Tap WaterIndex

← Texas

Tap water quality report

El Lago, TX

EPA monitoring detected 22 contaminants across the 1 water supplier serving El Lago. 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
3,924
people served
22
contaminants found
Texas rankings Lead in Texas PFAS in Texas

What was found in El Lago'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
1141 µg/L 11%
of the EPA limit 10000 µg/L
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2015
1/1 SYR4
Copper
1026.4 µg/L 79%
of the EPA limit 1300 µg/L
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2017
1/1 SYR4
Nitrate
1010 µg/L 10%
of the EPA limit 10000 µg/L
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2019
1/1 SYR4
Fluoride
448.5 µg/L 11%
of the EPA limit 4000 µg/L
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2017
1/1 SYR4
Nitrite
182 µg/L 18%
of the EPA limit 1000 µg/L
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2015
1/1 SYR4
TTHM
66 µg/L 83%
of the EPA limit 80 µg/L
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2019
1/1 SYR4
Barium
48.37 µg/L 2.4%
of the EPA limit 2000 µg/L
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
39.95 µg/L 67%
of the EPA limit 60 µg/L
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2019
1/1 SYR4
Chloroform
39.325 µg/L
No EPA limit set
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2019
1/1 SYR4
Dichloroacetic Acid
27.75 µg/L
No EPA limit set
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2019
1/1 SYR4
Di(2-ethylhexyl) Phthalate
27 µg/L 450%
of the EPA limit, at the 95th percentile of samples — 6 µg/L
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2019
1/1 SYR4
Bromodichloromethane
17.725 µg/L
No EPA limit set
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2019
1/1 SYR4
Lead
15.82 µg/L 105%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2017
1/1 SYR4
Dibromochloromethane
9.85 µg/L
No EPA limit set
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2019
1/1 SYR4
Trichloroacetic Acid
8.95 µg/L
No EPA limit set
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2019
1/1 SYR4
Dibromoacetic Acid
5.11 µg/L
No EPA limit set
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2019
1/1 SYR4
Bromoform
3.84 µg/L
No EPA limit set
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2019
1/1 SYR4
Monochloroacetic Acid
3.2 µg/L
No EPA limit set
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2019
1/1 SYR4
Atrazine
0.3400 µg/L 11%
of the EPA limit 3 µg/L
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2019
1/1 SYR4
Simazine
0.1660 µg/L 4.2%
of the EPA limit 4 µg/L
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2019
1/1 SYR4
Hexachlorocyclopentadiene
0.1300 µg/L 0.3%
of the EPA limit 50 µg/L
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 people · 2019
1/1 SYR4
Lead
0.0037 mg/L 24%
of the EPA limit 0.0150 mg/L
Main supplier: HARRIS COUNTY WCID 50 EL LAGO · 3,924 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 El Lago

SupplierPopulation served
HARRIS COUNTY WCID 50 EL LAGO 3,924

Frequently asked questions about El Lago tap water

Is El Lago tap water safe to drink?

EPA testing detected 22 contaminants in the water serving El Lago. 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 El Lago?

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

What contaminants are in El Lago's water?

The contaminants EPA monitoring detected in El Lago include Nitrate-Nitrite, Copper, Nitrate, Fluoride, Nitrite. 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.