What was found in Riverside'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.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 760 µg/L 19% of the EPA limit 4000 µg/L Main supplier: RIVERSIDE SUD · 6,246 people · 2017
Highest in the city: 1159 µg/L — LAKE LIVINGSTON HEIGHTS WSC · 150 people · 2019 | 3/3 | SYR4 |
| Copper | 258.8 µg/L 20% of the EPA limit 1300 µg/L Main supplier: RIVERSIDE SUD · 6,246 people · 2017
Highest in the city: 262.5 µg/L — LAKE LIVINGSTON HEIGHTS WSC · 150 people · 2018 | 3/3 | SYR4 |
| TTHM | 129 µg/L 161% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: RIVERSIDE SUD · 6,246 people · 2019 | 3/3 | SYR4 |
| Lithium | 60.3 µg/L No EPA limit set Main supplier: RIVERSIDE SUD · 6,246 people · 2025 | 1/3 | UCMR-5 |
| Nitrate | 50 µg/L 0.5% of the EPA limit 10000 µg/L Main supplier: RIVERSIDE SUD · 6,246 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 49.22 µg/L No EPA limit set Main supplier: RIVERSIDE SUD · 6,246 people · 2019 | 3/3 | SYR4 |
| Nitrate-Nitrite | 40 µg/L 0.4% of the EPA limit 10000 µg/L Main supplier: RIVERSIDE SUD · 6,246 people · 2015
Highest in the city: 49 µg/L — LAKE LIVINGSTON HEIGHTS WSC · 150 people · 2015 | 3/3 | SYR4 |
| Bromoform | 17.98 µg/L No EPA limit set Main supplier: RIVERSIDE SUD · 6,246 people · 2019
Highest in the city: 40.485 µg/L — LAKE LIVINGSTON HEIGHTS WSC · 150 people · 2019 | 3/3 | SYR4 |
| Cyanide | 40 µg/L 20% of the EPA limit 200 µg/L Main supplier: RIVERSIDE SUD · 6,246 people · 2017 | 1/3 | SYR4 |
| Bromodichloromethane | 36.98 µg/L No EPA limit set Main supplier: RIVERSIDE SUD · 6,246 people · 2019 | 3/3 | SYR4 |
| Barium | 35.56 µg/L 1.8% of the EPA limit 2000 µg/L Main supplier: RIVERSIDE SUD · 6,246 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 31.51 µg/L 53% of the EPA limit 60 µg/L Main supplier: RIVERSIDE SUD · 6,246 people · 2019 | 3/3 | SYR4 |
| Chloroform | 24.995 µg/L No EPA limit set Main supplier: RIVERSIDE SUD · 6,246 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 13.795 µg/L No EPA limit set Main supplier: RIVERSIDE SUD · 6,246 people · 2019 | 2/3 | SYR4 |
| Dichloroacetic Acid | 12.275 µg/L No EPA limit set Main supplier: RIVERSIDE SUD · 6,246 people · 2019 | 3/3 | SYR4 |
| Lead | 12.2 µg/L 81% of the EPA limit 15 µg/L Main supplier: RIVERSIDE SUD · 6,246 people · 2017 | 3/3 | SYR4 |
| Dibromoacetic Acid | 10.145 µg/L No EPA limit set Main supplier: RIVERSIDE SUD · 6,246 people · 2019
Highest in the city: 11.045 µg/L — LAKE LIVINGSTON HEIGHTS WSC · 150 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 10.89 µg/L No EPA limit set Main supplier: RIVERSIDE SUD · 6,246 people · 2019 | 2/3 | SYR4 |
| Gross Beta Particle Activity | 7.055 pCi/L No EPA limit set Main supplier: RIVERSIDE SUD · 6,246 people · 2016 | 3/3 | SYR4 |
| Selenium | 4.1 µg/L 8.2% of the EPA limit 50 µg/L Highest in the city: LAKE LIVINGSTON HEIGHTS WSC · 150 people · 2018 | 1/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.4 pCi/L 23% of the EPA limit 15 pCi/L Highest in the city: LAKE LIVINGSTON HEIGHTS WSC · 150 people · 2018 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: RIVERSIDE SUD · 6,246 people · 2016
Highest in the city: 3.28 pCi/L — LAKE LIVINGSTON HEIGHTS WSC · 150 people · 2018 | 3/3 | SYR4 |
| Xylenes, Total | 2.9 µg/L 0% of the EPA limit 10000 µg/L Main supplier: RIVERSIDE SUD · 6,246 people · 2019 | 2/3 | SYR4 |
| Monochloroacetic Acid | 2.69 µg/L No EPA limit set Main supplier: RIVERSIDE SUD · 6,246 people · 2019 | 1/3 | SYR4 |
| Dalapon | 1.74 µg/L 0.9% of the EPA limit 200 µg/L Main supplier: RIVERSIDE SUD · 6,246 people · 2019 | 1/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.2 µg/L 20% of the EPA limit 6 µg/L Highest in the city: LAKE LIVINGSTON HEIGHTS WSC · 150 people · 2019 | 1/3 | SYR4 |
| Ethylbenzene | 0.5000 µg/L 0.1% of the EPA limit 700 µg/L Main supplier: RIVERSIDE SUD · 6,246 people · 2019
Highest in the city: 0.6000 µg/L — LAKE LIVINGSTON HEIGHTS WSC · 150 people · 2019 | 2/3 | SYR4 |
| Carbon Tetrachloride | 0.5000 µg/L 10% of the EPA limit 5 µg/L Main supplier: RIVERSIDE SUD · 6,246 people · 2019 | 1/3 | SYR4 |
| Toluene | 0.5000 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the city: SHOREWOOD FOREST WATER SYSTEM · 312 people · 2019 | 1/3 | SYR4 |
| Pfpea | 0.0066 µg/L No EPA limit set Main supplier: RIVERSIDE SUD · 6,246 people · 2025 | 1/3 | UCMR-5 |
| PFBS | 0.0033 µg/L No EPA limit set Main supplier: RIVERSIDE SUD · 6,246 people · 2025 | 1/3 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: RIVERSIDE SUD · 6,246 people · 2024
Highest in the city: 0.0020 mg/L — SHOREWOOD FOREST WATER SYSTEM · 312 people · 2024 | 3/3 | 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 Riverside
| Supplier | Population served |
|---|---|
| RIVERSIDE SUD | 6,246 |
| SHOREWOOD FOREST WATER SYSTEM | 312 |
| LAKE LIVINGSTON HEIGHTS WSC | 150 |
Frequently asked questions about Riverside tap water
Is Riverside tap water safe to drink?
EPA testing detected 32 contaminants in the water serving Riverside. 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 Riverside?
3 public water suppliers report drinking-water monitoring for Riverside, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Riverside's water?
The contaminants EPA monitoring detected in Riverside include Fluoride, Copper, TTHM, Lithium, Nitrate. 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.