Arrow Ridge Shores, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 0.62 ppb (monitoring period 2022-2024). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
About Arrow Ridge Shores
Arrow Ridge Shores serves about 140 people through 52 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Camden County, Missouri. EPA system ID: MO3031133; phone on file: 573-964-6956. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Arrow Ridge Shores is 0.74 ppb across 8 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0.62 ppb |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2019 | 0.59 ppb |
| 2018 | 0.59 ppb |
| 2018 | 0.59 ppb |
| 2016 | 0.74 ppb |
Against other Missouri systems
Of the 1,674 Missouri systems with a lead result, the median latest reading is 1.04 ppb; 2 are over 15 ppb right now and 74 have gone over at some point. Arrow Ridge Shores's 0.62 ppb sits at the 44th percentile in Missouri and the 45th nationally (higher means more lead).
Other water systems in Camden County
61 other systems share Camden County; 38 of them have a higher latest lead result than Arrow Ridge Shores. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Camden County Pwsd 4 Horseshoe Bend | 7,912 | 1.71 ppb |
| Camdenton Pws | 3,960 | 1.86 ppb |
| Osage Beach East Pws | 2,611 | 2.26 ppb |
| Camden County Pwsd #4 Shawnee Bend | 2,065 | 7.62 ppb |
| Osage Beach West Pws | 1,700 | 2.92 ppb |
| Camden County Pwsd 3 | 1,650 | 4.62 ppb |
| Camden County Pwsd 2 | 1,600 | 0 (not detected) |
| Camden County Pwsd 1 | 1,300 | 1.83 ppb |
| Encounter Cove Camp & Conference Center | 1,052 | 0 (not detected) |
| Sweet Pea Pws | 980 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Osage Beach, MO may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Arrow Ridge Shores whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. What a 90th-percentile result does and does not tell you: how to read a lead result. Systems that went over once often dip back under; here is what that means.