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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 level at the main supplier 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 level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
6776 µg/L 68%
of the EPA limit 10000 µg/L
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2019
1/1 SYR4
Nitrate
6740 µg/L 67%
of the EPA limit 10000 µg/L
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2019
1/1 SYR4
Fluoride
725.7 µg/L 18%
of the EPA limit 4000 µg/L
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2018
1/1 SYR4
Copper
245.45 µg/L 19%
of the EPA limit 1300 µg/L
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2017
1/1 SYR4
Lithium
81.5 µg/L
No EPA limit set
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2024
1/1 UCMR-5
TTHM
44.415 µg/L 56%
of the EPA limit 80 µg/L
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2019
1/1 SYR4
Bromoform
36.125 µg/L
No EPA limit set
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2019
1/1 SYR4
Barium
31.1 µg/L 1.6%
of the EPA limit 2000 µg/L
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2018
1/1 SYR4
Arsenic
15.15 µg/L 152%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2018
1/1 SYR4
Monochloroacetic Acid
10.625 µg/L
No EPA limit set
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2019
1/1 SYR4
Selenium
9.7 µg/L 19%
of the EPA limit 50 µg/L
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2018
1/1 SYR4
Total Haloacetic Acids (HAA5)
9.7 µg/L 16%
of the EPA limit 60 µg/L
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2019
1/1 SYR4
Dibromochloromethane
9.083 µg/L
No EPA limit set
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2019
1/1 SYR4
Chromium
7.14 µg/L 7.1%
of the EPA limit 100 µg/L
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2018
1/1 SYR4
Gross Beta Particle Activity
6.435 pCi/L
No EPA limit set
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2015
1/1 SYR4
Combined Uranium
4.43 µg/L 15%
of the EPA limit 30 µg/L
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2015
1/1 SYR4
Lead
4.028 µg/L 27%
of the EPA limit 15 µg/L
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2017
1/1 SYR4
Gross Alpha, Excl. Radon And U
3.95 pCi/L 26%
of the EPA limit 15 pCi/L
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2015
1/1 SYR4
Dibromoacetic Acid
3.82 µg/L
No EPA limit set
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2019
1/1 SYR4
Dichloroacetic Acid
2.1 µg/L
No EPA limit set
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2019
1/1 SYR4
Bromodichloromethane
1.7465 µg/L
No EPA limit set
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2019
1/1 SYR4
Monobromoacetic Acid
1.1 µg/L
No EPA limit set
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2019
1/1 SYR4
Lead
0.00071 mg/L 4.7%
of the EPA limit 0.0150 mg/L
Main supplier: HORIZON REGIONAL MUD · 31,542 people · 2025
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 95th percentile of the system's samples — 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-Nitrite, Nitrate, Fluoride, Copper, Lithium. The full list, with the level at the main supplier 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.