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Tap water quality report

City of Leander

EPA monitoring tested this supplier for 108 contaminants and detected 24. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

108
contaminants tested
24
detected
98,330
people served
1
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
Surface water
Ownership
Local government
Counties served
Williamson

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.

1
health-based violations
31
violations on file
4
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1993-12-01 → 1993-12-31
MR Monitoring Resolved 2026-01-01
MR Monitoring Resolved 2026-01-01
MR Monitoring Resolved 2026-01-01
Other Monitoring Unaddressed 2025-10-26
RPT Monitoring Unaddressed 2025-07-02
Other Monitoring Unaddressed 2025-07-01
Other Monitoring Unaddressed 2025-01-18
MR Monitoring Resolved 2024-10-01
MR Monitoring Resolved 2024-10-01

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.0051 µg/L 2/8 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
Chloroform
12.88 µg/L
No EPA limit set
worst single sample: 18.9 µg/L
133/133 SYR4 2012–2019
Dichloroacetic Acid
10.675 µg/L
No EPA limit set
worst single sample: 12.6 µg/L
126/126 SYR4 2012–2019
TTHM
48.725 µg/L 61%
of the EPA limit 80 µg/L
worst single sample: 58.7 µg/L
126/126 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
20.2 µg/L 34%
of the EPA limit 60 µg/L
worst single sample: 22.2 µg/L
126/126 SYR4 2012–2019
Bromodichloromethane
14.62 µg/L
No EPA limit set
worst single sample: 21.9 µg/L
119/133 SYR4 2012–2019
Dibromochloromethane
17.4 µg/L
No EPA limit set
worst single sample: 20.9 µg/L
95/133 SYR4 2012–2019
Copper
689.75 µg/L 53%
of the EPA limit 1300 µg/L
worst single sample: 910 µg/L
92/95 SYR4 2013–2017
Trichloroacetic Acid
3.435 µg/L
No EPA limit set
worst single sample: 4.6 µg/L
92/126 SYR4 2012–2019
Dibromoacetic Acid
7.03 µg/L
No EPA limit set
worst single sample: 8.3 µg/L
79/126 SYR4 2012–2019
Bromoform
6.4275 µg/L
No EPA limit set
worst single sample: 7.49 µg/L
66/133 SYR4 2012–2019
Lead
4.584 µg/L 31%
of the EPA limit 15 µg/L
worst single sample: 6.9 µg/L
32/95 SYR4 2013–2017
Nitrate
534.5 µg/L 5.3%
of the EPA limit 10000 µg/L
worst single sample: 540 µg/L
32/32 SYR4 2012–2019
Lead
0.0011 mg/L 7.3%
of the EPA limit 0.0150 mg/L
 19/19 LCR 2026
Monobromoacetic Acid
3.07 µg/L
No EPA limit set
worst single sample: 3.2 µg/L
14/126 SYR4 2012–2019
Monochloroacetic Acid
4.28 µg/L
No EPA limit set
worst single sample: 4.7 µg/L
13/126 SYR4 2012–2019
Barium
68.33 µg/L 3.4%
of the EPA limit 2000 µg/L
worst single sample: 70.1 µg/L
7/7 SYR4 2013–2019
Cyanide
147.5 µg/L 74%
of the EPA limit 200 µg/L
worst single sample: 150 µg/L
6/6 SYR4 2014–2019
Fluoride
272.5 µg/L 6.8%
of the EPA limit 4000 µg/L
worst single sample: 280 µg/L
6/6 SYR4 2014–2019
Arsenic
1.81 µg/L 18%
of the EPA limit 10 µg/L
 1/7 SYR4 2013–2019
Chromium
0.7800 µg/L 0.8%
of the EPA limit 100 µg/L
 1/7 SYR4 2013–2019
Gross Beta Particle Activity
4.5 pCi/L
No EPA limit set
 1/2 SYR4 2015–2018
Nitrate-Nitrite
300 µg/L 3%
of the EPA limit 10000 µg/L
 1/1 SYR4 2012
Selenium
2.48 µg/L 5%
of the EPA limit 50 µg/L
 1/7 SYR4 2013–2019
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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
SEDERQUIST, CHRISTINE
Phone
512-259-1142
Email
[email protected]

Frequently asked questions about City of Leander

Is City of Leander tap water safe to drink?

EPA monitoring detected 24 contaminants in City of Leander'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 City of Leander's water?

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

How many people does City of Leander serve?

City of Leander reports serving 98,330 people in Texas, per its EPA record.

Has City of Leander had any water quality violations?

The EPA has 31 violations on file for City of Leander, of which 1 is health-based (a contaminant limit or required treatment was breached) and 4 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.