What was found in Crosby'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 | 1660 µg/L 17% of the EPA limit 10000 µg/L Main supplier: CROSBY MUD · 5,130 people · 2019 | 9/12 | SYR4 |
| Fluoride | 496.5 µg/L 12% of the EPA limit 4000 µg/L Main supplier: CROSBY MUD · 5,130 people · 2019
Highest in the city: 768 µg/L — HARRIS COUNTY MUD 50 · 4,743 people · 2018 | 11/12 | SYR4 |
| Nitrate-Nitrite | 590 µg/L 5.9% of the EPA limit 10000 µg/L Main supplier: CROSBY MUD · 5,130 people · 2013 | 7/12 | SYR4 |
| Copper | 391.4 µg/L 30% of the EPA limit 1300 µg/L Main supplier: CROSBY MUD · 5,130 people · 2019
Highest in the city: 434.85 µg/L — HARRIS COUNTY WCID 70 · 2,112 people · 2019 | 11/12 | SYR4 |
| Barium | 105.4 µg/L 5.3% of the EPA limit 2000 µg/L Main supplier: CROSBY MUD · 5,130 people · 2019
Highest in the city: 216.4 µg/L — SHELDON ROAD MUD · 1,412 people · 2018 | 11/12 | SYR4 |
| Cyanide | 112.5 µg/L 56% of the EPA limit 200 µg/L Main supplier: CROSBY MUD · 5,130 people · 2019 | 1/12 | SYR4 |
| Total Haloacetic Acids (HAA5) | 37.115 µg/L 62% of the EPA limit 60 µg/L Main supplier: CROSBY MUD · 5,130 people · 2019 | 8/12 | SYR4 |
| TTHM | 27.725 µg/L 35% of the EPA limit 80 µg/L Main supplier: CROSBY MUD · 5,130 people · 2019
Highest in the city: 35.29 µg/L — APACHELAND MOBILE HOME SUBDIVISION · 207 people · 2019 | 11/12 | SYR4 |
| Nitrite | 29.5 µg/L 2.9% of the EPA limit 1000 µg/L Highest in the city: NORTHWEST HARRIS COUNTY MUD 24 · 1,257 people · 2019 | 1/12 | SYR4 |
| Dichloroacetic Acid | 27.46 µg/L No EPA limit set Main supplier: CROSBY MUD · 5,130 people · 2019 | 6/12 | SYR4 |
| Chloroform | 23.175 µg/L No EPA limit set Main supplier: CROSBY MUD · 5,130 people · 2019 | 9/12 | SYR4 |
| Lead | 4.3445 µg/L 29% of the EPA limit 15 µg/L Main supplier: CROSBY MUD · 5,130 people · 2019
Highest in the city: 14.75 µg/L — CANAL TERRACE SUBDIVISION · 480 people · 2019 | 10/12 | SYR4 |
| Dibromochloromethane | 2.055 µg/L No EPA limit set Main supplier: CROSBY MUD · 5,130 people · 2019
Highest in the city: 13.185 µg/L — CANAL TERRACE SUBDIVISION · 480 people · 2019 | 11/12 | SYR4 |
| Lithium | 11.6 µg/L No EPA limit set Highest in the city: HARRIS COUNTY MUD 50 · 4,743 people · 2023 | 1/12 | UCMR-5 |
| Bromodichloromethane | 6.49 µg/L No EPA limit set Main supplier: CROSBY MUD · 5,130 people · 2019
Highest in the city: 11.19 µg/L — APACHELAND MOBILE HOME SUBDIVISION · 207 people · 2019 | 10/12 | SYR4 |
| Trichloroacetic Acid | 8.37 µg/L No EPA limit set Main supplier: CROSBY MUD · 5,130 people · 2019 | 6/12 | SYR4 |
| Bromoform | 8.19 µg/L No EPA limit set Highest in the city: LORI HEIGHTS MOBILE HOME SUBDIVISION · 111 people · 2019 | 8/12 | SYR4 |
| Monochloroacetic Acid | 7.7 µg/L No EPA limit set Main supplier: CROSBY MUD · 5,130 people · 2019 | 2/12 | SYR4 |
