Carol Norra Mobile Home Park

What EPA’s and Texas’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.

Serves: 63 people
Connections: 21
Water source: Groundwater
Based in: Crosby, TX
County: Harris
Owner: Private

The ZIP code it serves

77532

The short answer

Nothing in EPA’s and Texas’s records for this utility is above a health goal. That covers nitrate, arsenic and other regulated chemicals, plus lead and copper, not everything. 1 health-based violation since 2016.

What was found

Total trihalomethanes (TTHM), arsenic, chromium (total), haloacetic acids (HAA5), nitrate and uranium: Texas’s own results, samples taken from Nov. 10, 2020 to Sept. 23, 2021.

Below EPA’s limits1

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

3.6ppb

Highest yearly average, 2021

Averaged by year, the highest was 3.6 ppb, in 2021, below EPA’s legal limit of 80 ppb. That is the only year on file.

What handles it

NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”

6 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.

Arsenic
Chromium (total)
Haloacetic acids (HAA5)
Lead
Nitrate
Uranium

Violations since 2016

Contaminant or rule	Type	Period	Measured	Status
Lead and Copper Rule Revisions	The required inventory of lead service lines was not completed or submitted on time.EPA: LSL Inventory	Oct. 17, 2024	—	Unaddressed
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 205 monitoring or reporting violations not shown.

What this report can’t tell you

Everything else. Total trihalomethanes (TTHM), arsenic, chromium (total), haloacetic acids (HAA5), nitrate and uranium results here are Texas’s own from 2020 on, with EPA’s national file for 2012 to 2019. Carol Norra Mobile Home Park’s own annual report, which it must send you every year, has the contaminants this page does not show.
Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.
What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.
Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; Texas’s results run from Nov. 10, 2020 to Sept. 23, 2021.

Testing your own tap

Carol Norra Mobile Home Park’s results are for the water it sends out. What your own service line, solder and fixtures add shows up only in a test of your tap, by a lab Texas certifies.

The 3 labs Texas certifies closest to the area Carol Norra Mobile Home Park serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

A & B Environmental Services, Inc.
Houston, TX · about 17 miles
Certified for bacteria, lead and copper
(713) 453-6060
City of Houston Health Department, Bureau of Laboratory Services
Houston, TX · about 26 miles
Certified for bacteria
(832) 393-3939
Water Utility Services, Inc.
Spring, TX · about 26 miles
Certified for bacteria
(281) 290-0704

Texas Well Owner Network, Texas A&M AgriLife Extension: Well Informed screening events, where well owners bring in water samples to be screened for common contaminants, followed by an hour-long session explaining the results. Upcoming events are on the network's calendar. Trainings, Texas Well Owner Network.

All 80 certified labs for Texas