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Tap water quality report

Horizon City, TX

EPA monitoring detected 23 contaminants across the 1 water supplier serving Horizon City. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

1
water supplier
31,542
people served
23
contaminants found
Texas rankings Lead in Texas PFAS in Texas

What was found in Horizon City's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
6860 µg/L 69%
of the EPA limit 10000 µg/L
 1/1 SYR4
Nitrate-Nitrite
6860 µg/L 69%
of the EPA limit 10000 µg/L
 1/1 SYR4
Fluoride
762 µg/L 19%
of the EPA limit 4000 µg/L
 1/1 SYR4
Copper
299 µg/L 23%
of the EPA limit 1300 µg/L
 1/1 SYR4
Lithium
81.5 µg/L
No EPA limit set
 1/1 UCMR-5
TTHM
49.8 µg/L 62%
of the EPA limit 80 µg/L
 1/1 SYR4
Bromoform
44.3 µg/L
No EPA limit set
 1/1 SYR4
Barium
33 µg/L 1.7%
of the EPA limit 2000 µg/L
 1/1 SYR4
Total Haloacetic Acids (HAA5)
21.3 µg/L 36%
of the EPA limit 60 µg/L
 1/1 SYR4
Monochloroacetic Acid
16.1 µg/L
No EPA limit set
 1/1 SYR4
Arsenic
15.2 µg/L 152%
of the EPA limit, in the worst sample — 10 µg/L
 1/1 SYR4
Selenium
10 µg/L 20%
of the EPA limit 50 µg/L
 1/1 SYR4
Dibromochloromethane
9.93 µg/L
No EPA limit set
 1/1 SYR4
Chromium
7.7 µg/L 7.7%
of the EPA limit 100 µg/L
 1/1 SYR4
Gross Beta Particle Activity
6.5 pCi/L
No EPA limit set
 1/1 SYR4
Dibromoacetic Acid
5.2 µg/L
No EPA limit set
 1/1 SYR4
Combined Uranium
4.5 µg/L 15%
of the EPA limit 30 µg/L
 1/1 SYR4
Lead
4.3 µg/L 29%
of the EPA limit 15 µg/L
 1/1 SYR4
Gross Alpha, Excl. Radon And U
4 pCi/L 27%
of the EPA limit 15 pCi/L
 1/1 SYR4
Dichloroacetic Acid
2.1 µg/L
No EPA limit set
 1/1 SYR4
Bromodichloromethane
1.85 µg/L
No EPA limit set
 1/1 SYR4
Monobromoacetic Acid
1.1 µg/L
No EPA limit set
 1/1 SYR4
Lead
0.00071 mg/L 4.7%
of the EPA limit 0.0150 mg/L
 1/1 LCR
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. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Horizon City

SupplierPopulation served
HORIZON REGIONAL MUD 31,542

Frequently asked questions about Horizon City tap water

Is Horizon City tap water safe to drink?

EPA testing detected 23 contaminants in the water serving Horizon City. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Horizon City?

1 public water supplier report drinking-water monitoring for Horizon City, Texas to the EPA. Each is listed above with its population served.

What contaminants are in Horizon City's water?

The contaminants EPA monitoring detected in Horizon City include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Lithium. The full list, with the highest level found and the data source, is in the table above.

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.