplier for 71 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

71
contaminants tested
11
detected
5,000
people served
2
health-based violations
Maryland rankingsLead in MarylandPFAS in Maryland
Water source
Ground water
Ownership
Local government
Counties served
St. Mary's

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.

2
health-based violations
35
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2016-06-01 → 2016-06-30
MCL Health-based Resolved 2016-06-01 → 2016-06-30
MR Monitoring Resolved 2024-01-01 → 2024-12-31
MR Monitoring Resolved 2024-01-01 → 2024-12-31
MR Monitoring Resolved 2024-01-01 → 2024-12-31
MR Monitoring Resolved 2024-01-01 → 2024-12-31
MR Monitoring Resolved 2024-01-01 → 2024-12-31
MR Monitoring Resolved 2024-01-01 → 2024-12-31
MR Monitoring Resolved 2020-10-01
MR Monitoring Resolved 2019-01-01 → 2019-12-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2023
Fluoride
455.5 µg/L 11%
of the EPA limit 4000 µg/L
worst single sample: 460 µg/L
10/10 SYR4 2012–2019
TTHM
5.9 µg/L 7.4%
of the EPA limit 80 µg/L
worst single sample: 6 µg/L
6/7 SYR4 2014–2019
Total Haloacetic Acids (HAA5)
2.6 µg/L 4.3%
of the EPA limit 60 µg/L
worst single sample: 2.7 µg/L
5/7 SYR4 2014–2019
Barium
84.4 µg/L 4.2%
of the EPA limit 2000 µg/L
worst single sample: 97 µg/L
4/8 SYR4 2012–2019
Arsenic
6.9 µg/L 69%
of the EPA limit 10 µg/L
worst single sample: 7 µg/L
3/9 SYR4 2012–2019
Bromodichloromethane
1.7 µg/L
No EPA limit set
 1/3 SYR4 2012–2014
Chloroform
3.2 µg/L
No EPA limit set
 1/3 SYR4 2012–2014
Dibromochloromethane
1.1 µg/L
No EPA limit set
 1/3 SYR4 2012–2014
Selenium
1.3 µg/L 2.6%
of the EPA limit 50 µg/L
 1/8 SYR4 2012–2019
Trichloroacetic Acid
1.1 µg/L
No EPA limit set
 1/2 SYR4 2014
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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitrateNitrate-NitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MCKAY, LASCHELLE
Phone
301-475-9791
Email
[email protected]

Frequently asked questions about Town of Leonardtown

Is Town of Leonardtown tap water safe to drink?

EPA monitoring detected 11 contaminants in Town of Leonardtown'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 Town of Leonardtown's water?

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

How many people does Town of Leonardtown serve?

Town of Leonardtown reports serving 5,000 people in Maryland, per its EPA record.

Has Town of Leonardtown had any water quality violations?

The EPA has 35 violations on file for Town of Leonardtown, of which 2 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.