What was found in Cypress'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 |
|---|---|---|---|
| Nitrate | 656.5 µg/L 6.6% of the EPA limit 10000 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019
Highest in the city: 2640 µg/L — CORNERSTONE MOBILE HOME COMMUNITY · 81 people · 2019 | 25/31 | SYR4 |
| Nitrate-Nitrite | 682.5 µg/L 6.8% of the EPA limit 10000 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2015
Highest in the city: 2497 µg/L — CORNERSTONE MOBILE HOME COMMUNITY · 81 people · 2015 | 21/31 | SYR4 |
| Fluoride | 159 µg/L 4% of the EPA limit 4000 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2017
Highest in the city: 910 µg/L — LAZY ACRES MOBILE HOME PARK · 75 people · 2019 | 29/31 | SYR4 |
| Copper | 261.2 µg/L 20% of the EPA limit 1300 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2018
Highest in the city: 744.8 µg/L — HARRIS COUNTY MUD 248 · 2,076 people · 2019 | 31/31 | SYR4 |
| Barium | 325.7 µg/L 16% of the EPA limit 2000 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019
Highest in the city: 425.2 µg/L — MAPLE LEAF MOBILE HOME SUBDIVISION · 861 people · 2019 | 29/31 | SYR4 |
| Xylenes, Total | 0.7000 µg/L 0% of the EPA limit 10000 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019
Highest in the city: 132 µg/L — BEAUMONT PLACE · 1,917 people · 2019 | 5/31 | SYR4 |
| Cyanide | 130 µg/L 65% of the EPA limit 200 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2017 | 2/31 | SYR4 |
| TTHM | 15.6 µg/L 20% of the EPA limit 80 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019
Highest in the city: 48.83 µg/L — LAZY ACRES MOBILE HOME PARK · 75 people · 2019 | 13/31 | SYR4 |
| Lead | 26.14 µg/L 174% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2018
Highest in the city: 32.14 µg/L — RESERVOIR ACRES SUBDIVISION · 738 people · 2017 | 30/31 | SYR4 |
| Total Haloacetic Acids (HAA5) | 29.225 µg/L 49% of the EPA limit 60 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019
Highest in the city: 31.7 µg/L — GREENGATE ACRES SUBDIVISION · 318 people · 2019 | 13/31 | SYR4 |
| Chloroform | 16.45 µg/L No EPA limit set Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019
Highest in the city: 24.065 µg/L — BEAUMONT PLACE · 1,917 people · 2019 | 12/31 | SYR4 |
| Dichloroacetic Acid | 22.985 µg/L No EPA limit set Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019 | 10/31 | SYR4 |
| Arsenic | 3.35 µg/L 34% of the EPA limit 10 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019
Highest in the city: 21.98 µg/L — HARRIS COUNTY MUD 58 · 2,289 people · 2017 | 19/31 | SYR4 |
| Dibromochloromethane | 0.6000 µg/L No EPA limit set Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019
Highest in the city: 20.725 µg/L — LAZY ACRES MOBILE HOME PARK · 75 people · 2019 | 16/31 | SYR4 |
| Nitrite | 20 µg/L 2% of the EPA limit 1000 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2015 | 1/31 | SYR4 |
| Bromodichloromethane | 2.24 µg/L No EPA limit set Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019
Highest in the city: 18.13 µg/L — BEAUMONT PLACE · 1,917 people · 2019 | 14/31 | SYR4 |
| Combined Uranium | 1.6 µg/L 5.3% of the EPA limit 30 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2016
Highest in the city: 16.2 µg/L — NITSCH & SON UTILITY · 2,190 people · 2019 | 11/31 | SYR4 |
| Selenium | 9.4 µg/L 19% of the EPA limit 50 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019
Highest in the city: 15.485 µg/L — NITSCH & SON UTILITY · 2,190 people · 2018 | 15/31 | SYR4 |
| Gross Beta Particle Activity | 10.5 pCi/L No EPA limit set Highest in the city: NITSCH & SON UTILITY · 2,190 people · 2019 | 8/31 | SYR4 |
| Chromium | 10.3 µg/L 10% of the EPA limit 100 µg/L Highest in the city: MAPLE LEAF MOBILE HOME SUBDIVISION · 861 people · 2019 | 1/31 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.6 pCi/L 24% of the EPA limit 15 pCi/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2016
Highest in the city: 9.8 pCi/L — NITSCH & SON UTILITY · 2,190 people · 2019 | 17/31 | SYR4 |
| Ethylbenzene | 9.7 µg/L 1.4% of the EPA limit 700 µg/L Highest in the city: BEAUMONT PLACE · 1,917 people · 2019 | 2/31 | SYR4 |
| Trichloroacetic Acid | 4.165 µg/L No EPA limit set Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019
Highest in the city: 9.5 µg/L — TALL CEDARS MOBILE HOME SUBDIVISION · 156 people · 2019 | 8/31 | SYR4 |
| Bromoform | 9.375 µg/L No EPA limit set Highest in the city: LAZY ACRES MOBILE HOME PARK · 75 people · 2019 | 15/31 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.8200 µg/L 14% of the EPA limit 6 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019
Highest in the city: 6.2 µg/L — NITSCH & SON UTILITY · 2,190 people · 2019 | 3/31 | SYR4 |
| Monochloroacetic Acid | 3.42 µg/L No EPA limit set Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019
Highest in the city: 5.2 µg/L — HIGHLAND MOBILE HOME SUBDIVISION · 96 people · 2019 | 3/31 | SYR4 |
| Dibromoacetic Acid | 4.78 µg/L No EPA limit set Highest in the city: LAZY ACRES MOBILE HOME PARK · 75 people · 2019 | 9/31 | SYR4 |
| Combined Radium (-226 And -228) | 3.875 pCi/L 78% of the EPA limit 5 pCi/L Highest in the city: GREENGATE ACRES SUBDIVISION · 318 people · 2018 | 21/31 | SYR4 |
| Toluene | 3.6 µg/L 0.4% of the EPA limit 1000 µg/L Highest in the city: GRANTWOODS WATER SUPPLY CORPORATION · 78 people · 2019 | 1/31 | SYR4 |
| Atrazine | 0.6230 µg/L 21% of the EPA limit 3 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019 | 1/31 | SYR4 |
| 2,4-D | 0.1000 µg/L 0.1% of the EPA limit 70 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019 | 1/31 | SYR4 |
| Simazine | 0.0900 µg/L 2.3% of the EPA limit 4 µg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2019 | 1/31 | SYR4 |
| Pfba | 0.0059 µg/L No EPA limit set Main supplier: FAULKEY GULLY MUD · 8,907 people · 2025 | 1/31 | UCMR-5 |
| Lead | 0.0015 mg/L 10% of the EPA limit 0.0150 mg/L Main supplier: FAULKEY GULLY MUD · 8,907 people · 2024
Highest in the city: 0.0054 mg/L — WAYNEWOOD PLACE CIVIC CLUB · 147 people · 2024 | 31/31 | 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 Cypress
Frequently asked questions about Cypress tap water
Is Cypress tap water safe to drink?
EPA testing detected 34 contaminants in the water serving Cypress. 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 Cypress?
31 public water suppliers report drinking-water monitoring for Cypress, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Cypress's water?
The contaminants EPA monitoring detected in Cypress include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. 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.