Tap WaterIndex

Tap water quality report

Waldorf - Charles County Dpw

EPA monitoring tested this supplier for 105 contaminants and detected 21. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

105
contaminants tested
21
detected
84,296
people served
0
health-based violations
Water source
SWP
Ownership
Local government
Counties served
Charles

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.

0
health-based violations
20
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Archived 2025-10-01 → 2025-12-31
MR Monitoring Archived 2025-10-01 → 2025-12-31
MR Monitoring Archived 2025-07-01 → 2025-09-30
MR Monitoring Archived 2025-07-01 → 2025-09-30
MR Monitoring Resolved 2023-10-01
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2017-10-01

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfpea 0.0060 µg/L 4/36 2025
Pfhxa 0.0051 µg/L 3/36 2025
PFBS 0.0031 µg/L 1/36 2025

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
TTHM
82.355 µg/L 103%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 120.1 µg/L
232/256 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
39.15 µg/L 65%
of the EPA limit 60 µg/L
worst single sample: 116.6 µg/L
204/256 SYR4 2012–2019
Chloroform
37.12 µg/L
No EPA limit set
worst single sample: 86.7 µg/L
89/105 SYR4 2012–2015
Bromodichloromethane
14.3 µg/L
No EPA limit set
worst single sample: 21.1 µg/L
78/106 SYR4 2012–2015
Dichloroacetic Acid
8.595 µg/L
No EPA limit set
worst single sample: 12 µg/L
71/96 SYR4 2012–2014
Dibromochloromethane
4.185 µg/L
No EPA limit set
worst single sample: 6.22 µg/L
50/108 SYR4 2012–2015
Trichloroacetic Acid
15.65 µg/L
No EPA limit set
worst single sample: 20 µg/L
48/96 SYR4 2012–2014
Fluoride
916 µg/L 23%
of the EPA limit 4000 µg/L
worst single sample: 1200 µg/L
33/33 SYR4 2012–2019
Nitrate
1000 µg/L 10%
of the EPA limit 10000 µg/L
 28/86 SYR4 2012–2015
Barium
374 µg/L 19%
of the EPA limit 2000 µg/L
worst single sample: 380 µg/L
27/32 SYR4 2012–2019
Gross Alpha, Excl. Radon And U
15.33 pCi/L 102%
of the EPA limit, at the 95th percentile of samples — 15 pCi/L
worst single sample: 27.1 pCi/L
27/27 SYR4 2012–2019
Combined Radium (-226 And -228)
2.62 pCi/L 52%
of the EPA limit 5 pCi/L
worst single sample: 2.8 pCi/L
19/26 SYR4 2012–2019
Gross Beta Particle Activity
12.975 pCi/L
No EPA limit set
worst single sample: 13.2 pCi/L
16/25 SYR4 2012–2018
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2023
Chromium
16.9 µg/L 17%
of the EPA limit 100 µg/L
worst single sample: 18 µg/L
3/37 SYR4 2012–2019
Dibromoacetic Acid
2.46 µg/L
No EPA limit set
worst single sample: 2.6 µg/L
3/99 SYR4 2012–2014
Selenium
6.055 µg/L 12%
of the EPA limit 50 µg/L
worst single sample: 6.1 µg/L
2/36 SYR4 2012–2019
Monochloroacetic Acid
4.68 µg/L
No EPA limit set
 1/99 SYR4 2012–2014
84 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitrate-NitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Frequently asked questions about Waldorf - Charles County Dpw

Is Waldorf - Charles County Dpw tap water safe to drink?

EPA monitoring detected 21 contaminants in Waldorf - Charles County Dpw'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 Waldorf - Charles County Dpw's water?

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

How many people does Waldorf - Charles County Dpw serve?

Waldorf - Charles County Dpw reports serving 84,296 people, per its EPA record.

Has Waldorf - Charles County Dpw had any water quality violations?

The EPA has 20 violations on file for Waldorf - Charles County Dpw, 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.