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Tap water quality report

Marion, TX

EPA monitoring detected 25 contaminants across the 2 water suppliers serving Marion. 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.

2
water suppliers
54,468
people served
25
contaminants found
Texas rankings Lead in Texas PFAS in Texas

What was found in Marion'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
2190 µg/L 22%
of the EPA limit 10000 µg/L
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
2/2 SYR4
Nitrate-Nitrite
2082 µg/L 21%
of the EPA limit 10000 µg/L
Main supplier: GREEN VALLEY SUD · 52,497 people · 2015
2/2 SYR4
Fluoride
729 µg/L 18%
of the EPA limit 4000 µg/L
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
2/2 SYR4
Copper
280 µg/L 22%
of the EPA limit 1300 µg/L
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
Highest in the city: 287.69999999999993 µg/L — CITY OF MARION · 1,971 people · 2019
2/2 SYR4
TTHM
23.950000000000003 µg/L 30%
of the EPA limit 80 µg/L
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
Highest in the city: 83.21999999999989 µg/L — CITY OF MARION · 1,971 people · 2019
2/2 SYR4
Barium
41.18 µg/L 2.1%
of the EPA limit 2000 µg/L
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
Highest in the city: 50.074999999999996 µg/L — CITY OF MARION · 1,971 people · 2018
2/2 SYR4
Lithium
41 µg/L
No EPA limit set
Main supplier: GREEN VALLEY SUD · 52,497 people · 2023
1/2 UCMR-5
Total Haloacetic Acids (HAA5)
19.62999999999999 µg/L 33%
of the EPA limit 60 µg/L
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
Highest in the city: 34.139999999999986 µg/L — CITY OF MARION · 1,971 people · 2019
2/2 SYR4
Chloroform
11.499999999999998 µg/L
No EPA limit set
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
Highest in the city: 31.299999999999997 µg/L — CITY OF MARION · 1,971 people · 2019
2/2 SYR4
Bromodichloromethane
7.579999999999998 µg/L
No EPA limit set
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
Highest in the city: 28.03499999999999 µg/L — CITY OF MARION · 1,971 people · 2019
2/2 SYR4
Dibromochloromethane
8.66999999999997 µg/L
No EPA limit set
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
Highest in the city: 20.224999999999998 µg/L — CITY OF MARION · 1,971 people · 2019
2/2 SYR4
Dichloroacetic Acid
13.039999999999996 µg/L
No EPA limit set
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
Highest in the city: 18.98 µg/L — CITY OF MARION · 1,971 people · 2019
2/2 SYR4
Monochloroacetic Acid
7.4449999999999985 µg/L
No EPA limit set
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
Highest in the city: 9.324999999999998 µg/L — CITY OF MARION · 1,971 people · 2019
2/2 SYR4
Bromoform
5.644999999999996 µg/L
No EPA limit set
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
Highest in the city: 9.104999999999997 µg/L — CITY OF MARION · 1,971 people · 2019
2/2 SYR4
Monobromoacetic Acid
8.204999999999998 µg/L
No EPA limit set
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
2/2 SYR4
Dibromoacetic Acid
5.244999999999999 µg/L
No EPA limit set
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
Highest in the city: 8.159999999999998 µg/L — CITY OF MARION · 1,971 people · 2019
2/2 SYR4
Xylenes, Total
7.799999999999997 µg/L 0.1%
of the EPA limit 10000 µg/L
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
1/2 SYR4
Lead
6.385 µg/L 43%
of the EPA limit 15 µg/L
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
2/2 SYR4
Trichloroacetic Acid
4.855000000000003 µg/L
No EPA limit set
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
Highest in the city: 6.2299999999999995 µg/L — CITY OF MARION · 1,971 people · 2019
2/2 SYR4
Combined Radium (-226 And -228)
1.5 pCi/L 30%
of the EPA limit 5 pCi/L
Highest in the city: CITY OF MARION · 1,971 people · 2015
1/2 SYR4
Dalapon
1.2 µg/L 0.6%
of the EPA limit 200 µg/L
Highest in the city: CITY OF MARION · 1,971 people · 2019
1/2 SYR4
Ethylbenzene
1.16 µg/L 0.2%
of the EPA limit 700 µg/L
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
1/2 SYR4
Di(2-ethylhexyl) Phthalate
0.9200 µg/L 15%
of the EPA limit 6 µg/L
Main supplier: GREEN VALLEY SUD · 52,497 people · 2019
1/2 SYR4
Lead
0.0018 mg/L 12%
of the EPA limit 0.0150 mg/L
Main supplier: GREEN VALLEY SUD · 52,497 people · 2025
Highest in the city: 0.0050 mg/L — CITY OF MARION · 1,971 people · 2025
2/2 LCR
Pfpea
0.0049 µg/L
No EPA limit set
Main supplier: GREEN VALLEY SUD · 52,497 people · 2023
1/2 UCMR-5
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 Marion

SupplierPopulation served
GREEN VALLEY SUD 52,497
CITY OF MARION 1,971

Frequently asked questions about Marion tap water

Is Marion tap water safe to drink?

EPA testing detected 25 contaminants in the water serving Marion. 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 Marion?

2 public water suppliers report drinking-water monitoring for Marion, Texas to the EPA. Each is listed above with its population served.

What contaminants are in Marion's water?

The contaminants EPA monitoring detected in Marion include Nitrate, Nitrate-Nitrite, Fluoride, Copper, TTHM. 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.