| Arsenic | 2.6 µg/L 26% of the EPA limit 10 µg/L Main supplier: CROSBY MUD · 5,130 people · 2019
Highest in the city: 6.43 µg/L — HARRIS COUNTY WCID 70 · 2,112 people · 2019 | 5/12 | SYR4 |
| Xylenes, Total | 5.67 µg/L 0.1% of the EPA limit 10000 µg/L Highest in the city: HARRIS COUNTY MUD 50 · 4,743 people · 2019 | 2/12 | SYR4 |
| Selenium | 4.1 µg/L 8.2% of the EPA limit 50 µg/L Highest in the city: HARRIS COUNTY WCID 70 · 2,112 people · 2019 | 1/12 | SYR4 |
| Dibromoacetic Acid | 1.34 µg/L No EPA limit set Main supplier: CROSBY MUD · 5,130 people · 2019
Highest in the city: 3.59 µg/L — HARRIS COUNTY MUD 50 · 4,743 people · 2019 | 7/12 | SYR4 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: CROSBY MUD · 5,130 people · 2016
Highest in the city: 3.1 pCi/L — HUFFMAN HOLLOW APARTMENTS · 234 people · 2015 | 7/12 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.1 pCi/L 21% of the EPA limit 15 pCi/L Highest in the city: HUFFMAN HOLLOW APARTMENTS · 234 people · 2015 | 1/12 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.3 µg/L 22% of the EPA limit 6 µg/L Highest in the city: SHELDON ROAD MUD · 1,412 people · 2019 | 2/12 | SYR4 |
| Ethylbenzene | 1.1 µg/L 0.2% of the EPA limit 700 µg/L Highest in the city: HARRIS COUNTY MUD 50 · 4,743 people · 2019 | 1/12 | SYR4 |
| Dichloromethane | 0.7000 µg/L 14% of the EPA limit 5 µg/L Highest in the city: SHELDON ROAD MUD · 1,412 people · 2019 | 1/12 | SYR4 |
| Atrazine | 0.3120 µg/L 10% of the EPA limit 3 µg/L Main supplier: CROSBY MUD · 5,130 people · 2019 | 2/12 | SYR4 |
| Simazine | 0.2065 µg/L 5.2% of the EPA limit 4 µg/L Main supplier: CROSBY MUD · 5,130 people · 2019 | 1/12 | SYR4 |
| Lead | 0.00084 mg/L 5.6% of the EPA limit 0.0150 mg/L Main supplier: CROSBY MUD · 5,130 people · 2026
Highest in the city: 0.0045 mg/L — CHAPMANS MHP · 195 people · 2024 | 12/12 | 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 Crosby
| Supplier | Population served |
|---|---|
| CROSBY MUD | 5,130 |
| HARRIS COUNTY MUD 50 | 4,743 |
| HARRIS COUNTY WCID 70 | 2,112 |
| SHELDON ROAD MUD | 1,412 |
| NORTHWEST HARRIS COUNTY MUD 24 | 1,257 |
| CANAL TERRACE SUBDIVISION | 480 |
| HUFFMAN HOLLOW APARTMENTS | 234 |
| APACHELAND MOBILE HOME SUBDIVISION | 207 |
| CHAPMANS MHP | 195 |
| LORI HEIGHTS MOBILE HOME SUBDIVISION | 111 |
| CAROL NORRA MOBILE HOME PARK | 63 |
| FOUR SEASONS MHP | 54 |
Frequently asked questions about Crosby tap water
Is Crosby tap water safe to drink?
EPA testing detected 30 contaminants in the water serving Crosby. 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 Crosby?
12 public water suppliers report drinking-water monitoring for Crosby, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Crosby's water?
The contaminants EPA monitoring detected in Crosby include Nitrate, Fluoride, Nitrate-Nitrite, 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.