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Tap water quality report

Sienna Management District

EPA monitoring tested this supplier for 14 contaminants and detected 13. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

14
contaminants tested
13
detected
300
people served
0
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
Ground water
Ownership
Local government
Counties served
Fort Bend

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
6
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2014-10-01
MR Monitoring Resolved 2014-10-01
MR Monitoring Resolved 2014-10-01
MR Monitoring Resolved 2014-10-01
MR Monitoring Resolved 2013-10-01
MR Monitoring Resolved 2013-01-01

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
520 µg/L 40%
of the EPA limit 1300 µg/L
 15/19 SYR4 2012–2019
Lead
20 µg/L 133%
of the EPA limit, in the worst sample — 15 µg/L
 8/19 SYR4 2012–2019
Lead
0.0014 mg/L 9.3%
of the EPA limit 0.0150 mg/L
 5/5 LCR 2025
Bromodichloromethane
14.2 µg/L
No EPA limit set
 2/2 SYR4 2016–2019
Bromoform
11 µg/L
No EPA limit set
 2/2 SYR4 2016–2019
Chloroform
8.9 µg/L
No EPA limit set
 2/2 SYR4 2016–2019
Dibromoacetic Acid
9.3 µg/L
No EPA limit set
 2/2 SYR4 2016–2019
Dibromochloromethane
17.2 µg/L
No EPA limit set
 2/2 SYR4 2016–2019
Dichloroacetic Acid
5.7 µg/L
No EPA limit set
 2/2 SYR4 2016–2019
TTHM
43.1 µg/L 54%
of the EPA limit 80 µg/L
 2/2 SYR4 2016–2019
Total Haloacetic Acids (HAA5)
21.4 µg/L 36%
of the EPA limit 60 µg/L
 2/2 SYR4 2016–2019
Trichloroacetic Acid
1.7 µg/L
No EPA limit set
 2/2 SYR4 2016–2019
Monochloroacetic Acid
7.1 µg/L
No EPA limit set
 1/2 SYR4 2016–2019
1 contaminants tested, none detected
Monobromoacetic Acid

Utility contact

Contact
BOWLES, CARL, S
Phone
281-500-6050

Frequently asked questions about Sienna Management District

Is Sienna Management District tap water safe to drink?

EPA monitoring detected 13 contaminants in Sienna Management District'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 Sienna Management District's water?

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

How many people does Sienna Management District serve?

Sienna Management District reports serving 300 people in Texas, per its EPA record.

Has Sienna Management District had any water quality violations?

The EPA has 6 violations on file for Sienna Management District, 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.