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Tap water quality report

Oak Hills Ranch Water

EPA monitoring tested this supplier for 77 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

77
contaminants tested
17
detected
624
people served
4
health-based violations
Missouri rankingsLead in MissouriPFAS in Missouri
Water source
Ground water
Ownership
Private
Counties served
Guadalupe

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

4
health-based violations
1,054
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2020-07-02
TT Health-based Resolved 2020-07-02
TT Health-based Resolved 2020-07-02
TT Health-based Resolved 2020-07-02
MR Monitoring Resolved 2025-04-01
MR Monitoring Resolved 2025-04-01
MR Monitoring Resolved 2025-01-01 → 2025-06-30
MR Monitoring Resolved 2025-01-01 → 2025-06-30
MR Monitoring Resolved 2025-01-01 → 2025-06-30
MON Monitoring Resolved 2024-09-01 → 2024-09-30

Other contaminants detected

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 this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
590 µg/L 5.9%
of the EPA limit 10000 µg/L
 14/14 SYR4 2012–2018
Copper
378.45 µg/L 29%
of the EPA limit 1300 µg/L
worst single sample: 643 µg/L
12/12 SYR4 2012–2017
Lead
0.0076 mg/L 51%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2025
Barium
77.68 µg/L 3.9%
of the EPA limit 2000 µg/L
worst single sample: 78.1 µg/L
3/3 SYR4 2012–2018
Lead
1.8 µg/L 12%
of the EPA limit 15 µg/L
worst single sample: 1.83 µg/L
3/12 SYR4 2012–2017
Bromoform
1.17 µg/L
No EPA limit set
worst single sample: 1.2 µg/L
2/10 SYR4 2014–2018
Dibromochloromethane
1.355 µg/L
No EPA limit set
worst single sample: 1.4 µg/L
2/10 SYR4 2014–2018
Nitrate-Nitrite
539 µg/L 5.4%
of the EPA limit 10000 µg/L
worst single sample: 540 µg/L
2/2 SYR4 2013–2014
Combined Radium (-226 And -228)
2.1 pCi/L 42%
of the EPA limit 5 pCi/L
 1/1 SYR4 2012
Dichloromethane
1 µg/L 20%
of the EPA limit 5 µg/L
 1/5 SYR4 2014–2018
Dibromoacetic Acid
1.3 µg/L
No EPA limit set
 1/5 SYR4 2016–2018
Fluoride
130 µg/L 3.3%
of the EPA limit 4000 µg/L
 1/3 SYR4 2012–2018
Gross Beta Particle Activity
6.6 pCi/L
No EPA limit set
 1/1 SYR4 2012
Monochloroacetic Acid
4.6 µg/L
No EPA limit set
 1/5 SYR4 2016–2018
Selenium
3 µg/L 6%
of the EPA limit 50 µg/L
 1/3 SYR4 2012–2018
TTHM
2.6 µg/L 3.3%
of the EPA limit 80 µg/L
 1/5 SYR4 2016–2018
Total Haloacetic Acids (HAA5)
5.9 µg/L 9.8%
of the EPA limit 60 µg/L
 1/5 SYR4 2016–2018
60 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WITTWER, CLARENCE
Phone
254-355-9124
Email
[email protected]

Frequently asked questions about Oak Hills Ranch Water

Is Oak Hills Ranch Water tap water safe to drink?

EPA monitoring detected 17 contaminants in Oak Hills Ranch Water's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Oak Hills Ranch Water's water?

EPA monitoring detected Nitrate, Copper, Lead, Barium, Lead, and others. The full list with the level and data source for each is above.

How many people does Oak Hills Ranch Water serve?

Oak Hills Ranch Water reports serving 624 people in Missouri, per its EPA record.

Has Oak Hills Ranch Water had any water quality violations?

The EPA has 1054 violations on file for Oak Hills Ranch Water, of which 4 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

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.